Affiliation of Author(s):电子信息工程学院

Journal:KSII TRANSACTIONS ON INTERNET AND INFORMATION SYSTEMS

Key Words:compress-and-forward multi-relay amplify-and-forward the CEO problem SNR power allocation

Abstract:A novel distributed compress-and-forward (CF) system based on multi-relay network is presented. In this system, as the direct link between the source and destination is invalid due to some reasons, such as the limited power, special working environment, or even economic factors, relays are employed to receive analog signals and carry on distributed compressed encoding. Subsequently, the digital signals are transmitted to the destination via wireless channel Moreover, a theoretical analysis for the system is provided by utilizing the Chief Executive Officer (CEO) theory and Shannon channel capacity theory, and the rate-distortion function as well as the connection between the transmission rate and the channel capacity are constructed. In addition, an optimal signal-to-noise ratio (SNR) -based power allocation method is proposed to maximize the quantization SNR under the limited total power. Simulation result shows that the proposed CF system outperforms the amplify-and-forward (AF) system versus the SNR performance.

ISSN No.:1976-7277

Translation or Not:no

Date of Publication:2019-06-30

Co-author:Dazhuan Xu,Luo, Hao,Zhang, Ruidan

Correspondence Author:Dazhuan Xu,broadenway