Performance Evaluation of Pseudo-Code of Multi-user Environment CDMA Technology

Author

Mamun, Md Al ; Hossain, Md Mosharaf ; Alam, Md Zahangir ; Zaman, Md Shahid Uz ; Ahmmed, Ashek ; Kanij, Tanjila

Author_Institution

Rajshahi Univ. of Eng. & Technol., Rajshahi

fYear

2007

fDate

21-23 Nov. 2007

Firstpage

1887

Lastpage

1892

Abstract

This paper basically is an effort for finding the best possible PN codes used in multi-user environment. This includes the various types of PN codes and their techniques, benefits and shortcomings and as well as their properties. It has been seen that the length of the code, autocorrelation and cross correlation properties can help us to determine the best suitable code for any particular communication environment. We have tried to find out the PN codes with suitable autocorrelation properties along with low cross correlation values. We assumed only the bipolar case. In this paper we have worked on different types of PN codes. At first, we have tried to find out the best codes in 64 bit Walsh code. Then we have tried to find out those codes in 64 Walsh codes which have best auto correlation properties. Finally we have worked on the barker codes. The barker code has good autocorrelation properties and we have found the pairs with the low cross correlation so that they can be used in multi-user environment.

Keywords

code division multiple access; multiuser channels; pseudonoise codes; spread spectrum communication; CDMA technology; Walsh code; barker code; multiuser environment; performance evaluation; pseudonoise code; Autocorrelation; Bandwidth; Computer science; Environmental management; Information technology; Land mobile radio; Mobile communication; Multiaccess communication; Spread spectrum communication; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Convergence Information Technology, 2007. International Conference on

Conference_Location

Gyeongju

Print_ISBN

0-7695-3038-9

Type

conf

DOI

10.1109/ICCIT.2007.167

Filename

4420527