Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2012, Vol. 35 ›› Issue (4): 51-54.doi: 10.13190/jbupt.201204.51.liaoy

• Papers • Previous Articles     Next Articles

Statistic Guarantees of QoS in Wireless Asymmetric Relay Networks

LIAO Yong1,2,YANG Shi-zhong1,PENG Xiao-qin1,YANG Hong1,ZHANG Lei3   

  1. (1Key Laboratory of Aerocraft Tracking Telemetering and Command and Communication, Ministry of Education, Chongqing University 2The State Key Laboratory of Integrated Services Networks, Xidian University3College of Communication Engineering
  • Received:2011-07-29 Revised:2012-04-01 Online:2012-08-28 Published:2012-07-08

Abstract:

Aiming that the optimal solution of dynamic resource allocation in relay networks is still incomplete, and combining the information theory with effective capacity, an optimal solution of dynamic resource allocation in estimateandforward (EF) relay networks is given independently. Moreover, setting the typical network as an example, a selfadaptive relay networks scheme based on dynamic resource allocation is put forward. A dynamic choice can be availed within three relay protocols, that can be depicted as amplifyandforward (AF), decodeandforward (DF) and EF according to the system QoS exponent requirement. Numerical simulation indicates that the dynamic resource allocation scheme can effectively maximize the effective capacity of relay networks under the limitation of system QoS exponent. Furthermore, the selfadaptive relay network scheme can improve a much better throughput performance than the traditional monorelay scheme.

Key words: cooperative relay networks, QoS, effective capacity, power allocation, convex optimization

CLC Number: