Projection receiver: a new efficient multi-user detector

Author

Schlegel, C.B. ; Xiang, Z.-J. ; Roy, S.

Author_Institution

Coding, Commun. & Control Lab., Texas Univ., San Antonio, TX, USA

fYear

1995

fDate

13-17 Nov 1995

Firstpage

142

Lastpage

146

Abstract

A new multi-user receiver for synchronous coded CDMA systems is proposed that removes the multi-user interference (MUI) by projecting the interfering users onto the signal space of the desired users, i.e., chooses the least mean squares (LMS) estimate of the interfering users. This results in an adjusted metric for decoding of the desired user(s) which is (are) decoded via maximum-likelihood sequence estimation (MLSE). Simulation results confirm superior system performance, using only a single user decoder

Keywords

cellular radio; code division multiple access; interference suppression; land mobile radio; least mean squares methods; maximum likelihood decoding; maximum likelihood estimation; radio receivers; radiofrequency interference; adjusted metric; decoding; desired users; efficient multi-user detector; interfering users; least mean squares estimate; maximum-likelihood sequence estimation; multi-user interference; projection receiver; signal space; synchronous coded CDMA systems; system performance; Code division multiaccess; Interference suppression; Land mobile radio cellular systems; Land mobile radio equipment; Land mobile radio interference; Least mean square methods; Maximum likelihood decoding; Maximum likelihood estimation; Radio receivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1995. Conference record. Communication Theory Mini-Conference, GLOBECOM '95., IEEE

Print_ISBN

0-7803-2509-5

Type

conf

DOI

10.1109/CTMC.1995.502948

Filename

502948