Title :
On phase correct blind deconvolution of flat MIMO channels exploiting channel encoding
Author :
Scherb, Ansgar ; Kühn, Volker ; Kammeyer, Karl-Dirk
Author_Institution :
Dept. of Commun. Eng., Bremen Univ., Germany
Abstract :
In this paper, we propose a new algorithm separating blindly the sources of a flat MIMO-communication link, where all sources are independently channel encoded. To this end the proposed method exploits statistical dependencies caused by the channel code for blindly estimating the channel and simultaneously adjusting a linear equalizer. In contrast to most common blind source separation methods the suggested method completely resolves the phase and permutation ambiguity of the estimated channel impulse response and the equalizer. The performance of the presented method is evaluated by numerical results.
Keywords :
MIMO systems; blind equalisers; channel coding; deconvolution; parity check codes; transient response; channel code statistical dependencies; channel encoding; channel impulse response; flat MIMO channels; linear equalizer; low density parity check codes; permutation ambiguity; phase ambiguity; phase correct blind deconvolution; Blind source separation; Channel coding; Channel state information; Deconvolution; Equalizers; Gaussian distribution; MIMO; Phase estimation; Probability density function; Source separation;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on
Print_ISBN :
0-7803-8874-7
DOI :
10.1109/ICASSP.2005.1415892