一种自适应高动态GMSK信号相干解调算法  

An Adaptive Coherent Demodulation Algorithm for High Dynamic GMSK Signal

作　　者：穆巍炜 王冲[2] 唐然[2] 刘兵[2] 马肖旭 赵迎新[2] 刘之洋[2] 吴虹[2] Mu Weiwei;Wang Chong;Tang Ran;Liu Bing;Ma Xiaoxu;Zhao Yingxin;Liu Zhiyang;Wu Hong(Military Transportation Institute,Army Military Transportation University,Tianjin 300016,China;Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology,College of Electronic Information and Optical Engineering,Nankai University,Tianjin 300350,China)

机构地区：[1]陆军军事交通学院军事交通运输研究所,天津300016 [2]南开大学电子信息与光学工程学院,天津市光电传感器与传感网络技术重点实验室,天津300350

出　　处：《南开大学学报（自然科学版）》2019年第5期27-32,共6页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：国家自然科学基金(61571244);国家自然科学基金青年项目(61501262);天津市科技计划项目(16YFZCSF00540)

摘　　要：针对最大加速度为20 g的高斯最小频移键控(GMSK)高动态调制信号解调技术展开研究.研究了高动态GMSK信号的捕获和跟踪技术,得到高动态环境下GMSK信号的相干解调门限和误码率性能.结果表明,最大加速度20 g、符号速率8 k波特、帧长4 192 bit条件下,Ecn0≥2 dB时可闭环锁相工作,相比无动态GMSK信号解调性能恶化约0.4-0.6 d B.随着符号速率的上升,高动态带来的性能恶化会减小.The Gaussian Minimum Shift Keying(GMSK) high dynamic modulation signal demodulation technique is studied for the maximum acceleration of 20 g. The acquisition and tracking of high dynamic GMSK signals are studied, and the coherent demodulation threshold and bit error rate performance of GMSK signals in high dynamic environment are obtained. The results show that the closed-loop phaselocked operation can be performed under the conditions of maximum acceleration 20 g, symbol rate 8 k baud, frame length 4 192 bits, Ecn0≥2 dB. Compared with no dynamic GMSK signal,the demodulation performance deteriorates by about 0.4-0.6 dB.

关 键 词：高动态 高斯最小频移键控 解调 

分 类 号：TN929.5[电子电信—通信与信息系统]