Method for maximizing throughput of swipt multi-relay communication system based on hybrid fronthaul protocol
A relay communication and throughput technology, applied in transmission systems, radio transmission systems, electrical components, etc., can solve the problems of not considering the battery energy replenishment of relay nodes, poor relay endurance, and poor channel adaptability.
Active Publication Date: 2021-05-14
SOUTH CHINA UNIV OF TECH
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Among them, He Chen and Ju Liu proposed in the paper "Performance Analysis of SNR-Based Hybrid Decode-Amplify-Forward Cooperative Diversity Networks over Rayleigh Fading Channels" to select relay nodes by comparing the signal-to-noise ratio of relay nodes with the specified threshold The method of forwarding protocol, but this method studies the traditional relay system, and does not consider the problem of using SWITP technology to supplement the energy of the relay node battery, and the endurance of the relay is poor
In the paper "WirelessInformation and Power Transfer for Multirelay-Assisted Cooperative Communication", Yuan Liu proposed an optimal power split method between relay node information decoding and energy harvesting in a multi-relay SWITP cooperative communication system, but all relay nodes of this method All adopt the same AF or DF protocol, which is less adaptable to the channel
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[0033] This embodiment discloses a method for maximizing the throughput of a SWIPT multi-relay communication system based on a hybrid fronthaul protocol. Each relay node performs information decoding and energy collection in turn by switching time slots, and selects different relay nodes according to the characteristics of their respective channels. Forwarding protocol: Through the joint optimization of the time slot switching factor and the relay forwarding protocol selection factor, the throughput of the SWIPT multi-relay communication system is maximized.
[0034] The SWIPT multi-relay communication system of the present embodiment is as figure 1 As shown, the relay node time slot switching is as follows figure 2 As shown, the implementation process is as follows image 3 As shown, the joint optimization process of relay forwarding protocol selection factor and time slot switching factor is as follows: Figure 4 shown.
[0035] In this embodiment, considering that all n...
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The invention discloses a method for maximizing the throughput of a SWIPT multi-relay communication system based on a hybrid fronthaul protocol. Each relay node performs information decoding and energy collection in turn by switching time slots, and selects different forwarding methods according to the characteristics of their respective channels. Protocol; Through the joint optimization of the time slot switching factor and the relay forwarding protocol selection factor, the throughput of the system is maximized. The relay node of the multi-relay communication system in the present invention adopts the technology of combining the hybrid forwarding protocol and SWIPT, while strengthening the battery life of the relay node, the adaptability to the channel is enhanced; the selection factor of the relay forwarding protocol is The joint optimization with the time slot switching factor realizes the optimal selection of the forwarding protocol of the relay node and the optimal allocation of resources between energy collection and information decoding, and improves the throughput of the system.
Description
technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a throughput maximization method of a wireless information and power transfer (simultaneously wireless information and power transfer, SWIPT) multi-relay cooperative communication system based on a hybrid fronthaul protocol. Background technique [0002] Cooperative communication is a technology that utilizes relays for cooperative transmission. Through cooperation and antenna sharing between users, cooperative communication not only expands the coverage of system communication, but also enables terminals to obtain diversity gain, thereby improving system capacity, reliability and energy efficiency. In the cooperative communication system, multiple relay nodes participate in the cooperation at the same time, which can further improve the system performance. In a multi-relay cooperative communication system, which forwarding protocol the relay adopts is the...
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IPC IPC(8): H04B7/155
CPCH04B7/15542H04B7/15557
Inventor 冯义志周忠建张军季飞傅娟
Owner SOUTH CHINA UNIV OF TECH