Title :
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
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;
Conference_Titel :
Global Telecommunications Conference, 1995. Conference record. Communication Theory Mini-Conference, GLOBECOM '95., IEEE
Print_ISBN :
0-7803-2509-5
DOI :
10.1109/CTMC.1995.502948
