关键词: 协同中继网络, 服务质量, 有效容量, 功率分配, 凸优化

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