CN1332539A - Adaptive W-CDMA coherent reception method and receiver for third generation mobile communication - Google Patents

Abstract

Translated fromChinese

发明的方法是信号测量基础上的自适应相干接收方法。方法具体流程是主公共导频信道(适用于下行接收机)或者上行专用物理控制信道(Uplink DPCCH,适用于上行接收机)去除扰码和信道化码影响,做某一长度SF的积分,产生输出比特,测量其信噪比Eb/It。再使用上述输出比特与经过匹配滤波器后的业务信道比特做相关接收,测量相关接收后数据流中的残留频差Δf。根据上述两个测量结果Eb/It和Δf,自适应决定下一周期内主公共导频信道或者Uplink DPCCH的积分长度SF。基于本发明方法而设计的W－CDMA自适应相干接收机,包括可控积分长度的匹配滤波器,信噪比测量器,自适应算法控制器,时分开关,自适应刷新时钟,残留频差测量器,取共轭器,乘法器。本发明提出的W－CDMA自适应相干接收方法,提高解调信噪比,保证了移动台射频稳定度不高、移动台变速移动或无线信道非平稳特征显著的情况下解调信噪比的稳定性,同时没有增加解调用户数据的处理延时,从而提高了系统性能。The invented method is an adaptive coherent receiving method based on signal measurement. The specific process of the method is to remove the influence of the scrambling code and the channelization code on the main common pilot channel (applicable to the downlink receiver) or the uplink dedicated physical control channel (Uplink DPCCH, applicable to the uplink receiver), and integrate a certain length of SF to generate Output bits and measure the signal-to-noise ratio Eb/It. Then use the above output bits and the traffic channel bits after the matched filter to perform correlation reception, and measure the residual frequency difference Δf in the data stream after correlation reception. According to the above two measurement results Eb/It and Δf, the integral length SF of the main common pilot channel or Uplink DPCCH in the next period is adaptively determined. The W-CDMA adaptive coherent receiver designed based on the method of the present invention includes a matched filter with controllable integration length, a signal-to-noise ratio measurer, an adaptive algorithm controller, a time division switch, an adaptive refresh clock, and residual frequency difference measurement device, conjugator, multiplier. The W-CDMA self-adaptive coherent receiving method proposed by the present invention improves the demodulation signal-to-noise ratio, and ensures the demodulation signal-to-noise ratio under the condition that the radio frequency stability of the mobile station is not high, the mobile station moves at variable speed, or the wireless channel has significant non-stationary characteristics. stability without increasing the processing delay of demodulated user data, thereby improving system performance.

Description

Translated fromChinese

第三代移动通信W-CDMA自适应相干接收方法及接收机The third generation mobile communication W-CDMA adaptive coherent receiving method and receiver

(一)技术领域：(1) Technical field:

本发明属于第三代移动通信宽带码分多址(W-CDMA)技术领域，尤其设计第三代移动通信W-CDMA自适应相干接收方法及接收机。The invention belongs to the technical field of wideband code division multiple access (W-CDMA) of the third generation mobile communication, and especially designs a W-CDMA self-adaptive coherent receiving method and receiver of the third generation mobile communication.

(二)背景技术：(two) background technology:

宽带码分多址(W-CDMA)扩展频谱通信方式是目前正在实现的第三代移动通信系统之一。它除了具有传统码分多址系统的抗干扰和抗多径衰落，系统容量大等优异特性外，而且上行、下行都采用相干接收，对信道的适应能力更强，误码率进一步降低。但是，在W-CDMA系统中，只采用自动频率控制(AFC)不能够完全消除收发双方的频差不稳定、多普勒频移和信道随机相位干扰带来的影响，这三部分影响将在很大程度上影响高速率业务的误码率，需要采取W-CDMA自适应相干接收方法来克服这三种影响。The Wideband Code Division Multiple Access (W-CDMA) spread spectrum communication method is one of the third generation mobile communication systems being realized at present. In addition to the excellent characteristics of anti-jamming, anti-multipath fading and large system capacity of the traditional CDMA system, it also adopts coherent reception in uplink and downlink, which has stronger adaptability to channels and further reduces the bit error rate. However, in the W-CDMA system, only automatic frequency control (AFC) can not completely eliminate the influence of frequency difference instability, Doppler frequency shift and channel random phase interference between the transceiver and the receiver. To a large extent, it affects the bit error rate of high-speed services, and it is necessary to adopt a W-CDMA adaptive coherent receiving method to overcome these three effects.

