Title :
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
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;
Conference_Titel :
Convergence Information Technology, 2007. International Conference on
Conference_Location :
Gyeongju
Print_ISBN :
0-7695-3038-9
DOI :
10.1109/ICCIT.2007.167
