Title :
On LLR Clipping in BICM-IDD Non-Coherent MIMO Communications
Author :
Gohary, Ramy H. ; Willink, Tricia J.
Author_Institution :
Dept. of Syst. & Comput. Eng., Carleton Univ., Ottawa, ON, Canada
fDate :
6/1/2011 12:00:00 AM
Abstract :
In this letter a method is proposed for improving the performance of a BICM non-coherent MIMO communication system with iterative demapping and decoding. This method is based on adapting the clipping thresholds of the log-likelihood ratios of the demapper and the decoder to the channel realizations observed by each block. The method is particularly suited for systems in which the data blocks are relatively short and for systems in which list demapping is employed at the receiver.
Keywords :
MIMO communication; interleaved codes; iterative decoding; modulation coding; BICM-IDD noncoherent MIMO communications; LLR clipping; bit-interleaved coded modulation; clipping thresholds; iterative demapping and decoding; log-likelihood ratios; multiple-input multiple-output communication system; Bit error rate; Complexity theory; Decoding; Iterative decoding; MIMO; Receivers; Reliability; Bit-interleaved coded-modulation; iterative demapping and decoding; non-coherent MIMO;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2011.041811.110399
