Bandwidth efficient parallel concatenated coding schemes |
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| Authors: | Benedetto S. Divsalar D. Montorsi G. Pollara F. |
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| Affiliation: | Dipartimento di Elettronica, Politecnico di Torino ; |
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| Abstract: | The authors propose a solution to the parallel concatenation of trellis codes with multilevel amplitude/phase modulations and a suitable iterative decoding structure. Examples are given for throughputs 2bit/s/Hz with 8PSK and 16QAM signal constellations. For parallel concatenated trellis codes in the examples, rate 2/3 and 4/5, 16-state binary convolutional codes with Gray code mapping are used. The performances of these codes are within 1 dB of the Shannon limit at a bit error probability of 10-6 for a given throughput. This outperforms all codes reported in the past for the same throughput |
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