技术领域technical field
本发明涉及通信技术领域，尤其涉及一种LTE通信发射系统、接收系统及通信终端。The present invention relates to the technical field of communication, in particular to an LTE communication transmitting system, receiving system and communication terminal.
背景技术Background technique
随着用户对无线业务要求的增加，4G-LTE技术的使用及市场需求发展增加。在LTE(Long Term Evolution，长期演进)技术的终端及设备中，上行与下行分别采用了SC-FDMA(Single-carrier Frequency-Division Multiple Access，单载波频分多址)技术与OFDMA(Orthogonal Frequency Division Multiple Access，正交频分多址)技术，信号输出的峰均比明显增加，为降低信号峰均比高引起的信号在放大过程中的失真，目前较为确认的有些下两种方案：1)研发出更高增益的PA(Power Amplifier，射频功率放大器)与LNA(LowNoise Amplifier，低噪声放大器)，减小在信号放大过程中由峰均比导致的失真，这些高性能的PA与LNA在大型设备中已经得到应用；2)从信号的算法上优化信号的峰均比，使用信号在质量保证的基础上尽量降低峰均比。With the increase of user requirements for wireless services, the use of 4G-LTE technology and the development of market demand have increased. In LTE (Long Term Evolution, long-term evolution) technology terminals and equipment, uplink and downlink respectively adopt SC-FDMA (Single-carrier Frequency-Division Multiple Access) technology and OFDMA (Orthogonal Frequency Division Multiple Access, Orthogonal Frequency Division Multiple Access) technology, the peak-to-average ratio of the signal output is significantly increased. In order to reduce the distortion of the signal during the amplification process caused by the high peak-to-average ratio of the signal, there are currently two more confirmed solutions: 1) Developed higher gain PA (Power Amplifier, RF power amplifier) and LNA (LowNoise Amplifier, low noise amplifier) to reduce the distortion caused by the peak-to-average ratio in the process of signal amplification. These high-performance PA and LNA are used in large It has been applied in the equipment; 2) Optimize the peak-to-average ratio of the signal from the algorithm of the signal, and use the signal to minimize the peak-to-average ratio on the basis of quality assurance.
以上两种方案的共同点都在于降低高峰均比信号在通信设备或终端中的失真，提高通信质量。从目前的方案来看，高增益PA与LNA的器件成本高，同时功耗增加，该方案在基站等设备上可以接受，但在手机等要求低功耗的终端中劣势明显，功耗增加必然导致终端性能下降；从信号算法上优化信号的峰均比主要缺点在于算法过于复杂，各种算法的效率会有不同程度降低。The common point of the above two solutions is to reduce the distortion of the peak-to-average ratio signal in the communication device or terminal, and improve the communication quality. Judging from the current solution, high-gain PA and LNA have high device costs and increased power consumption. This solution is acceptable for base stations and other equipment, but it has obvious disadvantages in mobile phones and other terminals that require low power consumption, and the increase in power consumption is inevitable. The main disadvantage of optimizing the peak-to-average ratio of the signal from the signal algorithm is that the algorithm is too complicated, and the efficiency of various algorithms will be reduced to varying degrees.
综上可知，现有的LTE通信系统及通信终端，在实际使用上，显然存在不便与缺陷，所以有必要加以改进。In summary, the existing LTE communication system and communication terminal obviously have inconveniences and defects in practical use, so it is necessary to improve them.
发明内容Contents of the invention
针对上述的缺陷，本发明的目的在于提供一种LTE通信发射系统、接收系统及通信终端，其可以根据信号峰均比调整工作状态，提高信号传输效率与质量。In view of the above defects, the object of the present invention is to provide an LTE communication transmitting system, receiving system and communication terminal, which can adjust the working state according to the signal peak-to-average ratio, and improve the signal transmission efficiency and quality.
