Title :
ESPRIT-based delay estimators for DS-CDMA systems
Author :
Ruifeng, Zhao ; Zhenhui, Tan
Author_Institution :
Modern Commun. Res. Inst., Northern Jiaotong Univ., Beijing, China
Abstract :
Most receiver designs for asynchronous DS-CDMA systems exploit timing information to simultaneously detect the desired signal and suppress the multiple access interference (MAI). An ESPRIT delay estimation algorithm is proposed which required no initial information and no exhaustive search of the delays, the proposed estimators can thus be used for both acquisition and tracking. The estimate results have been compared to a previously derived approximation and simulation data. The new approach appears to provide improved accuracy
Keywords :
AWGN channels; code division multiple access; delay estimation; interference suppression; multiuser channels; parameter estimation; radiofrequency interference; signal detection; spread spectrum communication; synchronisation; timing; AWGN channel; ESPRIT-based delay estimators; MMSE-based multi-user receivers; additive white Gaussian noise channel; approximation; asynchronous DS-CDMA systems; delay estimator statistics; multiple access interference suppression; propagation delay estimation; receiver design; signal detection; simulation data; timing information; tracking; AWGN; Additive white noise; Delay estimation; Gaussian noise; Modems; Modulation coding; Multiaccess communication; Parameter estimation; Propagation delay; Signal design;
Conference_Titel :
Communications, 2000. ICC 2000. 2000 IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-6283-7
DOI :
10.1109/ICC.2000.853741
