论文部分内容阅读
本文分析了在数字移动通信中检波后等增益分集合并的高斯最小频移键控(GMSK)二比特差分检测的抗衰落抗同频道干扰性能。利用对特征函数求留数的方法,导出了GMSK二比特差分检测的平均误码率公式的简单表达式和采用L重分集合并技术的平均误码率公式的封闭形式。结果表明,采用检波后等增益分集合并技术的GMSK二比特差分检测系统具有简单、信号频谱窄、邻道干扰小、抗衰落抗同频道干扰性能好的特点。
This paper analyzes the anti-fading anti-co-channel interference performance of Gaussian minimum shift keying (GMSK) two-bit differential detection with equal diversity gain after detection in digital mobile communications. By using the method of seeking the number of eigenvalues, a simple expression of the average error rate formula of GMSK two-bit differential detection and the closed form of the average error rate formula of L-multipath combining technique are derived. The results show that GMSK two-bit differential detection system with equal gain diversity detection after detection is simple, narrow signal spectrum, small adjacent channel interference and good anti-fading and anti-co-channel interference performance.