Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2014, Vol. 37 ›› Issue (2): 68-73.doi: 10.13190/j.jbupt.2014.02.015

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A Multi-Relay Transmission Scheme Using Fountain Codes and Adaptive Modulation

LEI Wei-jia, GUO Xu-jing, WANG Huan-huan, XIE Xian-zhong   

  1. Key Laboratory of Mobile Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
  • Received:2013-07-01 Online:2014-04-28 Published:2014-04-08

Abstract:

A multi-relay transmission scheme using fountain codes and adaptive coding and modulation was proposed, also the corresponding multi-relay selection algorithm was proposed. First of all, the throughput of adaptive modulation with fountain codes was analyzed, the optimal modulation scheme was given in different SNR range, and the performance of adaptive modulation in fading channels was analyzed. Furthermore, fountain codes and adaptive modulation was applied in multi-relay transmission scheme, gave a relay selection algorithm, and the performance of transmission time and energy consumption for this scheme were analyzed in detail. At last, did the simulation. The result demonstrates that, comparing with other transmission schemes, this transmission scheme improves the data throughput obviously; decreases the transmission time.

Key words: cooperative relay, fountain codes, adaptive modulation and coding, Multi-relay selection

CLC Number: