Abstract
In this paper we present a novel performance analysis of bit-interleaved coded modulation (BICM) over AWGN channel for different modulation schemes considering a finite block length and suboptimal metrics calculation. Using the known BICM capacity analysis as well as the Gallager bound, we show that among many known modulations, only three M-ary quadrature amplitude modulation (QAM) are necessary to ensure the maximization of the channel capacity. We analyze the maximum throughput and the switching thresholds of the system, and we compare the theoretical analysis with simulation results of practical strong codes, i.e., turbo codes. We show that if the modulation and code are well adapted, the optimal throughput decreases by less than 1% when suboptimal metrics are used. We show also, that the turbo codes throughput is within 1.5 dB of the new bound, and the SNR switching thresholds, are shifted by 1.5 dB with respect to the theoretical analysis.
| Original language | English |
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| Title of host publication | 2006 IEEE Vehicular Technology Conference (VTC-Fall) |
| Place of Publication | Piscataway |
| Publisher | Institute of Electrical and Electronics Engineers |
| Pages | 1-5 |
| DOIs | |
| Publication status | Published - Sept 2006 |
| Event | 64rd Vehicular Technology Conference (VTC 2006-Fall) - Hyatt Regency Montreal, Montreal, QC, Canada, Montreal, Canada Duration: 25 Sept 2006 → 28 Sept 2006 Conference number: 64 |
Conference
| Conference | 64rd Vehicular Technology Conference (VTC 2006-Fall) |
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| Abbreviated title | VTC2006-Fall |
| Country/Territory | Canada |
| City | Montreal |
| Period | 25/09/06 → 28/09/06 |