Power distribution method of hardware damage large-scale MIMO bidirectional relay system under MR preprocessing

A two-way relay, large-scale technology, applied in the transmission system, radio transmission system, electrical components, etc., can solve the problems of power allocation of two-way multi-pair large-scale MIMO relay system to be studied, hardware damage and other problems, to achieve easy access , strong applicability, simple effect

Active Publication Date: 2019-03-15
HENAN POLYTECHNIC UNIV
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Problems solved by technology

Under NLOS and line-of-sights (LOS) fading environment, the problem of power allocation in hardware-impaired two-way multi-pair massive MIMO relay system needs to be studied

Method used

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  • Power distribution method of hardware damage large-scale MIMO bidirectional relay system under MR preprocessing
  • Power distribution method of hardware damage large-scale MIMO bidirectional relay system under MR preprocessing
  • Power distribution method of hardware damage large-scale MIMO bidirectional relay system under MR preprocessing

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Embodiment Construction

[0037] In order to illustrate the technical methods in the examples of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0038] The multi-pair two-way massive MIMO cooperative relay system model of this example is as follows: figure 1 As shown, it includes an M-antenna massive MIMO relay, N pairs of single-antenna users, and the users are randomly distributed on both sides of the massive MIMO relay, M>>2N, where and For two-way users exchanging information, T R For massive MIMO relay, and It is a multiple access channel from two-way users to relays, similarly and Broadcast channel for relaying to two-way users. The massive MIMO relay calculates the statistical information of the estimated channel, and two-way users exchange their information through the MR base station according to the estimated information.

[0039] In practical communication systems, the Rice facto...

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Abstract

The invention discloses a power distribution method of a hardware damage large-scale MIMO bidirectional relay system under MR preprocessing, which is used for distributing power for each user and a large-scale MIMO relay to maximize system spectrum efficiency. The method comprises the following steps: 1, by the hardware damage large-scale MIMO bidirectional relay, receiving a pilot channel sent bya bidirectional user, and obtaining an estimated channel matrix; 2, according to estimated channel information, the number of users and the number of base station antennae, calculating an uplink MRCreceiving detection and downlink MRT precoding matrix; 3, according to limit of system total power, building a non-convexity optimization function for maximizing the spectrum efficiency, and converting the non-convex optimization function into a convex optimization function; 4, according to the convex optimization function, calculating distribution power of each user and the large-scale MIMO relay. The method considers large-scale MIMO hardware damage and LOS/NLOS fading environment, and can provide a power distribution scheme for the user and the large-scale MIMO relay more rationally.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a power allocation method for a massive MIMO two-way relay system with hardware damage under MR preprocessing. Background technique [0002] With the massive increase of mobile smart terminals, the volume of data traffic will increase exponentially in the next ten years; the energy consumption brought by massive smart terminals will put enormous pressure on the environment. Mobile urgent problems. Facing the above problems, the Time Division Duplexing (TDD) massive MIMO system obtains huge diversity gain, multiplexing gain and array gain by deeply mining airspace resources, which greatly improves the system spectrum efficiency and energy efficiency, and becomes the future One of the breakthrough technologies of 5G mobile communication. Large-scale multiple-input multiple-output (MIMO) deploys a large number of low-cost antennas at the base station to serve a rela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0426H04B7/155H04W72/04
CPCH04B7/0426H04B7/155H04W72/0473Y02D30/70
Inventor 李兴旺张延良乔大伟邓超陈慧
Owner HENAN POLYTECHNIC UNIV
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