Title :
A blind delay estimation algorithm for long-code DS/CDMA systems
Author :
Buzzi, Stefano ; Lops, Marco ; Poor, H. Vincent
Author_Institution :
DAEIMI, Univ. degli Studi di Cassino, Italy
Abstract :
The problem of delay estimation in DS/CDMA systems employing aperiodic spreading codes is considered. A blind procedure is proposed, which does not require the use of known training symbols nor does it rely on the knowledge of other users´ signature waveforms. This procedure can be implemented recursively and has a computational complexity that is quadratic in the processing gain. Simulation results reveal that the proposed algorithm provides delay estimates with an error smaller than 10% of the CDMA system chip interval
Keywords :
code division multiple access; codes; computational complexity; delay estimation; multiuser channels; spread spectrum communication; aperiodic spreading codes; blind delay estimation algorithm; chip interval; computational complexity; error; long-code DS/CDMA systems; processing gain; recursive estimation; simulation results; Code standards; Computational complexity; Computational modeling; Delay estimation; Digital communication; Multiaccess communication; Multiple signal classification; Parameter estimation; Proposals; Time varying systems;
Conference_Titel :
Information Theory, 2001. Proceedings. 2001 IEEE International Symposium on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-7123-2
DOI :
10.1109/ISIT.2001.936036
