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Full-duplex relay cooperative communication system performance optimization method based on NOMA

A technology for cooperative communication and system performance, applied in duplex signal operation, transmission system, radio transmission system, etc., can solve the problem of low-end user rate reduction, achieve improved reachable rate, rate increase, and self-interference-to-noise ratio Effect

Active Publication Date: 2019-09-06
XIDIAN UNIV
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Problems solved by technology

[0004] To sum up, the problem existing in the existing technology is: the relay node in the traditional NOMA cooperative relay system only forwards a single decoded signal, resulting in a decrease in the rate of the near-end user

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  • Full-duplex relay cooperative communication system performance optimization method based on NOMA
  • Full-duplex relay cooperative communication system performance optimization method based on NOMA
  • Full-duplex relay cooperative communication system performance optimization method based on NOMA

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Embodiment Construction

[0034] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0035] In view of the traditional NOMA cooperative relay system, the relay node only forwards the decoded single signal, which causes the problem that the near-end user rate decreases. The present invention provides a performance optimization method for a non-orthogonal multiple-access full-duplex relay cooperative communication system, which can reduce the interruption probability of the system and increase the minimum reachable rate of the system, so as to improve the non-orthogonal multiple-access full-duplex relay The overall performance of the collaborative communication system.

[0036] The application principle of...

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Abstract

The invention belongs to the technical field of wireless mobile communication, and discloses a full-duplex relay cooperative communication system performance optimization method based on NOMA. The method comprises: a base station sending a superposition code to the relay node and the near-end user in a broadcast form; the relay node decoding the received signal and recoding and forwarding the received signal, and the relay node decoding signals of the near-end user and the far-end user from the received signal; the relay node recoding the decoded signal and broadcasting the coded mixed signalto a far-end user and a near-end user; the base station and the relay node pre-coding the signal in a maximum ratio transmission mode and sending the pre-coded signal to a near-end user; the near-enduser and the far-end user decoding the received signal; the near-end user decoding the received signal by adopting an SIC method; the far-end user directly decoding own signal; and minimizing the interruption probability of the system is minimized, and the minimum reachable rate of the system. According to the method, the rate of near-end users is improved, and the total reachable rate of the system is improved.

Description

Technical field [0001] The invention belongs to the technical field of wireless mobile communication, and in particular relates to a method for optimizing the performance of a full-duplex relay cooperative communication system based on NOMA. Background technique [0002] Currently, the closest existing technology: In view of the rapid development of Internet and Internet of Things services, the business demand for wireless communication is increasing. With the increasing number of mobile users, the improvement of spectrum efficiency has become an urgent problem to be solved. one. As the candidate multiple access technology for next-generation mobile communications, NOMA technology has attracted more and more attention. Unlike the previous Orthogonal Multiple Access (OMA) technology, it can only assign a single user Radio resources, for example, divided by frequency or divided by time. NOMA allows multiple users in the same cell to share the same channel resources at the same ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/155H04L5/14
CPCH04B7/15564H04B7/15592H04L5/14
Inventor 刘毅南海涵马莹杨普张阳阳张海林
Owner XIDIAN UNIV
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