Title :
Decision-Feedback Turbo Equalization for Coded Intersymbol Interference Channels
Author_Institution :
Div. of Mechatronics & Recording Channel, Data Storage Inst.
Abstract :
The turbo equalizer based on the BCJR algorithm has an exponential computational complexity in terms of channel memory length. In this paper, we propose a low-complexity soft-input/soft-output (SISO) channel detector for intersymbol interference (ISI) channels based on tentative hard estimates fed back from the outer decoder in the previous iteration. It is shown that the proposed detector can greatly reduce the complexity with a negligible performance loss compared to the BCJR algorithm
Keywords :
channel coding; decision feedback equalisers; intersymbol interference; turbo codes; SISO channel detector; channel memory length; coded intersymbol interference channels; decision-feedback turbo equalization; exponential computational complexity; soft-input/soft-output channel detector; turbo equalizer; AWGN; Computational complexity; Decision feedback equalizers; Detectors; Interference cancellation; Intersymbol interference; Iterative algorithms; Iterative decoding; Maximum likelihood detection; Performance loss;
Conference_Titel :
Industrial Electronics and Applications, 2006 1ST IEEE Conference on
Conference_Location :
Singapore
Print_ISBN :
0-7803-9513-1
Electronic_ISBN :
0-7803-9514-X
DOI :
10.1109/ICIEA.2006.257134
