中继网络中基于有限反馈的自适应多播资源分配

提出了多播中继网络中基于有限反馈的自适应子载波和功率分配策略.根据新的反馈算法和传输协议确定每个多播组的传输模式;又提出“公平子载波分配”策略,达到了公平性和服务质量的折中，最后根据新的“协作功率迭代(CFI)”策略完成了有效的功率分配，该CFI策略先利用注水定理确定每个子载波的目标速率，然后通过一个功率迭代过程实现了功率最佳化.仿真结果显示新的多播策略大大降低了上行反馈开销且所需功率和多播业务中断概率远远小于直传策略.

A Limited Feedback for Relay Networks Based Adaptive Multicast Resource Allocation Scheme

An adaptive subcarrier and power allocation scheme based on limited feedback for multicast relay networks is proposed.The new scheme works in three steps.Firstly,transfer mode of each multicast group is determined using a new feedback algorithm and transfer protocol.Secondly,a fair subcarrier allocation scheme is proposed to achieve a tradeoff between fairness and quality-of-service.Finally,a new cooperative power iterative scheme is introduced to allocate power effectively,where target rate on each subcarr...