Subspace-based noncoherent detection for CDMA channels

Author

Moon, Yong-Suk ; Kaveh, Mostafa

Author_Institution

Dept. of Electr. & Comput. Eng., Minnesota Univ., Minneapolis, MN, USA

fYear

1999

fDate

1999

Firstpage

182

Lastpage

185

Abstract

This paper presents a noncoherent subspace detection approach based on oblique projections for DS-CDMA systems, which performs complete rejection of interfering signals. The synchronous and asynchronous subspace detectors are introduced and examined. The transmission delays in asynchronous CDMA channels are not known to the receiver in practice. The effect of code acquisition errors on the performance of the noncoherent subspace detector is investigated. A robust noncoherent subspace detector in the presence of acquisition errors is presented, which shows reliable performance even under worse condition than the code acquisition algorithms may support

Keywords

code division multiple access; interference suppression; signal detection; telecommunication channels; CDMA channels; DS-CDMA system; asynchronous subspace detectors; code acquisition errors; interfering signals rejection; noncoherent subspace detection approach; oblique projections; subspace-based noncoherent detection; synchronous subspace detectors; transmission delays; Additive noise; Decorrelation; Delay; Detectors; Integrated circuit modeling; Integrated circuit noise; Matched filters; Multiaccess communication; Phase detection; Robustness;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Advances in Wireless Communications, 1999. SPAWC '99. 1999 2nd IEEE Workshop on

Conference_Location

Annapolis, MD

Print_ISBN

0-7803-5599-7

Type

conf

DOI

10.1109/SPAWC.1999.783049

Filename

783049