A beamforming antenna selection grouping algorithm joint design optimization method
A beamforming and optimization method technology, applied in the field of beamforming antenna selection and grouping algorithm joint design optimization, can solve the problems of increased computational complexity, influence of signal-to-interference noise ratio, and high requirements of receiver hardware, and achieves system throughput and Computational complexity improvement, low complexity, effect of improving system and throughput
Active Publication Date: 2021-02-02
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology
However, this solution has high requirements on the receiver hardware and introduces extra noise during the power splitting process, which affects the signal-to-interference-noise ratio
There is little research on antenna selection algorithms, and although the ergodic antenna selection algorithm has good performance, the computational complexity increases exponentially with the increase in the number of antennas
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[0099] The present invention considers that in an FD-SWIPT two-way relay system, the relay has multiple transmitting and receiving antennas, and joint optimization is performed through antenna selection and beamforming to achieve maximum system throughput and improve energy efficiency. For this reason, a low-complexity antenna grouping strategy for the relay receiving end is proposed, and the signals received by the antennas with good channel conditions are forwarded in the next step, while the remaining received signals with slightly poor channel conditions are energy harvested and forwarded to the relay end. The information provides energy; at the same time, the beamforming vector of the relay sending end is designed to optimize the receiving signal-to-noise ratio from the relay end to the destination end.
[0100] The antenna selection and beamforming joint optimization method proposed by the present invention includes the following steps:
[0101] Step 1. First, enumerate ...
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The invention relates to a beam forming and antenna selection grouping algorithm joint design optimization method, and belongs to the technical field of wireless communication. The method comprises the following steps that 1, expressions of various node receiver and node senders in the application scene are enumerated one by one, and elements directly related to a throughput expression are found out; 2, it is supposed that antenna groups are fixed, optimal beam forming vectors for a source node A and a source node B are solved by adopting a maximum generalized eigenvalue respectively, and an optimal beam forming vector of an overall system is obtained by means of a vector mapping theorem; and 3, antenna grouping scheme calculation is conducted according to the optimal beam forming vector to obtain the optimal system and throughput. According to the method, studying on the antenna selection and beam forming joint optimization based on the full-duplex bidirectional MIMO relay system is considered, and the system and the throughput are improved maximally.
Description
technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a joint design and optimization method of beamforming antenna selection and grouping algorithms. Background technique [0002] At present, full-duplex technology and wireless information and energy simultaneous transmission technology are emerging new communication technologies with good application prospects, but the system model selected by most researches involving full-duplex information and energy simultaneous transmission research The application scenarios are point-to-point transmission or one-way relay transmission. In reality, information transmission is a process of exchange, so the two-way relay system is more suitable for practical applications; however, in the research on the FD-SWIPT two-way relay system, The industry focuses on studying the TS protocol and the PS protocol. [0003] Literature [Liu H, Kyeong J, Kyung S, et al. Power Splitting-Based SWI...
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IPC IPC(8): H04B7/0413H04B7/0456H04B7/06H04B7/08
CPCH04B7/0413H04B7/0456H04B7/0617H04B7/0802
Inventor 谢显中扶渝茜
Owner CHONGQING UNIV OF POSTS & TELECOMM