一种优化的MMSE码元数字解调判决算法

An Optimized Judgment Algorithm of Code Digital Demodulation Based on MMSE Theory

根据最小均方误差原理,对数字通信系统中获得码元同步的信号提出了一种码元判决算法,并对其进行了优化.此算法在信噪比很低的情况下,能很好地还原出原数字信号,具有高保真与强抗噪性能,且运算量小,易于高速单片机及DSP实现.以ATMEL公司AVR单片机ATMEGA16L芯片为例,给出了优化前后的算法运行时间.

Based on MMSE theory, this paper presents and optimizes a new code judgment algorithm of code synchronization signals in digital communication system, which can detect digital signal in low SNR, with high fidelity and better noise robust, and can be realized in high speed MCU and DSP with less time calculation. This paper also gives the execution time of pre-optimized and optimized algorithm with AVR single-chip processor and ATMEGA 16L of ATMEL Corporation as instances.