摘要
副本相关积分器(replicacorrelationintegrator,RCI)是时间扩展信道的最佳似然比检测器。重点研究RCI在高速信号处理芯片ADSP21160上的实时实现。首先从系统的要求出发,给出了用实数实现复数副本相关的方法。推导了RCI的递推算法,使其实时实现成为可能。通过比较Matlab和递推算法的结果可以看出,递推算法在减小计算量的同时保证了计算精度。
Replica correlation integrator(RCI) is an optimal detector of TSD (time spreading distortion) channel. The RCI on high-speed-signal-processing chip, ADSP21160 is realized emphatically. For requir ment of ADSP21160, a method is proposed for calculating replica correlation of complex number by using those of real number. Then we derive the recursive algorithm of RCI and make it possible to be realized in real-time. Simulation results show preliminarily that the recursive algorithm ensures accuracy as well decreasing calculation time.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2004年第4期493-496,共4页
Systems Engineering and Electronics
