摘要
针对正交频分复用(OFDM)系统的比特、功率分配问题,提出一种功率相对较小的分配方案,文中根据实际信道的情况,采取子载波分组、多比特同时分配的方法使算法的计算量大大降低。仿真结果表明,文中提出的方法是一种快速而灵活的自适应资源分配方案。
A new bit, power allocation scheme for OFDM system is proposed, for the to purpose of fairly minimizing the total power. In this paper, the sub-carriers are divided into groups based on channel status, and in these groups more than one bits are allocated every time. This method reduces the computational complexity greatly. Simulation result shows that the proposed method is a fast and flexible scheme for adaptive resourceallocation.
出处
《通信技术》
2008年第12期117-119,共3页
Communications Technology
关键词
OFDM
无线通信
自适应资源分配
OFDM
wireless communication： adaptive resource allocation