传统的相干接收方法是将接收信号通过导频信道匹配滤波器进行解扩，得到导频信道信号，同时接收信号通过业务信道匹配滤波器进行解扩，得到业务比特流，两者的输出用于相干解调。这种相干接收方法采用了固定的结构，不能够适应移动台射频稳定度不高，移动台变速移动或无线信道非平稳特征显著的情况下的高速数率传输。The traditional coherent receiving method is to despread the received signal through a pilot channel matched filter to obtain a pilot channel signal, and at the same time despread the received signal through a traffic channel matched filter to obtain a service bit stream, and the outputs of the two are used for coherent demodulation. This coherent receiving method adopts a fixed structure, which cannot adapt to high-speed data rate transmission when the radio frequency stability of the mobile station is not high, the mobile station moves at variable speeds, or the wireless channel has significant non-stationary characteristics.

本发明的目的在于提供一种适用于第三代移动通信W-CDMA物理层体系结构的自适应相干接收方法及接收机。这种方法和接收机能够适应移动台射频稳定度不高，移动台变速移动或无线信道非平稳特征显著的情况下的高速数率传输。The purpose of the present invention is to provide an adaptive coherent receiving method and a receiver suitable for the third generation mobile communication W-CDMA physical layer architecture. The method and the receiver can adapt to the high data rate transmission under the condition that the radio frequency stability of the mobile station is not high, the mobile station moves at variable speed or the non-stationary characteristic of the wireless channel is obvious.

(三)发明内容：(3) Contents of the invention:

本发明的技术方案如下：Technical scheme of the present invention is as follows:

发明的方法是信号测量基础上的自适应相干接收。The invented method is adaptive coherent reception based on signal measurements.

本发明方法是主公共导频信道(适用于下行接收机)或者上行专用物理控制信道(Uplink DPCCH，适用于上行接收机)去除扰码和信道化码影响，做长度SF(取值在4—256之间)的积分，产生输出比特，测量其信噪比Eb/It。再使用上述输出比特与经过匹配滤波器后的业务信道比特做相关接收，测量相关接收后数据流中的残留频差Δf。根据上述两个测量结果Eb/It和Δf，自适应决定下一周期内主公共导频信道或者Upiink DPCCH的积分长度SF。The method of the present invention removes the influence of scrambling code and channelization code on the main common pilot channel (applicable to downlink receiver) or uplink dedicated physical control channel (Uplink DPCCH, applicable to uplink receiver), and makes length SF (value between 4- 256) to generate output bits whose signal-to-noise ratio Eb/It is measured. Then use the above output bits and the traffic channel bits after the matched filter to perform correlation reception, and measure the residual frequency difference Δf in the data stream after correlation reception. According to the above two measurement results Eb/It and Δf, adaptively determine the integration length SF of the main common pilot channel or Upink DPCCH in the next cycle.

Uplink DPCCH去除扰码和信道化码影响，做长度SFc(取值在4—256之间)的积分，产生输出比特，测量其信噪比Eb/It。再使用上述输出比特与经过匹配滤波器的Uplink DPDCH做相关接收，测量得到的相关接收后的数据流中残留频差Δf。根据Eb/It和Δf，自适应决定下一周期内Upiink DPCCH的积分长度SFc。Uplink DPCCH removes the influence of scrambling code and channelization code, performs integral of length SFc (value between 4-256), generates output bits, and measures its signal-to-noise ratio Eb/It. Then use the above output bits to perform correlation reception with the Uplink DPDCH that has passed the matched filter, and measure the residual frequency difference Δf in the data stream after correlation reception. According to Eb/It and Δf, the integral length SFc of Upink DPCCH in the next cycle is adaptively determined.

本发明方法所说门限的值可以是固定的，也可以自适应调整。The value of the threshold mentioned in the method of the present invention can be fixed, and can also be adjusted adaptively.

基于本发明方法而设计的W-CDMA自适应相干接收机，包括可控积分长度的匹配滤波器，信噪比测量器，自适应算法控制器，时分开关，自适应刷新时钟，残留频差测量器，取共轭器，乘法器。根据W-CDMA上、下行不同的物理层结构，下行自适应相干接收机与上行自适应相干接收机略有不同。The W-CDMA adaptive coherent receiver designed based on the method of the present invention includes a matched filter with controllable integration length, a signal-to-noise ratio measurer, an adaptive algorithm controller, a time division switch, an adaptive refresh clock, and residual frequency difference measurement device, conjugator, multiplier. According to the different physical layer structures of W-CDMA uplink and downlink, the downlink adaptive coherent receiver is slightly different from the uplink adaptive coherent receiver.

