Title :
Signal Detection and Abrupt-Channel Tracking for MC-CDMA
Author :
Wang, Huahui ; Li, Tongtong
Author_Institution :
Dept. of Electr. & Comput. Eng., Michigan State Univ., East Lansing, MI
Abstract :
In this paper, a channel estimation and multiuser detection method is presented for uplink MC-CDMA systems in time-varying environment. Based on the fact that the channel coefficients of two successive symbols are highly correlated, joint channel tracking and signal detection are carried out iteratively. A major contribution of the proposed approach is that it enables robust error propagation control, and is capable of detecting and tracking abrupt channel changes effectively. Simulation examples demonstrate the robustness of the proposed algorithms
Keywords :
channel estimation; code division multiple access; multiuser detection; radio links; time-varying channels; wireless channels; abrupt-channel tracking; channel estimation; error propagation control; multicarrier code division multiple access; multiuser detection method; signal detection; time-varying environment; uplink MC-CDMA systems; Channel estimation; Filtering; Kalman filters; Multicarrier code division multiple access; Multiuser detection; OFDM; Signal detection; Time-varying channels; Transmitters; Wireless communication;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on
Conference_Location :
Toulouse
Print_ISBN :
1-4244-0469-X
DOI :
10.1109/ICASSP.2006.1660895
