Performance of non-uniform 16QAM modulation over linear and nonlinear channels

A technique of using a non-uniform 16QAM modulation combined with bit interleaved coded modulation and a new iterative decoding (BICM-ID) scheme is investigated. Simulation results of a parallel concatenated convolutional code shows a gain of 0.95dB at a BER of 10-5 compared to conventional uniform...

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Veröffentlicht in:	Electronics letters 2006-04, Vol.42 (9), p.544-546
Hauptverfasser:	NGO, N. H, PIETROBON, S. S, BARBULESCU, S. A
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Coding, codes Exact sciences and technology Information, signal and communications theory Modulation, demodulation Satellite telecommunications. Space telecommunications Signal and communications theory Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Transmission and modulation (techniques and equipments)
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Zusammenfassung:	A technique of using a non-uniform 16QAM modulation combined with bit interleaved coded modulation and a new iterative decoding (BICM-ID) scheme is investigated. Simulation results of a parallel concatenated convolutional code shows a gain of 0.95dB at a BER of 10-5 compared to conventional uniform 16QAM modulation in a linear channel. For a nonlinear satellite channel, this scheme offers a gain of 1.2dB at the same BER compared to a uniform constellation.
ISSN:	0013-5194 1350-911X
DOI:	10.1049/el:20060836