Belief Propagation Based Decoding of Large Non-Orthogonal STBCs


Autoria(s): Suneel, Madhekar; Som, Pritam; Chockalingam, A; Rajan, Sundar B
Data(s)

2009

Resumo

In this paper,we present a belief propagation (BP) based algorithm for decoding non-orthogonal space-time block codes (STBC) from cyclic division algebras (CDA) having large dimensions. The proposed approachinvolves message passing on Markov random field (MRF) representation of the STBC MIMO system. Adoption of BP approach to decode non-orthogonal STBCs of large dimensions has not been reported so far. Our simulation results show that the proposed BP-based decoding achieves increasingly closer to SISO AWGN performance for increased number of dimensions. In addition, it also achieves near-capacity turbo coded BER performance; for e.g., with BP decoding of 24 x 24 STBC from CDA using BPSK (i.e.,n576 real dimensions) and rate-1/2 turbo code (i.e., 12 bps/Hz spectral efficiency), coded BER performance close to within just about 2.5 dB from the theoretical MIMO capacity is achieved.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/31352/1/belief.pdf

Suneel, Madhekar and Som, Pritam and Chockalingam, A and Rajan, Sundar B (2009) Belief Propagation Based Decoding of Large Non-Orthogonal STBCs. In: IEEE International Symposium on Information Theory (ISIT 2009), JUN 28-JUL 03, 2009, Seoul, pp. 2003-2007.

Publicador

IEEE

Relação

http://ieeexplore.ieee.org/search/srchabstract.jsp?tp=&arnumber=5205658&queryText%3DBelief+Propagation+Based+Decoding+of+Large+Non-Orthogonal+STBCs%26openedRefinements%3D*%26searchField%3DSearch+All

http://eprints.iisc.ernet.in/31352/

Palavras-Chave #Electrical Communication Engineering
Tipo

Conference Paper

PeerReviewed