其中，下行自适应相干接收机结构如下，主公共导频信道可控积分长度的匹配滤波器的输入是移动台的基带接收信号，输出分两支，一支和信噪比测量器相连，另一支和取共轭器相连。信噪比测量器的输出与自适应算法控制器的输入相连。业务信道的匹配滤波器输入是移动台的基带接收信号，输出和乘法器的输入相连，此乘法器的另一输入与取共轭器的输出相连。乘法器的输出与时分开关相连。时分开关的输出分两支，一支输出下行专用物理控制信道(DownlinkDPCCH)到残留频差测量器，另一支输出下行专用物理数据信道(Downlink DPDCH)，即多比特用户数据流。残留频差测量器输出到自适应算法控制器。自适应算法控制器输出刷新的SFp到主公共导频信道可控积分长度的匹配滤波器。自适应刷新时钟输出三支，分别到信噪比测量器，残留频差测量器和自适应算法控制器。Among them, the structure of the downlink adaptive coherent receiver is as follows, the input of the matched filter with controllable integration length of the main common pilot channel is the baseband received signal of the mobile station, and the output is divided into two branches, one is connected with the signal-to-noise ratio measuring device, and the other is One is connected to the conjugator. The output of the signal-to-noise ratio measurer is connected to the input of the adaptive algorithm controller. The input of the matched filter of the traffic channel is the baseband received signal of the mobile station, the output is connected with the input of the multiplier, and the other input of the multiplier is connected with the output of the conjugator. The output of the multiplier is connected with the time division switch. The output of the time division switch is divided into two branches, one outputs the downlink dedicated physical control channel (DownlinkDPCCH) to the residual frequency difference measuring device, and the other outputs the downlink dedicated physical data channel (Downlink DPDCH), that is, the multi-bit user data stream. The residual frequency difference measurer is output to the adaptive algorithm controller. The adaptive algorithm controller outputs the refreshed SFp to the matched filter with controllable integration length of the main common pilot channel. Three adaptive refresh clock outputs are sent to the signal-to-noise ratio measurer, the residual frequency difference measurer and the adaptive algorithm controller respectively.

上行自适应相干接收机的结构与下行基本相似，结构如下，Uplink DPCCH可控积分长度的匹配滤波器的输入是基站的基带接收信号，输出分两支，一支和信噪比测量器相连，另一支和取共轭器相连。信噪比测量器的输出与自适应算法控制器的输入相连。上行专用物理数据信道(Uplink DPDCH)的匹配滤波器输入是移动台的基带接收信号，输出和乘法器的输入相连，此乘法器的另一输入与取共轭器的输出相连。乘法器的输出与残留频差测量器的输入相连，并同时输出多比特用户数据流。残留频差测量器输出到自适应算法控制器。自适应算法控制器输出刷新的SFc到Uplink DPCCH可控积分长度的匹配滤波器。自适应刷新时钟输出三支，分别到信噪比测量器，残留频差测量器和自适应算法控制器。The structure of the uplink adaptive coherent receiver is basically similar to that of the downlink. The structure is as follows. The input of the matched filter of the Uplink DPCCH controllable integration length is the baseband receiving signal of the base station, and the output is divided into two branches, one of which is connected to the SNR measuring device. The other branch is connected to the conjugater. The output of the signal-to-noise ratio measurer is connected to the input of the adaptive algorithm controller. The matched filter input of the uplink dedicated physical data channel (Uplink DPDCH) is the baseband received signal of the mobile station, and the output is connected to the input of the multiplier, and the other input of the multiplier is connected to the output of the conjugator. The output of the multiplier is connected to the input of the residual frequency difference measurer, and simultaneously outputs a multi-bit user data stream. The residual frequency difference measurer is output to the adaptive algorithm controller. The adaptive algorithm controller outputs the refreshed SFc to the matched filter of the Uplink DPCCH controllable integration length. Three adaptive refresh clock outputs are sent to the signal-to-noise ratio measurer, the residual frequency difference measurer and the adaptive algorithm controller respectively.

本发明的有益效果如下：The beneficial effects of the present invention are as follows:

本发明提出的W-CDMA自适应相干接收方法，提高解调信噪比，保证了移动台射频稳定度不高，移动台变速移动或无线信道非平稳特征显著的情况下解调信噪比的稳定性，同时没有增加解调用户数据的处理延时，从而提高了系统性能。The W-CDMA self-adaptive coherent receiving method proposed by the present invention improves the demodulation signal-to-noise ratio, and ensures that the radio frequency stability of the mobile station is not high, the mobile station moves at variable speed, or the wireless channel has significant non-stationary characteristics. stability without increasing the processing delay for demodulating user data, thereby improving system performance.