为了实现上述目的，本发明提供一种LTE通信发射系统，包括：In order to achieve the above object, the present invention provides an LTE communication transmitting system, comprising:
射频发送器，用于输出LTE调制信号；A radio frequency transmitter for outputting LTE modulation signals;
射频功率放大器，用于对所述LTE调制信号放大处理；A radio frequency power amplifier, used for amplifying and processing the LTE modulation signal;
第一信号检测器，用于检测所述LTE调制信号的峰值及平均功率，并计算获取所述LTE调制信号的峰均比的值，并将所述峰均比的值传送到第一控制器；A first signal detector, configured to detect the peak value and average power of the LTE modulation signal, and calculate and obtain the value of the peak-to-average ratio of the LTE modulation signal, and transmit the value of the peak-to-average ratio to the first controller ;
第一控制器，用于根据所述峰均比控制第一匹配负载的阻抗值；a first controller, configured to control the impedance value of the first matching load according to the peak-to-average ratio;
第一匹配负载，作为所述射频功率放大器的匹配负载，所述第一匹配负载为可变阻抗装置。The first matching load is used as the matching load of the radio frequency power amplifier, and the first matching load is a variable impedance device.
根据本发明的LTE通信发射系统，所述第一控制器预设有所述LTE调制信号峰均比的第一阈值；According to the LTE communication transmission system of the present invention, the first controller is preset with a first threshold of the peak-to-average ratio of the LTE modulation signal;
若所述LTE调制信号峰均比大于所述第一阈值，则所述第一控制器控制所述第一匹配负载的阻抗值，使所述射频功率放大器工作在第一工作状态；If the peak-to-average ratio of the LTE modulation signal is greater than the first threshold, the first controller controls the impedance value of the first matching load to make the radio frequency power amplifier work in a first working state;
否则所述第一控制器控制所述第一匹配负载的阻抗值，使所述射频功率放大器工作在第二工作状态。Otherwise, the first controller controls the impedance value of the first matching load to make the radio frequency power amplifier work in the second working state.
根据本发明的LTE通信发射系统，所述第一匹配负载为可变介电常数负载装置。According to the LTE communication transmission system of the present invention, the first matching load is a variable dielectric constant load device.
根据本发明的LTE通信发射系统，所述第一匹配负载为可变电容和/或电感的组合装置。According to the LTE communication transmission system of the present invention, the first matching load is a combined device of variable capacitance and/or inductance.
本发明还提供一种包括如上所述发射系统的通信终端。The present invention also provides a communication terminal including the above-mentioned transmitting system.
本发明还提供一种LTE通信接收系统，包括：The present invention also provides an LTE communication receiving system, including:
低噪声放大器，用于对接收到的LTE信号放大处理；A low noise amplifier for amplifying and processing the received LTE signal;
第二信号检测器，用于检测所述LTE信号的峰值及平均功率，并计算获取所述LTE信号的峰均比的值，并将所述峰均比的值传送到第二控制器；The second signal detector is used to detect the peak value and average power of the LTE signal, and calculate and obtain the value of the peak-to-average ratio of the LTE signal, and transmit the value of the peak-to-average ratio to the second controller;
第二控制器，用于根据所述峰均比控制第二匹配负载的阻抗值；a second controller, configured to control an impedance value of a second matching load according to the peak-to-average ratio;
第二匹配负载，作为所述低噪声放大器的匹配负载，所述第二匹配负载为可变阻抗装置；The second matching load is used as the matching load of the low noise amplifier, and the second matching load is a variable impedance device;
射频接收器，用于对放大后的所述LTE信号解调处理。The radio frequency receiver is used for demodulating the amplified LTE signal.
根据本发明的LTE通信接收系统，所述第二控制器预设有所述LTE信号峰均比的第二阈值；According to the LTE communication receiving system of the present invention, the second controller is preset with a second threshold of the peak-to-average ratio of the LTE signal;
若所述LTE信号峰均比大于所述第二阈值，则所述第二控制器控制所述第二匹配负载的阻抗值，使所述低噪声放大器工作在第一工作状态；If the peak-to-average ratio of the LTE signal is greater than the second threshold, the second controller controls the impedance value of the second matching load to make the low noise amplifier work in the first working state;
否则所述第二控制器控制所述第二匹配负载的阻抗值，使所述低噪声放大器工作在第二工作状态。Otherwise, the second controller controls the impedance value of the second matching load to make the low noise amplifier work in the second working state.
根据本发明的LTE通信接收系统，所述第二匹配负载为可变介电常数负载装置。According to the LTE communication receiving system of the present invention, the second matching load is a variable dielectric constant load device.
根据本发明的LTE通信接收系统，所述第二匹配负载为可变电容和/或电感的组合装置。According to the LTE communication receiving system of the present invention, the second matching load is a combined device of variable capacitance and/or inductance.
