On Limits of Wireless Communications in a Fading Environment when UsingMultiple Antennas
Wireless Personal Communications: An International Journal
Low-density parity-check codes over Gaussian channels with erasures
IEEE Transactions on Information Theory
Rate-compatible punctured low-density parity-check codes with short block lengths
IEEE Transactions on Information Theory
Adaptive discrete-rate MIMO communications with rate-compatible LDPC codes
IEEE Transactions on Communications
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In this paper, we present ensembles of incremental redundancy low-density parity-check (IR-LDPC) codes to improve the throughput performance of hybrid forward error correction (FEC)/automatic repeat request (ARQ) schemes in a vertical Bell lab layered space-time (V-BLAST) system. These ensembles are designed to have good error rate performance at short block lengths, which result in higher throughput performance. The throughput simulations in various fading conditions show that these ensembles outperform a conventional random punctured ensemble by 3 dB Eb/N0 at a throughput region of 0.8. To reduce the traffic of feedback channels, we consider using an adaptive code selection algorithm. In these adaptive hybrid FEC/ARQ schemes, the number of negative acknowledgement signals for retransmission is greatly reduced at operating SNR ranges without any significant throughput loss.