Title :
On the construction of spreading sequences for asynchronous CDMA systems with linear multiuser detection
Author :
Elder-Boll, H. ; Schotten, Hans Dieter
Author_Institution :
Inst. fur Elektrische Nachrichtentech., Tech. Hochschule Aachen, Germany
Abstract :
We consider the design of spreading sequences for CDMA systems with linear multiuser detectors. The properties of optimum sequences are investigated. It is found that sequences with a low average interference parameter are at least near-optimal and that the SNR of the decorrelator and the SIR of the LMMSE detector are improved by these sequences by about 1-2 dB
Keywords :
code division multiple access; decorrelation; interference (signal); least mean squares methods; receivers; sequences; spread spectrum communication; 1 to 2 dB; LMMSE detector; SIR; SNR; asynchronous CDMA systems; average interference parameter; decorrelator; linear multiuser detectors; spreading sequences; Bit error rate; Decorrelation; Detectors; Gold; Interference; Matched filters; Multiaccess communication; Multiuser detection; Signal to noise ratio; System performance;
Conference_Titel :
Information Theory, 1998. Proceedings. 1998 IEEE International Symposium on
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-5000-6
DOI :
10.1109/ISIT.1998.708712