本发明还提供一种包括如上所述接收系统的通信终端。The present invention also provides a communication terminal including the above receiving system.
本发明通过在LTE通信发射系统及接收系统设置信号检测器，使其可以检测信号的峰值及平均功率，以获取该信号的峰均比。同时，系统的放大器的匹配负载均采用可变负载，其受控制器的控制。控制器通过信号峰均比判断出系统的工作状态，进而控制负载作相应的阻抗变化，以使信号能高质量及高效率的传输。In the present invention, signal detectors are arranged in the LTE communication transmitting system and receiving system so that they can detect the peak value and average power of the signal, so as to obtain the peak-to-average ratio of the signal. At the same time, the matching loads of the amplifiers of the system all adopt variable loads, which are controlled by the controller. The controller judges the working state of the system through the peak-to-average ratio of the signal, and then controls the load to make corresponding impedance changes, so that the signal can be transmitted with high quality and high efficiency.
附图说明Description of drawings
图1是本发明一实施例的LTE通信发射系统的结构示意图；FIG. 1 is a schematic structural diagram of an LTE communication transmission system according to an embodiment of the present invention;
图2是本发明一实施例的LTE通信接收系统的结构示意图；2 is a schematic structural diagram of an LTE communication receiving system according to an embodiment of the present invention;
图3是本发明一实施例的通信终端的结构示意图；FIG. 3 is a schematic structural diagram of a communication terminal according to an embodiment of the present invention;
图4A是本发明一实施例的放大器的增益与阻抗关系示意图；4A is a schematic diagram of the relationship between gain and impedance of an amplifier according to an embodiment of the present invention;
图4B是本发明一实施例的放大器的效率与阻抗关系示意图。FIG. 4B is a schematic diagram of the relationship between efficiency and impedance of an amplifier according to an embodiment of the present invention.
具体实施方式detailed description
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
参见图1，本发明提供了一种LTE通信发射系统，该系统100可以是内置于通信终端的软件单元，硬件单元或软硬件结合单元。所述的通信终端可以为移动终端比如手机、PDA（Personal Digital Assistant，个人数字助理）、掌上电脑等。所述的LTE通信发射系统100包括：Referring to FIG. 1 , the present invention provides an LTE communication transmission system. The system 100 may be a software unit, a hardware unit or a combination of software and hardware built in a communication terminal. The communication terminal may be a mobile terminal such as a mobile phone, a PDA (Personal Digital Assistant, personal digital assistant), a palmtop computer, and the like. The LTE communication transmission system 100 includes:
射频发送器101，用于输出LTE调制信号。在LTE通信发射系统100中，其发射采用SC-CDMA技术，即射频发送器101输出的LTE调制信号为SC-CDMA调制信号，并将其传送到射频功率放大器102处理。The radio frequency transmitter 101 is configured to output an LTE modulation signal. In the LTE communication transmission system 100 , SC-CDMA technology is used for transmission, that is, the LTE modulation signal output by the radio frequency transmitter 101 is an SC-CDMA modulation signal, which is sent to the radio frequency power amplifier 102 for processing.
射频功率放大器102，用于对所述LTE调制信号放大处理。LTE信号经过调制后，在发射前需要经过射频功率放大器102放大处理，借此使信号能传输更远的距离来满足通信的要求。The radio frequency power amplifier 102 is configured to amplify and process the LTE modulation signal. After the LTE signal is modulated, it needs to be amplified by the radio frequency power amplifier 102 before transmission, so that the signal can be transmitted over a longer distance to meet the communication requirements.
第一信号检测器103，用于检测所述LTE调制信号的峰值及平均功率，并计算获取所述LTE调制信号的峰均比的值，并将所述峰均比的值传送到第一控制器104。具体应用中，可以通过集成功率检测器及峰值检测器实现，信号功率及峰值检测技术已相对成熟，在此不再赘述。The first signal detector 103 is configured to detect the peak value and average power of the LTE modulation signal, and calculate and obtain the value of the peak-to-average ratio of the LTE modulation signal, and transmit the value of the peak-to-average ratio to the first controller device 104. In a specific application, it can be realized by integrating a power detector and a peak detector, and the signal power and peak detection technologies are relatively mature, and will not be repeated here.
