Title :
Performance/complexity issues in multi-user CDMA systems
Author :
Schlegel, Christian B. ; Rasmussen, Lars K.
Author_Institution :
Texas Univ., San Antonio, TX, USA
Abstract :
Joint detection of synchronous and asynchronous CDMA is considered. A near-optimal detector structure is presented which consists of a linear preprocessor, a whitening matched matrix filter, followed by a reduced-complexity tree search, the M-algorithm. It is shown that this combination achieves a performance which is virtually identical to that of the optimal receiver, even for large numbers of users. The complexity of this detector is linear in the number of users K
Keywords :
cellular radio; code division multiple access; computational complexity; matched filters; radio receivers; signal detection; tree searching; M-algorithm; asynchronous CDMA; cellular radio; linear preprocessor; linear receivers; multiuser systems; near-optimal detector structure; reduced-complexity tree search; synchronous CDMA; whitening matched matrix filter; Australia; Channel bank filters; Detectors; Interference; Land mobile radio cellular systems; Matched filters; Mobile communication; Multiaccess communication; RAKE receivers; Telephony;
Conference_Titel :
Vehicular Technology Conference, 1995 IEEE 45th
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-2742-X
DOI :
10.1109/VETEC.1995.504916
