摘要
将频域迭代均衡算法应用于高阶调制的单载波系统,提出了比特软信息与符号软信息互换的算法,从而在较高的带宽利用率和较低复杂度的条件下提高了系统的整体性能。仿真表明该算法适用于高阶调制方式,具有BER性能好、迭代增益明显的优点。
The frequency domain Turbo equalization is applied to single-carrier wireless systems using high-order modulation,and an algorithm is proposed to convert the decoder A posteriori LLRs into symbols and a method to generate bit metric by using LLRs. Simulation results indicate that the proposed approach has significant BER performance and complexity advantage,thus improving the performance of the whole system with high bandwidth utilization.
出处
《通信技术》
2009年第12期60-63,共4页
Communications Technology
基金
863计划资助项目(2007AA01Z237)
关键词
单载波
频域迭代均衡
高阶调制
高带宽利用率
single-carrier
frequency domain turbo equalization
high-order modulation
high bandwidth utilization