第一控制器104，用于根据所述峰均比控制第一匹配负载105的阻抗值。该第一控制器104与第一信号检测器103连接，其可以为CPU器件，并通过GPIO或相关的端口输出可变的控制电压，进而控制第一匹配负载105的阻抗值的变化。The first controller 104 is configured to control the impedance value of the first matching load 105 according to the peak-to-average ratio. The first controller 104 is connected to the first signal detector 103 , which may be a CPU device, and outputs a variable control voltage through GPIO or related ports, thereby controlling the change of the impedance value of the first matching load 105 .
第一匹配负载105，作为所述射频功率放大器102的匹配负载，该第一匹配负载105为可变阻抗装置。比如，该第一匹配负载105可以为可变介电常数负载装置，也可以为压控的可变电容和/或电感的组合装置等，该可变阻抗装置不限于上述两种装置。The first matching load 105 is used as the matching load of the RF power amplifier 102, and the first matching load 105 is a variable impedance device. For example, the first matching load 105 may be a variable dielectric constant load device, or a combination device of voltage-controlled variable capacitance and/or inductance, etc. The variable impedance device is not limited to the above two devices.
目前已经有相关的可以通过电压来改变容值与感值的装置，可以作为放大器的第一匹配负载105。另外，装置阻抗也随着装置的介电常数变化而变化，可以使用相关的可变介电常数材料作为第一匹配负载105，当然其它的可变负载阻抗装置也可以作为射频功率放大器102的输出负载。Currently there is a related device that can change the capacitance and inductance by voltage, which can be used as the first matching load 105 of the amplifier. In addition, the impedance of the device also changes with the dielectric constant of the device, and relevant variable dielectric constant materials can be used as the first matching load 105. Of course, other variable load impedance devices can also be used as the output of the radio frequency power amplifier 102. load.
本发明通过第一控制器104控制第一匹配负载105的阻抗值，借此改变系统的工作状态，以提高信号的传输质量。优选的是，本发明的第一控制器104预设有所述LTE调制信号峰均比的第一阈值，如果检测到的信号的实际峰均比大于该第一阈值，则说明该峰均比为高峰均比，第一控制器104控制第一匹配负载105的阻抗变化，进而控制射频功率放大器102使其工作在高增益状态(第一工作状态)；如果检测到的信号的实际峰均比不大于该第一阈值，则说明该峰均比为低峰均比，第一控制器104控制第一匹配负载105的阻抗变化，进而控制射频功率放大器102使其工作在高效率状态(第二工作状态)。In the present invention, the impedance value of the first matching load 105 is controlled by the first controller 104, thereby changing the working state of the system and improving the transmission quality of the signal. Preferably, the first controller 104 of the present invention is preset with a first threshold of the peak-to-average ratio of the LTE modulated signal, and if the actual peak-to-average ratio of the detected signal is greater than the first threshold, it means that the peak-to-average ratio For the peak-to-average ratio, the first controller 104 controls the impedance change of the first matching load 105, and then controls the radio frequency power amplifier 102 to work in a high-gain state (the first working state); if the actual peak-to-average ratio of the detected signal If it is not greater than the first threshold, it means that the peak-to-average ratio is a low peak-to-average ratio. The first controller 104 controls the impedance change of the first matching load 105, and then controls the radio frequency power amplifier 102 to work in a high-efficiency state (second working status).
再参见图2，本发明相应的提供一种LTE通信接收系统，该系统200可以是内置于通信终端的软件单元，硬件单元或软硬件结合单元。所述的通信终端可以为移动终端比如手机、PDA（Personal Digital Assistant，个人数字助理）、掌上电脑等。所述的LTE通信接收系统200包括：Referring to FIG. 2 again, the present invention accordingly provides an LTE communication receiving system. The system 200 may be a software unit, a hardware unit or a combination of software and hardware built in a communication terminal. The communication terminal may be a mobile terminal such as a mobile phone, a PDA (Personal Digital Assistant, personal digital assistant), a palmtop computer, and the like. The LTE communication receiving system 200 includes:
低噪声放大器201，用于对接收到的LTE信号放大处理。在LTE通信接收系统200中，接收到的LTE信号需要首先通过该低噪声放大器201对接收到的信号进行放大，以保证LTE信号能够可靠解调。The low noise amplifier 201 is used for amplifying and processing the received LTE signal. In the LTE communication receiving system 200, the received LTE signal needs to be amplified by the low noise amplifier 201 first, so as to ensure that the LTE signal can be reliably demodulated.
