A Design Method of Symbiotic Radio Network Based on Non-orthogonal Multiple Access Technology

Abstract

The invention belongs to the technical field of wireless communication, and in particular relates to a design method of a symbiotic radio network based on non-orthogonal multiple access technology. The present invention first estimates the energy of all BD radiation signals, and then uses the high-energy priority matching criterion to cluster the BDs; when transmitting data, NOMA is used in the cluster, that is, all BDs in the cluster can be simultaneously performed in the corresponding time slot For data transmission, TDMA is used between different clusters, that is, only one cluster is allowed to work in each time slot; in addition, an energy absorption method based on cluster mutual energy supply is proposed, that is, for BDs in other clusters, not only can Absorbing energy from the main signal transmitted by the base station can also absorb energy from the signal reflected by the currently transmitting cluster. The advantage of the present invention is that, under the premise of ensuring low power consumption and high spectrum utilization rate, the system performance is improved to a certain extent compared with the performance of the communication system using the traditional transmission protocol.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a design method of a symbiotic radio network (SRN) based on non-orthogonal multiple access (NOMA). Background technique [0002] In recent years, with the explosive growth of data in the information age, the Internet of Things (IoT) industry has been greatly developed, and the use of large-scale Internet of Things has become more and more frequent. In the large-scale Internet of Things, there are new and higher requirements for precious resources such as energy and spectrum. However, traditional wireless communication networks generally have problems such as insufficient energy supply and low spectrum utilization, which slows down the development of the Internet of Things industry to a certain extent, making the development of the Internet of Things industry encounter unprecedented bottlenecks. Therefore, it is imminent to introduce technologies with l...

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Problems solved by technology

[0004] Aiming at the problems of insufficient energy supply and low spectrum utilization in the existing Internet of Things, the present invention combines SR and NOMA technologies to design a symbiotic radio communication network based on non-orthogonal multiple access technology, and considers the transmission power of the base station (transmit power), BD energy reflection coefficients (power reflection coefficients) and transmission time slot length (time slot duration) to optimize the overall system performance

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