(四)附图说明：(4) Description of drawings:

图1为W-CDMA下行链路自适应接收机示意图。Figure 1 is a schematic diagram of a W-CDMA downlink adaptive receiver.

图2为W-CDMA上行链路自适应接收机示意图。Fig. 2 is a schematic diagram of a W-CDMA uplink adaptive receiver.

(五)具体实施方式：(5) Specific implementation methods:

下面结合附图说明发明的实施优选方式：The preferred embodiment of the invention is illustrated below in conjunction with the accompanying drawings:

如图1所示：As shown in Figure 1:

为描述方便作如下约定：主公共导频信道的扰码S_P，主公共导频信道的信道化码C_P，，用户业务信道的扰码S_D，用户业务信道的信道化码C_D，自适应算法的刷新周期：T_A。For the convenience of description, the following agreement is made: the scrambling code_SP of the main common pilot channel, the channelization code C_{P of the main common pilot channel, the scrambling code SDof} the user traffic channel, the channelization code_CD of the user traffic channel, Refresh period of the adaptive algorithm: T_A .

其中，1为主公共导频信道可控积分长度的匹配滤波器，2为业务信道的匹配滤波器，3为信噪比测量器，4为自适应算法控制器，5为自适应刷新时钟，6为时分开关，7为残留频差测量器，8为多比特用户数据输出，9为信噪比测量器3输出的信噪比Eb/It，10为残留频差测量器7输出的残留频差Δ，11为自适应算法控制器4输出的刷新的SFp，12为取共轭器。Among them, 1 is the matched filter of the controllable integration length of the main common pilot channel, 2 is the matched filter of the traffic channel, 3 is the signal-to-noise ratio measuring device, 4 is the adaptive algorithm controller, 5 is the adaptive refresh clock, 6 is a time-division switch, 7 is a residual frequency difference measuring device, 8 is a multi-bit user data output, 9 is the signal-to-noise ratio Eb/It output by the signal-to-noise ratio measuring device 3, and 10 is the residual frequency output of the residual frequency difference measuring device 7. The difference Δ, 11 is the refreshed SFp output by the adaptive algorithm controller 4, and 12 is the conjugator.

如图2所示：as shown in picture 2:

为描述方便作如下约定：Upiink DPCCH和Upiink DPDCH的扰码均为：5_D，Uplink DPCCH的信道化码：C_C，Uplink DPDCH的信道化码：C_D，自适应算法的刷新周期：T_A。For the convenience of description, the following agreement is made: the scrambling codes of both Upiink DPCCH and Upiink DPDCH are: 5_D , the channelization code of Uplink DPCCH: C_C , the channelization code of Uplink DPDCH: C_D , the refresh period of the adaptive algorithm: T_A .

其中，13为Uplink DPCCH可控积分长度的匹配滤波器，14为Upiink DPDCH的匹配滤波器，15为信噪比测量器，16为自适应算法控制器，17为自适应刷新时钟，18为残留频差测量器，19为信噪比测量器15输出的信噪比Eb/It，20为残留频差测量器18输出的残留频差Δf，21为自适应算法控制器16输出的刷新的SFc，22为取共轭器，23为多比特用户数据流输出。Among them, 13 is the matched filter of the controllable integral length of Uplink DPCCH, 14 is the matched filter of Uplink DPDCH, 15 is the signal-to-noise ratio measuring device, 16 is the adaptive algorithm controller, 17 is the adaptive refresh clock, and 18 is the residual Frequency difference measuring device, 19 is the signal-to-noise ratio Eb/It that signal-to-noise ratio measuring device 15 outputs, 20 is the residual frequency difference Δf that residual frequency difference measuring device 18 outputs, 21 is the refreshed SFc that adaptive algorithm controller 16 outputs , 22 is the conjugator, and 23 is the multi-bit user data stream output.

参见图1See Figure 1

主公共导频信道可控积分长度的匹配滤波器1解扩的码流含有因子(1-j)是由W-CDMA主公共导频信道调制特性决定的，因为W-CDMA主公共导频信道发送端调制了一个因子(1＋j)。The despread code stream content factor (1-j) of the matched filter with controllable integration length of the main common pilot channel is determined by the modulation characteristics of the W-CDMA main common pilot channel, because the W-CDMA main common pilot channel The sending end modulates a factor (1+j).

