摘要
为了有效地在分布式小区中使用循环延迟分集技术,文章首先得到了分布式环境下循环延迟分集的成对差错概率的上界。以最小化成对差错概率的上界为目标,提出了一种分布式环境下循环延迟分集的次优功率分配方案。仿真结果表明,通过对移动台位置信息的利用,得到其路径损耗信息,再结合次优功率分配方案,分布式小区中循环延迟分集的系统性能得到改善。
In order communication system （DWCS）, to apply Cyclic Delay Diversity （CDD） effectively in the distributed wireless the upper bound of pair-wise error probability（PEP） of CDD in DWCS is first obtained. Then a suboptimal power allocation algorithm for CDD in DWCS resulting from minimizing the upper bound of PEP is proposed. Numerical simulation results reveal that the system performance is significantly improved by utilizing the information of the location of the mobile station to get the propagation loss information and applying the suboptimal power allocation algorithm.
出处
《通信技术》
2009年第2期57-60,共4页
Communications Technology
基金
国家自然科学基金资助项目(60572066)。
