Title :
Gaussian codes and the scaled nearest neighbor decoder in fading multi-antenna channels
Author :
Weingarten, Hanan ; Steinberg, Yossef ; Shamai, Shlomo
Author_Institution :
Fac. of Electr. Eng., Technion-Israel Inst. of Technol., Haifa, Israel
Abstract :
We investigate the fading multi-input-multi-output (MIMO) channel in the presence of imperfect channel state information at the receiver. A modified nearest neighbor decoder is presented and is assumed to operate in concert with a random Gaussian coding scheme. A simple expression for the generalized mutual information (GMI) is obtained. New results for the training sequences and optimal antenna usage are presented, based on the GMI rates.
Keywords :
Gaussian channels; MIMO systems; channel capacity; channel estimation; decoding; fading channels; random codes; GMI rates; Gaussian codes; MIMO channel; fading channel; generalized mutual information; imperfect channel state information; multi-antenna channels; random coding scheme; scaled nearest neighbor decoder; training sequences; Channel capacity; Channel state information; Covariance matrix; Decoding; Fading; MIMO; Mutual information; Nearest neighbor searches; Receiving antennas; Transmitting antennas;
Conference_Titel :
Information Theory, 2002. Proceedings. 2002 IEEE International Symposium on
Print_ISBN :
0-7803-7501-7
DOI :
10.1109/ISIT.2002.1023525