信噪比测量器3可以采用各种信噪比测量算法，它的输出信号为Eb/It。残留频差测量器7可以采用各种残留频差测量算法，对Downlink DPCCH中的各个子信道进行残留频差测量，通常使用Downlink DPCCH中的pilot子信道进行残留频差测量，它的输出信号为Δf。信噪比测量器3的输出信号Eb/It和残留频差测量器7的输出信号Δf输入到自适应算法控制器4。The signal-to-noise ratio measurer 3 can adopt various signal-to-noise ratio measurement algorithms, and its output signal is Eb/It. Residual frequency difference measurer 7 can adopt various residual frequency difference measurement algorithms, carry out residual frequency difference measurement to each sub-channel in the Downlink DPCCH, usually use the pilot sub-channel in the Downlink DPCCH to carry out residual frequency difference measurement, and its output signal is Δf. The output signal Eb/It of the signal-to-noise ratio measurer 3 and the output signal Δf of the residual frequency difference measurer 7 are input to the adaptive algorithm controller 4 .

自适应算法控制器4中可以存在多种自适应算法，这一类自适应算法的通式为

其中，SF_p[n]表示第n个自适应周期所使用的SF_p，[n]表示第n个自适应周期测量出的

，Δf[n]表示第n个自适应周期测量出的Δf。现在给出一种最常用的梯度自适应算法：第n个自适应周期的判别函数为：$\mathrm{\φ}\[n\]=\frac{(\mathrm{SIR}\_\mathrm{TH}-\frac{\mathrm{Eb}}{\mathrm{It}}\[n\])}{\mathrm{SIR}\_\mathrm{TH}}+\mathrm{\α}\•\left(\frac{f_C-|\mathrm{\Δf}\[n\]|}{f_C}\right)$自适应刷新规则为：There can be multiple adaptive algorithms in the adaptive algorithm controller 4, and the general formula of this type of adaptive algorithm is

where SF_p [n] represents the SF_p used in the nth adaptation period, [n] indicates the measured value of the nth adaptive period

, Δf[n] represents Δf measured in the nth adaptation period. Now give one of the most commonly used gradient adaptive algorithms: the discriminant function of the nth adaptive cycle is:$\mathrm{\φ}\[\mathrm{no}\]=\frac{(\mathrm{SIR}\_\mathrm{TH}-\frac{\mathrm{Eb}}{\mathrm{it}}\[\mathrm{no}\])}{\mathrm{SIR}\_\mathrm{TH}}+\mathrm{\α}\•\left(\frac{f_C-|\mathrm{\Δ\; f}\[\mathrm{no}\]|}{f_C}\right)$ The adaptive refresh rules are:

其中，φ[n]为判别函数，SIR-TH为信噪比门限，f_c(W-CDMA中f_c＝3.84MHz)为码片的频率，α(α＞0)为权重因子，φ_th1和φ_th2为判别函数门限，SF_p_MAX和SF_p_MIN分别扩频因子的最大取值和最小取值，max(，)和min(，)分别为取最大值函数和取最小值函数。自适应刷新时钟5的周期为T_A，通常取T_A＝k·T_SLOT，k∈N，此时钟用来控制信噪比测量器3，、自适应算法控制器4、残留频差测量器7同步工作。Among them, φ[n] is the discriminant function, SIR-TH is the signal-to-noise ratio threshold, f_c (f_c =3.84MHz in W-CDMA) is the chip frequency, α (α>0) is the weight factor, φ_th1 and φ_th2 is the threshold of the discriminant function, SF_p _MAX and SF_p _MIN are the maximum value and the minimum value of the spreading factor respectively, max(,) and min(,) are the maximum value function and the minimum value function respectively. The period of the adaptive refresh clock 5 is T_A , usually T_A =k·T_SLOT , k∈N, This clock is used to control the signal-to-noise ratio measurer 3, the adaptive algorithm controller 4, and the residual frequency difference measurer 7 to work synchronously.

时分开关6根据W-CDMA系统的规定决定业务信道中哪一个比特属于DownlinkDPCCH，哪一个比特属于Downlink DPDCH。多比特用户数据输出8是时分开关6输出的一支，是Downlink DPDCH，即多比特用户数据流，当然，多比特用户数据输出8还需要进行解码等后续操作才可以得到真正意义上的用户数据。The time division switch 6 determines which bit in the traffic channel belongs to the Downlink DPCCH and which bit belongs to the Downlink DPDCH according to the regulations of the W-CDMA system. The multi-bit user data output 8 is one of the outputs of the time division switch 6, which is Downlink DPDCH, that is, the multi-bit user data stream. Of course, the multi-bit user data output 8 needs to be decoded and other follow-up operations to obtain the real user data .

