Intelligent reflector-assisted non-orthogonal multiple access communication system and optimization method thereof

A non-orthogonal multiple access, communication system technology, applied in the field of communication systems with intelligent reflector assisted non-orthogonal multiple access, can solve problems such as low system throughput, and achieve the goal of improving spectrum efficiency and increasing system throughput. Effect

Active Publication Date: 2021-08-06
GUANGDONG UNIV OF TECH
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Problems solved by technology

The implementation of the scheme is simple, and it can be proved that compared with the traditional NOMA without reflective surface and the Orthogonal Multiple Access (OMA) system, the invention has strong application value, but there is a defect that the system throughput is small

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  • Intelligent reflector-assisted non-orthogonal multiple access communication system and optimization method thereof
  • Intelligent reflector-assisted non-orthogonal multiple access communication system and optimization method thereof
  • Intelligent reflector-assisted non-orthogonal multiple access communication system and optimization method thereof

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[0019] Below in conjunction with the accompanying drawings and examples, the specific implementation of the present invention will be described in further detail; the following examples are used to illustrate the present invention, but not to limit the scope of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying Describes, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate in a specific orientation, and therefore should not be construed as...

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Abstract

The invention relates to the technical field of wireless communication, and provides an intelligent reflector-assisted non-orthogonal multiple access communication system and an optimization method thereof, and the optimization method comprises the following steps: S1, employing an alternate optimization method to optimize a reflection coefficient matrix phi, a decoding error probability epsilon and a power optimal value P *; S2, utilizing the optimized reflection coefficient matrix phi, the decoding error probability epsilon and the optimal power value P * to calculate the system throughput T; S3, judging whether the change rate of the system throughput T is smaller than a difference threshold value epsilon or not; if not, skipping to execute the step S1; if yes, obtaining the maximum system throughput T. According to the method, under the intelligent reflecting surface assisted non-orthogonal multiple access ultra-reliable low-delay communication, the information transmission power, the decoding error probability and the reflection coefficient matrix are jointly optimized, the optimization design of the reflection coefficient matrix is mainly concerned, the spectrum efficiency is improved, and the system throughput is increased.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a communication system for non-orthogonal multiple access assisted by an intelligent reflection surface and an optimization method thereof. Background technique [0002] At present, ultra-reliable and low-latency communication, as a key technology of 5G, has received great attention in recent years. The main challenge is to achieve reliable communication and meet the strict delay requirements. In order to reduce the communication delay, ultra-reliable low-latency communication generally uses limited data packet length communication, and the Shannon formula is no longer applicable, which also creates challenges for research. Non-orthogonal multiple access communication is a potential multiple access technology to reduce the communication delay of multi-user terminals. The combination of non-orthogonal multiple access communication and ultra-reliable low-latency comm...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02
CPCH04W24/02Y02D30/70
Inventor 张广驰张璨崔苗刘圣海王昆武庆庆
Owner GUANGDONG UNIV OF TECH
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