FPGA Implementation of PN Code Acquisition Based on Software Radio

Spread spectrum technology can effectively solve the problems such as bad channel environment, multi-path fading etc between mobile station and subscribers. At present the research on the synchronization of PN code is more concentrated on how to implement fast acquisition. This paper introduces the sliding correlation method of PN code acquisition, gives out a serial and parallel acquisition method which is suitable for the mobile communication, and designs circuit under electronic design software Quartus II using VHDL. At last the accuracy of this method was verified on FPGA.

[1]  J. T. Harvey.  High-speed m sequence generation , 1974 .

[2]  W. Jones,et al.  Performance of a parallel time-frequency direct sequence spread-spectrum acquisition scheme , 1990, IEEE Conference on Military Communications.

[3]  F.L.A.J. Kamperman.  Design of an all digital direct-sequence spread-spectrum receiver , 1994, 5th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Wireless Networks - Catching the Mobile Future..

[4]  Li Junyi,et al.  Software radio technology in spread spectrum communication , 2000, WCC 2000 - ICCT 2000. 2000 International Conference on Communication Technology Proceedings (Cat. No.00EX420).

[5]  Yang Shi-zhong,et al.  The design and FPGA realization of the long PN code acquisition circuit based on digital matched-filter , 2003, ASICON 2003.