取共轭器12用于对输入复信号，取共轭后输出。The conjugator 12 is used for conjugating the input complex signal and outputting it.

参见图2See Figure 2

Uplink DPCCH可控积分长度的匹配滤波器13和Uplink DPDCH的匹配滤波器14使用了同一个扰码。Uplink DPCCH可控积分长度的匹配滤波器13中解扩的码流含有因子(-j)，这是由W-CDMA上行调制特性决定的，因为Uplink DPCCH发送端调制了一个因子j。信噪比测量器15，自适应算法控制器16，自适应刷新时钟17，残留频差测量器18，取共轭器22与附图1中的相应结构类似。The matchedfilter 13 of the controllable integration length of the Uplink DPCCH and the matchedfilter 14 of the Uplink DPDCH use the same scrambling code. The code stream despread in the matchedfilter 13 with controllable integration length of Uplink DPCCH contains factor (-j), which is determined by W-CDMA uplink modulation characteristics, because the sending end of Uplink DPCCH modulates a factor j. The signal-to-noise ratio measurer 15, the adaptive algorithm controller 16, the adaptive refresh clock 17, the residual frequency difference measurer 18, and the conjugator 22 are similar to the corresponding structures in Fig. 1 .

上述下行链路的自适应相干接收机中取共轭器12也可被信道估计滤波器或环路滤波器代替。The conjugator 12 in the above-mentioned downlink adaptive coherent receiver can also be replaced by a channel estimation filter or a loop filter.

上述上行链路的自适应相干接收机中取共轭器22也可被信道估计滤波器或环路滤波器代替。The conjugator 22 in the above-mentioned uplink adaptive coherent receiver can also be replaced by a channel estimation filter or a loop filter.

上述下行链路的自适应相干接收方法中自适应算法控制器4也可以使用其它自适应算法代替梯度自适应算法。In the adaptive coherent receiving method for the above-mentioned downlink, the adaptive algorithm controller 4 may also use other adaptive algorithms instead of the gradient adaptive algorithm.

上述上行链路的自适应相干接收方法中自适应算法控制器16也可以使用其它自适应算法代替梯度自适应算法。In the above-mentioned uplink adaptive coherent receiving method, the adaptive algorithm controller 16 may also use other adaptive algorithms instead of the gradient adaptive algorithm.

上述下行链路的自适应相干接收方法中在移动台的基带接收信号中分离出多径信号，然后使用RAKE合并，在RAKE合并的每一支都使用了本发明中的W-CDMA下行链路的自适应相干接收方法的结构，最后将所有这些分支的多比特用户数据流相加，做为RAKE合并输出的用户数据流。In the adaptive coherent reception method of the above-mentioned downlink, the multi-path signal is separated from the baseband received signal of the mobile station, and then combined by RAKE, each branch of the combination of RAKE uses the W-CDMA downlink of the present invention The structure of the adaptive coherent receiving method, and finally add the multi-bit user data streams of all these branches to be the user data stream combined and output by RAKE.

上述上行链路的自适应相干接收方法中在基站的基带接收信号中分离出多径信号，然后使用RAKE合并，在RAKE合并的每一支都使用了本发明中的W-CDMA上行链路的自适应相干接收方法的结构，最后将所有这些分支的多比特用户数据流相加，做为RAKE合并输出的用户数据流。In the adaptive coherent reception method of the above-mentioned uplink, the multi-path signal is separated from the baseband received signal of the base station, and then combined using RAKE, each branch of the RAKE combination uses the W-CDMA uplink in the present invention In the structure of the adaptive coherent reception method, the multi-bit user data streams of all these branches are added at last to be the user data stream combined and output by RAKE.

上述自适应相干接收机中门限可以都是固定的，或者可以都自适应调整，或者一部分是固定的，另一部分自适应调整。The thresholds in the adaptive coherent receiver mentioned above may all be fixed, or all of them may be adjusted adaptively, or part of them may be fixed and the other part may be adjusted adaptively.

