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Full duplex relay beam forming optimization method taking transmitting signal distortion into consideration

A technology of beamforming and transmitting signals, which is applied in the field of beamforming optimization of full-duplex multi-antenna relay systems, can solve problems such as reducing the actual performance of the system, achieve significant rate gains, facilitate engineering implementation, and maximize system transmission speed effect

Active Publication Date: 2017-08-04
SOUTHEAST UNIV
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Problems solved by technology

Ignoring the distorted signal will reduce the actual performance of the system, so it is necessary to consider the distortion of the signal in the optimization

Method used

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  • Full duplex relay beam forming optimization method taking transmitting signal distortion into consideration
  • Full duplex relay beam forming optimization method taking transmitting signal distortion into consideration
  • Full duplex relay beam forming optimization method taking transmitting signal distortion into consideration

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Embodiment Construction

[0028] The technical solution will be described in detail below through a preferred embodiment and in conjunction with the accompanying drawings.

[0029] A typical application scenario of the present invention is a full-duplex multi-antenna relay system with distorted transmitting signals. By performing beamforming iterative optimization on the transmitting end and receiving end of the relay, the transmission rate of the system can be optimized, such as figure 1 As shown, the embodiment of the present invention discloses a full-duplex relay beamforming optimization method considering the distortion of the transmitted signal, and the specific steps are as follows:

[0030] (1) The beamforming vector w at the receiving end of the fixed relay r , for the beamforming vector w at the relay transmitter t optimize;

[0031] In this step, the relay transmits the beamforming vector w t The determination method is:

[0032] Solve the following optimization problem:

[0033] The op...

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Abstract

The invention discloses a full duplex relay beam forming optimization method taking transmitting signal distortion into consideration. The method is applied to a full duplex multi-antenna decoding forwarding relay system with transmitting signal distortion. Through adoption of an iterative optimization method, beam forming vectors of a relay transmitting end and receiving end are optimized, so a transmitting rate of the system is maximized. According to the method, the transmitting rate of the system when the transmitting signal distortion exists can be effectively improved, the computing complexity is relatively low, and the method is beneficial for engineering realization.

Description

technical field [0001] The invention relates to a relay communication system, in particular to a beamforming optimization method of a full-duplex multi-antenna relay system considering the distortion of transmitted signals. Background technique [0002] Wireless communication plays a very important role in people's life. In recent years, the increase in the number of users has resulted in a high demand for communication resources such as bandwidth and energy. According to information theory, the channel capacity will increase approximately linearly with the minimum number of transmitting and receiving antennas. The more antennas, the more obvious the increase in spectral efficiency and reliability. Full-duplex technology enables communication devices not only to send signals, but also to receive signals, which greatly improves the transmission rate compared to the half-duplex working mode. The cooperative use of full-duplex and multiple antennas can improve the efficiency o...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04B7/08H04B7/155
CPCH04B7/0617H04B7/086H04B7/15528
Inventor 沈弘刘赐翀赵春明
Owner SOUTHEAST UNIV
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