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| Design and Realization of Fast Code Acquisition for the Large Doppler Offset and Long PN Code Spread Spectrum System |
| Chen Yong; Zhao Hang-sheng |
| The 63rd Research Institute of PLA GSH, Nanjing 210007, China |
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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 and long PN code spread spectrum system is designed and realized with 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 mobile satellite communication and DS/SS anti-jamming communication.
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Received: 01 March 2006
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2007, Vol. 29 
