半导体光子学与技术, 2006, 12 (2): 126, 网络出版: 2011-08-18
All-digital Carrier Frequency Tracking Method in LEO DS/SS Communication
All-digital Carrier Frequency Tracking Method in LEO DS/SS Communication
摘要
Abstract
An efficient method to track the carrier frequency which is recommended to use in low earth orbit(LEO) direct-sequence spread-spectrum(DS/SS) communication system is given. The carrier frequency drifts quicker in LEO DS/SS communication system, its tracking problem becomes much more important especially in digital receiver with the limits of physical shape and power. Under the condition of coarse carrier frequency synchronization, a digital tracking method based on least square method(LSM) is proved to be a quick, simple and efficient method. Numerical results and charts are given.
XING Ke-fei, YANG Jun, ZHANG Chuan-sheng, WANG Yue-ke. All-digital Carrier Frequency Tracking Method in LEO DS/SS Communication[J]. 半导体光子学与技术, 2006, 12(2): 126. XING Ke-fei, YANG Jun, ZHANG Chuan-sheng, WANG Yue-ke. All-digital Carrier Frequency Tracking Method in LEO DS/SS Communication[J]. Semiconductor Photonics and Technology, 2006, 12(2): 126.