Title :
A novel QAM joint frequency-phase carrier recovery method
Author :
Liu, Qijia ; Yang, Zhixing ; Song, Jian ; Pan, Changyong
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing
Abstract :
In this paper, we propose a novel structure of the joint frequency-phase carrier recovery loop for all-digital QAM satellite receivers. Unlike the existing methods, the initial phase offset is recovered through the utilization of a frequency recovery loop. By introducing a non-zero-mean input to the stop-and-go controller, the steady-state estimation variance is greatly reduced. This method is especially useful in the low SNR region
Keywords :
quadrature amplitude modulation; radio receivers; satellite communication; all-digital QAM satellite receivers; frequency recovery loop; frequency-phase carrier recovery method; nonzero-mean input; steady-state estimation variance; stop-and-go controller; AWGN; Additive white noise; Baseband; Frequency estimation; Frequency locked loops; Gaussian noise; Phase locked loops; Quadrature amplitude modulation; Satellite broadcasting; Steady-state; Carrier Recovery; Quadrature-Amplitude-Modulation (QAM); Stop and Go (S&G);
Conference_Titel :
Advanced Communication Technology, 2006. ICACT 2006. The 8th International Conference
Conference_Location :
Phoenix Park
Print_ISBN :
89-5519-129-4
DOI :
10.1109/ICACT.2006.206297