Claims (10)

Translated fromChinese

1.第三代移动通信W-CDMA自适应相干接收方法，其下行链路方法按以下流程：主公共导频信道去除扰码和信道化码影响，做某一长度SFp的积分，产生输出比特，测量其信噪比Eb/It。再使用上述输出比特与经过匹配滤波器的业务信道做相关接收，得到的相关接收后的数据流经过时分开关后，输出的一支为Downlink DPCCH，测量此Downlink DPCCH中的残留频差Δf。根据Eb/It和Δf，自适应决定下一周期内主公共导频信道的积分长度SFp。1. The third-generation mobile communication W-CDMA adaptive coherent receiving method, its downlink method follows the following process: the main common pilot channel removes the influence of scrambling code and channelization code, and integrates a certain length of SFp to generate output bits , measure its signal-to-noise ratio Eb/It. Then use the above output bits to perform correlation reception with the traffic channel that has passed through the matched filter. After the data stream obtained after correlation reception passes through the time-division switch, the output one is the Downlink DPCCH, and the residual frequency difference Δf in the Downlink DPCCH is measured. According to Eb/It and Δf, the integral length SFp of the main common pilot channel in the next cycle is adaptively determined.其上行链路方法按以下流程：Uplink DPCCH去除扰码和信道化码影响，做某一长度SFc的积分，产生输出比特，测量其信噪比Eb/It。再使用上述输出比特与经过匹配滤波器的Upiink DPDCH做相关接收，测量得到的相关接收后的数据流中残留频差Δf。根据Eb/It和Δf，自适应决定下一周期内Uplink DPCCH的积分长度SFc。The uplink method follows the following process: Uplink DPCCH removes the influence of scrambling code and channelization code, integrates a certain length of SFc, generates output bits, and measures its signal-to-noise ratio Eb/It. Then use the above output bits to perform correlation reception with the Upink DPDCH passed through the matched filter, and measure the residual frequency difference Δf in the data stream after correlation reception. According to Eb/It and Δf, the integration length SFc of the Uplink DPCCH in the next period is adaptively determined.2.第三代移动通信W-CDMA自适应相干接收机，其特征在于由可控积分长度的匹配滤波器，信噪比测量器，自适应算法控制器，时分开关，自适应刷新时钟，残留频差测量器，取共轭器，乘法器组成。2. The third-generation mobile communication W-CDMA adaptive coherent receiver is characterized by a matched filter with controllable integration length, a signal-to-noise ratio measurer, an adaptive algorithm controller, a time-division switch, an adaptive refresh clock, and a residual The frequency difference measuring device is composed of a conjugator and a multiplier.3.如权利要求2所述的第三代移动通信W-CDMA自适应相干接收机，其特征在于下行链路自适应相干接收机中，主公共导频信道可控积分长度的匹配滤波器的输入是移动台的基带接收信号，输出分两支，一支和信噪比测量器相连，另一支和取共轭器相连。信噪比测量器的输出与自适应算法控制器的输入相连。业务信道的匹配滤波器输入是移动台的基带接收信号，输出和乘法器的输入相连，此乘法器的另一输入与取共轭器的输出相连。乘法器的输出与时分开关相连。时分开关的输出分两支，一支输出下行专用物理控制信道(DownlinkDPCCH)到残留频差测量器，另一支输出下行专用物理数据信道(Downlink DPDCH)，即多比特用户数据流。残留频差测量器输出到自适应算法控制器。自适应算法控制器输出刷新的SFp到主公共导频信道可控积分长度的匹配滤波器。自适应刷新时钟输出三支，分别到信噪比测量器，残留频差测量器和自适应算法控制器。3. The third generation mobile communication W-CDMA adaptive coherent receiver as claimed in claim 2 is characterized in that in the downlink adaptive coherent receiver, the matched filter of the main common pilot channel controllable integration length The input is the baseband receiving signal of the mobile station, and the output is divided into two branches, one is connected with the signal-to-noise ratio measuring device, and the other is connected with the conjugator. The output of the signal-to-noise ratio measurer is connected to the input of the adaptive algorithm controller. The input of the matched filter of the traffic channel is the baseband received signal of the mobile station, the output is connected with the input of the multiplier, and the other input of the multiplier is connected with the output of the conjugator. The output of the multiplier is connected with the time division switch. The output of the time division switch is divided into two branches, one outputs the downlink dedicated physical control channel (DownlinkDPCCH) to the residual frequency difference measuring device, and the other outputs the downlink dedicated physical data channel (Downlink DPDCH), that is, multi-bit user data stream. The residual frequency difference measurer is output to the adaptive algorithm controller. The adaptive algorithm controller outputs the refreshed SFp to the matched filter with controllable integration length of the main common pilot channel. Three adaptive refresh clock outputs are sent to the signal-to-noise ratio measurer, the residual frequency difference measurer and the adaptive algorithm controller respectively.4.