TY - GEN
T1 - Joint low density parity-check coding and linear precoding for Rayleigh fading channels
AU - Yu, Yingqun
AU - Giannakis, Georgios B.
PY - 2006
Y1 - 2006
N2 - We introduce a serially concatenated scheme consisting of outer low density parity-check (LDPC) coding and inner complex field linear precoding (LP) for reliable communications over wireless fading channels. We compare the ergodic capacities of the uncorrelated Rayleigh flat fading channel with and without LP, and show that for constellation-constrained inputs LP can bring considerable signal-to-noise ratio (SNR) gains even with precoders of size as small as 2 or 4. We further derive both optimal and low-complexity sub-optimal iterative decoding algorithms and employ extrinsic information transfer (EXIT) charts to approximately evaluate threshold values of their performance. Simulations reveal that when BPSK is used, the novel LDPC-LP scheme results in up to 1.3dB (1.0dB) gain at rate 1/2 for regular (irregular) codes with a medium block size.
AB - We introduce a serially concatenated scheme consisting of outer low density parity-check (LDPC) coding and inner complex field linear precoding (LP) for reliable communications over wireless fading channels. We compare the ergodic capacities of the uncorrelated Rayleigh flat fading channel with and without LP, and show that for constellation-constrained inputs LP can bring considerable signal-to-noise ratio (SNR) gains even with precoders of size as small as 2 or 4. We further derive both optimal and low-complexity sub-optimal iterative decoding algorithms and employ extrinsic information transfer (EXIT) charts to approximately evaluate threshold values of their performance. Simulations reveal that when BPSK is used, the novel LDPC-LP scheme results in up to 1.3dB (1.0dB) gain at rate 1/2 for regular (irregular) codes with a medium block size.
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U2 - 10.1109/CISS.2006.286613
DO - 10.1109/CISS.2006.286613
M3 - Conference contribution
AN - SCOPUS:44049084248
SN - 1424403502
SN - 9781424403509
T3 - 2006 IEEE Conference on Information Sciences and Systems, CISS 2006 - Proceedings
SP - 1008
EP - 1013
BT - 2006 IEEE Conference on Information Sciences and Systems, CISS 2006 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2006 40th Annual Conference on Information Sciences and Systems, CISS 2006
Y2 - 22 March 2006 through 24 March 2006
ER -