Belief Propagation Based Decoding of Large Non-Orthogonal STBCs
| dc.creator | Suneel, Madhekar | |
| dc.creator | Som, Pritam | |
| dc.creator | Chockalingam, A. | |
| dc.creator | Rajan, B. Sundar | |
| dc.date | 2009-01-13 | |
| dc.date.accessioned | 2026-07-07T12:29:03Z | |
| dc.date.available | 2026-07-07T12:29:03Z | |
| dc.description | 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 {\em large dimensions}. The proposed approach involves 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 $24\times 24$ STBC from CDA using BPSK (i.e., 576 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. | |
| dc.identifier | https://arxiv.org/abs/0901.1867 | |
| dc.identifier | http://arxiv.org/abs/0901.1867 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/215746 | |
| dc.subject | Information Theory | |
| dc.title | Belief Propagation Based Decoding of Large Non-Orthogonal STBCs | |
| dc.type | text |