Title :
A modified Doppler corrected demodulation algorithm and its DSP implementation
Author :
Bo, Xu ; Pingyi, Fan ; Zhigang, Cao
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
The problem of Doppler frequency shift (DFS) correction is one of the most important problems in the digital mobile communications. This paper discusses the Doppler corrected demodulation algorithm proposed in Simon and Divsalar (1989), and modifies some parts of the algorithm concerning the hardware implementation; for example, the bandwidth of the receiver front filter, the method of DFS correction and the digital post-processing part, etc. The modified algorithm has been realized on the TMS320C50 developing board. The results of hardware experiments and computer simulations have shown that our modified algorithm is effective
Keywords :
Doppler effect; Doppler shift; FIR filters; digital radio; land mobile radio; quadrature phase shift keying; radio receivers; signal processing; DFS correction; DSP implementation; Doppler frequency shift correction; TMS320C50 developing board; bandwidth; digital mobile communications; digital post-processing; modified Doppler corrected demodulation algorithm; receiver front filter; Bandwidth; Degradation; Demodulation; Detectors; Digital signal processing; Filters; Hardware; Mobile communication; Phase detection; Robustness;
Conference_Titel :
Signal Processing, 1996., 3rd International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-2912-0
DOI :
10.1109/ICSIGP.1996.567346
