A Performance Comparison of DS-CDMA and MC-CDMA with Per-User MMSE Frequency Domain Equalization

Author

Luo, Tao ; Wu, Gang ; Li, Shaoqian ; Guan, Yong Liang ; Law, Choi Look

Author_Institution

Univ. of Electron. Sci. & Technol. of China, Chengdu

Volume

2

fYear

2007

fDate

6-8 Dec. 2007

Firstpage

163

Lastpage

167

Abstract

Direct sequence code-division multiple access (DS-CDMA) and multicarrier (MC-) CDMA are two important CDMA schemes for high rate wireless communication. A novel linear per user minimum mean square error (PU-MMSE) detection technique for DS-CDMA with frequency domain equalization (FDE) based on the MMSE criterion applied per user is presented. It is shown by computer simulation that PU-MMSE outperforms conventional per carrier (PC-) MMSE for DS-CDMA with FDE in frequency selective block fading channel. The performance of DS-CDMA with PU-MMSE FDE can be further promoted by successive interference cancellation (SIC). Comparing to MC-CDMA with PU-MMSE FDE, DS-CDMA with PU-MMSE FDE has no performance loss and has much lower peak-to-average power ratio (PAPR).

Keywords

code division multiple access; interference suppression; mobile communication; DS-CDMA; MC-CDMA; direct sequence code-division multiple access; high rate wireless communication; linear per user minimum mean square error detection; multicarrier CDMA; per-user MMSE frequency domain equalization; Computer simulation; Fading; Frequency domain analysis; Interference cancellation; Mean square error methods; Multiaccess communication; Multicarrier code division multiple access; Peak to average power ratio; Silicon carbide; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Future Generation Communication and Networking (FGCN 2007)

Conference_Location

Jeju

Print_ISBN

0-7695-3048-6

Type

conf

DOI

10.1109/FGCN.2007.30

Filename

4426224