Title :
Performance of a receiver in large time-frequency spreading channels
Author_Institution :
Inf. & Coding Theory Lab., Kiel Univ., Germany
Abstract :
In this paper, we investigate the communication over time-varying frequency selective channels that exhibit large delay spread and Doppler spread. The receiver consists of a decision-feedback equalizer (DFE) and a Kalman filter for channel estimation. Brief derivations for the algorithms are given. Simulation results show that there exists an irreducible error floor depending on the Doppler spread; the receiver can obtain a bit error rate (BER) of 10/sup -2/ for channel with spreading factor up to 0.2.
Keywords :
Kalman filters; channel estimation; decision feedback equalisers; error statistics; filtering theory; receivers; time-varying channels; BER; DFE; Doppler spread; Kalman filter; bit error rate; decision feedback equalizer; large delay spread; time varying frequency selective channels; time-frequency spreading channels; Bit error rate; Channel estimation; Codes; Decision feedback equalizers; Delay effects; Fading; Intersymbol interference; Maximum likelihood estimation; Scattering; Time frequency analysis;
Conference_Titel :
OCEANS 2003. Proceedings
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-933957-30-0
DOI :
10.1109/OCEANS.2003.178571
