Modulation and Demodulation Method for CDMA Communication System Based on Polyphase Orthogonal Sequence

Author

Chen, Lei ; Guo, Yanju ; Jia, Zhicheng

Author_Institution

Sch. of Inf. Eng., Tianjin Univ. of Commerce, Tianjin

fYear

2007

fDate

21-25 Sept. 2007

Firstpage

950

Lastpage

953

Abstract

In this paper, an new modulation and demodulation method for polyphase orthogonal sequences is given and the correlation receiving property and anti-MAI property for this method are analyzed thoroughly. The CDMA system with polyphase orthogonal sequence using the modulation and demodulation method we proposed on Rayleigh Fading channel has been simulated and the BER has been got. The result shows that the performance of CDMA system based on polyphase orthogonal sequence to restrain multiple access interference is better than the CDMA system based on duality sequence.

Keywords

Rayleigh channels; code division multiple access; demodulation; error statistics; modulation; orthogonal codes; radiofrequency interference; sequential codes; BER; CDMA communication system; Rayleigh fading channel; bit error rate; demodulation method; modulation method; multiple access interference; polyphase orthogonal sequence; Bit error rate; Business; Demodulation; Fading; Information analysis; Joining processes; Modulation coding; Multiaccess communication; Multiple access interference; Spread spectrum communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-1311-9

Type

conf

DOI

10.1109/WICOM.2007.244

Filename

4340019