A new radio access scheme based on CDMA for B3G wireless communications

Author

Zhang, Yi ; Liu, Qi ; Xie, Lan

Author_Institution

Sch. of Photoelectric Inf. & Commun. Eng., Beijing Inf. Sci. & Technol. Univ., Beijing, China

fYear

2009

fDate

14-17 Oct. 2009

Firstpage

184

Lastpage

187

Abstract

A new scenario of multiple access technology for beyond 3G wireless communications named CDD- dual-CDMA is proposed. CDD (code-division duplex) is a method to improve the spectrum efficiency by adding smart codes into time-division duplex (TDD) technology. The concept of dual-CDMA (dual-code division multiple access) is dividing traffic channels by both LAS (large area synchronous) codes and LS (loosely synchronous) cods, in order to eliminate inter-symbol interference (ISI) and multiple access interference (MAI). At the same time, the problem that the number of available smart codes is limited could also be solved. In the paper, the performance of CDD- dual-CDMA is analyzed. The result of simulation shows that BER (bit error rate) performance of CDD- dual-CDMA is much better than traditional random codes. Additionally, CDD- dual-CDMA scenario is a flexible scheme, and can be used for improvement of TD-SCDMA system. Therefore, CDD- dual-CDMA scenario is more suitable for the future mobile communications.

Keywords

3G mobile communication; code division multiple access; error statistics; intersymbol interference; radio access networks; beyond 3G wireless communications; bit error rate; code division duplex; dual code division multiple access; inter-symbol interference; large area synchronous codes; loosely synchronous cods; multiple access interference; multiple access technology; radio access scheme; smart codes; time division duplex; 3G mobile communication; Autocorrelation; Bit error rate; Information science; Interference elimination; Mobile communication; Multiaccess communication; Multiple access interference; Performance analysis; Wireless communication; B3G; CDMA; radio access; wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Future Information Networks, 2009. ICFIN 2009. First International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-5158-6

Electronic_ISBN

978-1-4244-5159-3

Type

conf

DOI

10.1109/ICFIN.2009.5339571

Filename

5339571