第二信号检测器202，用于检测所述LTE信号的峰值及平均功率，并计算获取所述LTE信号的峰均比的值，并将所述峰均比的值传送到第二控制器203。该第二信号检测器202与前述第一信号检测器103的结构原理相同，在此不再赘述。The second signal detector 202 is configured to detect the peak value and average power of the LTE signal, and calculate and obtain the value of the peak-to-average ratio of the LTE signal, and transmit the value of the peak-to-average ratio to the second controller 203 . The structure principle of the second signal detector 202 is the same as that of the aforementioned first signal detector 103 , which will not be repeated here.
第二控制器203，用于根据所述峰均比控制第二匹配负载204的阻抗值。该第二控制器203与第二信号检测器202连接，其可以为CPU器件，并通过GPIO或相关的端口输出可变的控制电压，进而控制第二匹配负载204的阻抗值的变化。The second controller 203 is configured to control the impedance value of the second matching load 204 according to the peak-to-average ratio. The second controller 203 is connected to the second signal detector 202 , which may be a CPU device, and outputs a variable control voltage through GPIO or related ports, thereby controlling the change of the impedance value of the second matching load 204 .
第二匹配负载204，作为所述低噪声放大器201的匹配负载，所述第二匹配负载204为可变阻抗装置。比如，该第一匹配负载105可以为可变介电常数负载装置，也可以为压控的可变电容和/或电感的组合装置等，该可变阻抗装置不限于上述两种装置。The second matching load 204 is used as the matching load of the low noise amplifier 201, and the second matching load 204 is a variable impedance device. For example, the first matching load 105 may be a variable dielectric constant load device, or a combination device of voltage-controlled variable capacitance and/or inductance, etc. The variable impedance device is not limited to the above two devices.
射频接收器205，用于对放大后的所述LTE信号解调处理。在LTE通信接收系统200中，其LTE信号解调采用OFDMA技术。The radio frequency receiver 205 is configured to demodulate the amplified LTE signal. In the LTE communication receiving system 200, the LTE signal demodulation adopts OFDMA technology.
本发明通过第二控制器203控制第二匹配负载204的阻抗值，借此改变系统的工作状态，以提高信号的传输质量。优选的是，本发明的第二控制器203预设有所述LTE信号峰均比的第二阈值，如果检测到的信号的实际峰均比大于该第二阈值，则说明该峰均比为高峰均比，第二控制器203控制第二匹配负载204的阻抗变化，进而控制低噪声放大器201使其工作在高增益状态(第一工作状态)；如果检测到的信号的实际峰均比不大于该第一阈值，则说明该峰均比为低峰均比，第二控制器203控制第二匹配负载204的阻抗变化，进而控制低噪声放大器201使其工作在高效率状态(第二工作状态)。In the present invention, the impedance value of the second matching load 204 is controlled by the second controller 203, thereby changing the working state of the system and improving the transmission quality of the signal. Preferably, the second controller 203 of the present invention is preset with a second threshold of the peak-to-average ratio of the LTE signal, and if the actual peak-to-average ratio of the detected signal is greater than the second threshold, it means that the peak-to-average ratio is Peak-to-average ratio, the second controller 203 controls the impedance change of the second matching load 204, and then controls the low-noise amplifier 201 to make it work in a high-gain state (first working state); if the actual peak-to-average ratio of the detected signal is not If it is greater than the first threshold, it means that the peak-to-average ratio is a low peak-to-average ratio. The second controller 203 controls the impedance change of the second matching load 204, and then controls the low-noise amplifier 201 to work in a high-efficiency state (the second working state).
LTE通信发射或接收系统中，放大器在不同的负载条件下，会工作在不同的状态，该状态可以确定，结合图4A和图4B，该图为本发明一实施例的PA的不同增益与效率的SMITH圆图，从图中可以看出PA的增益最佳阻抗点与效率最大阻抗点不同，对于LNA也具有同样的工作状态。In the LTE communication transmitting or receiving system, the amplifier will work in different states under different load conditions, and this state can be determined. Combining with Fig. 4A and Fig. 4B, this figure shows the different gains and efficiencies of the PA according to an embodiment of the present invention It can be seen from the SMITH chart of the figure that the best impedance point of PA gain is different from the maximum impedance point of efficiency, and it also has the same working state for LNA.
