基于维特比算法解调GMSK信号分析

Demodulation GMSK Signal Analysis Based on Viterbi Algorithm

文中介绍了二进制GMSK信号带宽占用率、数据预编码方案和利用维特比算法相干解调二进制GMSK信号的调制解调方法，给出了不同BT乘积情况下解析功率谱密度和模拟误码率结果，定量分析了邻信道干扰结果。结果说明，利用维特比算法解调4GMSK信号可以在满足接收机性能的基础上简化设计。

In this paper, a binary GMSK signal bandwidth occupancy rate, data pre-coding scheme anti modulation and demodulation method by using Viterbi algorithm to coherent demodulation binary signal were introduced. The power spectral density analysis and Bit Error Rate simulation results in the condition of different BT product were given. And the adjacent channel interference results were quantitatively analyzed. Results show the use of Viterbi algorithm to GMSK signal demodulator can simplify design on the basis of meeting the receiver performance.