Title :
Design and Realization of Fast Code Acquisition for Long PN Code Spread Spectrum Communication in LEO Satellite
Author :
Yong, Chen ; Hang-sheng, Zhao
Author_Institution :
Nanjing Telecommun. Technol. Inst.
Abstract :
Based on the discrete-time signal processing, the representation of Doppler effect on code acquisition performance is analyzed and the principle of combining partial-matched filter with FFT is given in this paper. A fast code acquisition architecture by using partial-matched filter with FFT for the large Doppler offset frequency and long PN code spread spectrum communication system is designed and realized in FPGA and DSP. This architecture provides a very good trade-off between acquisition performance and complexity. Application results show this architecture is very attractive for LEO satellite communication
Keywords :
Doppler effect; code division multiple access; discrete time systems; fast Fourier transforms; matched filters; pseudonoise codes; satellite communication; signal detection; signal representation; spread spectrum communication; DSP; Doppler effect representation; Doppler offset frequency; FFT; FPGA; LEO satellite communication; code acquisition performance; discrete-time signal processing; fast Fourier transform; low earth orbit; partial-matched filter; pseudonoise code; spread spectrum communication system; Artificial satellites; Doppler effect; Field programmable gate arrays; Filters; Frequency; Low earth orbit satellites; Performance analysis; Signal analysis; Signal processing; Spread spectrum communication;
Conference_Titel :
Communications, Circuits and Systems Proceedings, 2006 International Conference on
Conference_Location :
Guilin
Print_ISBN :
0-7803-9584-0
Electronic_ISBN :
0-7803-9585-9
DOI :
10.1109/ICCCAS.2006.284853
