Title :
Multi-layer SISO coding for MIMO channels
Author :
Perlmutter, Uri ; Erez, Uri
Author_Institution :
Dept. EE,Syst., Tel Aviv Univ., Tel Aviv
Abstract :
A coding scheme for a MIMO channel, based on superposition of dithered orthogonal design space-time block codes, is presented, building on and extending recent work of Erez, Wornell and Trott. When used in conjunction with successive decoding, the MIMO channel is converted into a set of AWGN scalar channels, allowing for standard coding and decoding techniques to be employed. By superimposing multiple layers of orthogonal-design codes, the well known drawback of loss of degrees of freedom of the latter is alleviated. When used in a closed-loop mode, the scheme allows to approach the white-input capacity of a MIMO channel with limited feedback, i.e., with feedback of the eigenvalues of the channel matrix. When used in an open-loop mode, the scheme exhibits good performance in terms of the diversity-multiplexing tradeoff. Further, the computational complexity is linear in the transmission rate.
Keywords :
AWGN channels; MIMO communication; block codes; channel capacity; communication complexity; eigenvalues and eigenfunctions; matrix algebra; orthogonal codes; space-time codes; AWGN scalar channels; MIMO channels; channel matrix; computational complexity; dithered orthogonal design space-time block codes; diversity-multiplexing tradeoff; eigenvalues; multilayer SISO coding; open-loop mode; orthogonal-design codes; white-input capacity; AWGN channels; Block codes; Decoding; Eigenvalues and eigenfunctions; Feedback; MIMO; Modulation coding; Mutual information; Transmitters; Transmitting antennas;
Conference_Titel :
Information Theory, 2008. ISIT 2008. IEEE International Symposium on
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-4244-2256-2
Electronic_ISBN :
978-1-4244-2257-9
DOI :
10.1109/ISIT.2008.4595150