如权利要求2所述的第三代移动通信W-CDMA自适应相干接收机，其特征在于上行链路自适应相干接收机中，Uplink DPCCH可控积分长度的匹配滤波器的输入是基站的基带接收信号，输出分两支，一支和信噪比测量器相连，另一支和取共轭器相连。信噪比测量器的输出与自适应算法控制器的输入相连。上行专用物理数据信道(Uplink DPDCH)的匹配滤波器输入是移动台的基带接收信号，输出和乘法器的输入相连，此乘法器的另一输入与取共轭器的输出相连。乘法器的输出与残留频差测量器的输入相连，并同时输出多比特用户数据流。残留频差测量器输出到自适应算法控制器。自适应算法控制器输出刷新的SFc到Uplink DPCCH可控积分长度的匹配滤波器。自适应刷新时钟输出三支，分别到信噪比测量器，残留频差测量器和自适应算法控制器。4. The third generation mobile communication W-CDMA adaptive coherent receiver as claimed in claim 2 is characterized in that in the uplink adaptive coherent receiver, the input of the matched filter of the Uplink DPCCH controllable integration length is the base station The baseband receives the signal, and the output is divided into two branches, one is connected to the signal-to-noise ratio measuring device, and the other is connected to the conjugator. The output of the signal-to-noise ratio measurer is connected to the input of the adaptive algorithm controller. The matched filter input of the uplink dedicated physical data channel (Uplink DPDCH) is the baseband received signal of the mobile station, and the output is connected to the input of the multiplier, and the other input of the multiplier is connected to the output of the conjugator. The output of the multiplier is connected to the input of the residual frequency difference measurer, and simultaneously outputs a multi-bit user data stream. The residual frequency difference measurer is output to the adaptive algorithm controller. The adaptive algorithm controller outputs the refreshed SFc to the matched filter of the Uplink DPCCH controllable integration length. Three adaptive refresh clock outputs are sent to the signal-to-noise ratio measurer, the residual frequency difference measurer and the adaptive algorithm controller respectively.5.如权利要求2所述的第三代移动通信W-CDMA自适应相干接收机，其特征在于取共轭器12也可被信道估计滤波器或环路滤波器代替。5. The third generation mobile communication W-CDMA adaptive coherent receiver as claimed in claim 2, characterized in that the conjugator 12 can also be replaced by a channel estimation filter or a loop filter.6.如权利要求2所述的第三代移动通信W-CDMA自适应相干接收机，其特征在于取共轭器22也可被信道估计滤波器或环路滤波器代替。6. The third generation mobile communication W-CDMA adaptive coherent receiver as claimed in claim 2, characterized in that the conjugator 22 can also be replaced by a channel estimation filter or a loop filter.7.如权利要求1所述的第三代移动通信W-CDMA自适应相干接收方法，其特征在于自适应算法控制器4中也可使用其它自适应算法代替梯度自适应算法。7. The third generation mobile communication W-CDMA adaptive coherent receiving method according to claim 1, characterized in that other adaptive algorithms can be used in the adaptive algorithm controller 4 to replace the gradient adaptive algorithm.8.如权利要求1所述的第三代移动通信W-CDMA自适应相干接收方法，其特征在于自适应算法控制器16中使用其它自适应算法代替梯度自适应算法。8. The third generation mobile communication W-CDMA adaptive coherent receiving method according to claim 1, characterized in that other adaptive algorithms are used in the adaptive algorithm controller 16 to replace the gradient adaptive algorithm.9.如权利要求1所述的第三代移动通信W-CDMA自适应相干接收方法，其特征在于在移动台的基带接收信号中分离出多径信号，然后使用RAKE合并，在RAKE合并的每一支都使用了本发明中的W-CDMA下行链路的自适应相干接收方法的结构，最后将所有这些分支的多比特用户数据流相加，做为RAKE合并输出的用户数据流。9. The third generation mobile communication W-CDMA adaptive coherent receiving method as claimed in claim 1, characterized in that in the baseband received signal of the mobile station, the multipath signal is separated, and then RAKE is used to combine, and each step of the RAKE combination One branch uses the structure of the W-CDMA downlink adaptive coherent receiving method in the present invention, and finally adds the multi-bit user data streams of all these branches as the user data stream combined and outputted by RAKE.10.如权利要求1所述的第三代移动通信W-CDMA自适应相干接收方法，其特征在于其中门限可以都是固定的，或者可以都自适应调整，或者一部分是固定的，另一部分自适应调整。10. The third-generation mobile communication W-CDMA adaptive coherent receiving method as claimed in claim 1, wherein the thresholds can all be fixed, or can be adjusted adaptively, or a part is fixed, and another part is automatically adjusted. Adapt to adjust.

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