本发明的LTE通信发射系统和接收系统可降低高峰均比信号在通信发射与接收链路过程中失真的问题，提高信号传输的质量，同时，在信号峰均比较低的情况下可以控制使对应的放大器工作在高效率状态，节省功耗。The LTE communication transmitting system and receiving system of the present invention can reduce the problem of distortion of the peak-to-average ratio signal in the process of communication transmitting and receiving links, improve the quality of signal transmission, and at the same time, can control the corresponding The amplifier works in a high-efficiency state to save power consumption.
本发明还相应的提供一种包括如上所述LTE通信发射系统100及LTE通信接收系统200的通信终端300，如图3所示。该通信终端300中，射频发送器101及射频接收器205可以一体设置，使其具有SC-CDMA调制及OFDMA解调功能，并通过发送/接收天线完成与基站的信号传输。The present invention also correspondingly provides a communication terminal 300 comprising the above-mentioned LTE communication transmitting system 100 and LTE communication receiving system 200 , as shown in FIG. 3 . In the communication terminal 300, the radio frequency transmitter 101 and the radio frequency receiver 205 can be integrated to have SC-CDMA modulation and OFDMA demodulation functions, and complete signal transmission with the base station through the sending/receiving antenna.
LTE在上行发射与下行接收分别采用SC-FDMA技术与OFDMA技术，这两种调试载波技术的信号峰均比较高，即在信号平均功率一定的情况下，信号峰值较高，而PA与LNA有一定的线性度，最大输出功率一定时，较高的峰值功率输入会在放大器输出端出现失真。而放大器（例如射频PA）工作在最大增益状态下往往效率不高，高增益与高效率是放大器设计的一对矛盾指标，本发明的通信终端300通过设置可变阻抗的放大器可有效的平衡高增益与低功率之间的矛盾。LTE adopts SC-FDMA technology and OFDMA technology in uplink transmission and downlink reception respectively. The signal peaks of these two debugging carrier technologies are relatively high, that is, when the average signal power is constant, the signal peak value is high, while PA and LNA have With a certain linearity and a certain maximum output power, higher peak power input will cause distortion at the output of the amplifier. However, the efficiency of amplifiers (such as radio frequency PAs) is often not high when they work in the state of maximum gain. High gain and high efficiency are a pair of contradictory indicators for amplifier design. The communication terminal 300 of the present invention can effectively balance high The tension between gain and low power.
综上所述，本发明通过在LTE通信发射系统及接收系统设置信号检测器，使其可以检测信号的峰值及平均功率，以获取该信号的峰均比。同时，系统的放大器的匹配负载均采用可变负载，其受控制器的控制。控制器通过信号峰均比判断出系统的工作状态，进而控制负载作相应的阻抗变化，以使信号能高质量及高效率的传输。To sum up, the present invention sets signal detectors in the LTE communication transmitting system and receiving system so that they can detect the peak value and average power of the signal, so as to obtain the peak-to-average ratio of the signal. At the same time, the matching loads of the amplifiers of the system all adopt variable loads, which are controlled by the controller. The controller judges the working state of the system through the peak-to-average ratio of the signal, and then controls the load to make corresponding impedance changes, so that the signal can be transmitted with high quality and high efficiency.
当然，本发明还可有其它多种实施例，在不背离本发明精神及其实质的情况下，熟悉本领域的技术人员当可根据本发明作出各种相应的改变和变形，但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310146792.9ACN103281278B (en) | 2013-04-24 | 2013-04-24 | LTE (Long Term Evolution) communication transmission system, LTE communication receiving system and communication terminal |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310146792.9ACN103281278B (en) | 2013-04-24 | 2013-04-24 | LTE (Long Term Evolution) communication transmission system, LTE communication receiving system and communication terminal |
| Publication Number | Publication Date |
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| CN103281278A CN103281278A (en) | 2013-09-04 |
| CN103281278Btrue CN103281278B (en) | 2017-03-22 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310146792.9AActiveCN103281278B (en) | 2013-04-24 | 2013-04-24 | LTE (Long Term Evolution) communication transmission system, LTE communication receiving system and communication terminal |
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