摘要
针对在非合作通信中无线信道下短消息侦测及接收的问题,提出了一种改进的盲均衡算法,该算法在T/4分数间隔恒模算法(T/4-FSE-CMA)的基础上引入了数据重用和变步长方法,数据重用可以大大减小收敛所需的码元数,而变步长能够进一步提高算法的精度。仿真结果表明,改进后的算法较现有的T/4-FSE-CMA算法和数据重用恒模算法有更快的收敛速度和更高的稳态精度,误码率也明显降低,具有很大的工程应用价值。
A new blind equalization algorithm is proposed for short message detection and reception in non-cooperative communication. Based on the T/4 fractionally-spaced constant modulus algorithm（T/4-FSE-CMA）, the new algorithm introduces data reuse method and variable step size idea. Data reusing can sharply reduce the number of symbol that need to converge. Variable step size can further improve the accuracy of the algorithm. Simulation results show, compared with T/4-FSE-CMA and Data Reuse CMA（DR-CMA）, the new algorithm has faster convergence speed and higher steady-state accuracy, as well as a lower BER. The new algorithm has great engineering application value.
出处
《计算机工程与应用》
CSCD
北大核心
2015年第22期95-98,共4页
Computer Engineering and Applications
基金
国家自然科学基金(No.61071088,No.61371107)
关键词
非合作通信
盲均衡
分数间隔
数据重用
变步长
non-cooperative communication
blind equalization
fractionally-spaced
data reuse
variable step size
