摘要
提出一种基于输出解相关的分数间隔直接盲均衡算法。该算法基于过采样接收信号或多传感器接收信号产生的分数间隔单输入多输出线性信道模型,利用均衡器输出的解相关特性和二阶统计量来直接估计均衡器,不需要预先估计信道冲激响应,可直接估计任意延迟的均衡器系数。该算法与传统的基于二阶矩的两步均衡算法相比,计算简单,精度高。仿真结果表明,该算法具有很好的均衡效果。
Blind fractionally spaced equalizer can reduce intersymbol interference using secondorder statistics. A direct blind equalization algorithm for fractionally spaced linear discrete single-input and more-output channel is proposed. The algorithm estimates directly equalizers with all possible delays, which need not to pre-estimate the channel impulse response, by channel output decorrelation characteristics and second-order statistics of the received signals. The algorithm has less computation process and higher computation precision than the traditional blind equalization method based on second-order statistics. Simulation results show that the algorithm has a good equalization performance.
出处
《数据采集与处理》
CSCD
北大核心
2005年第3期323-327,共5页
Journal of Data Acquisition and Processing
关键词
码间干扰
盲均衡
二阶统计量
分数间隔系统
intersymbol interference
blind equalization
second-order statistics
fractionally spaced system
