A New Constellation Shaping Method and Its Performance Evaluation in BICM-ID

Author

Zhang, Jiayin ; Chen, Dageng ; Wang, Yi

Author_Institution

Huawei Technol. Co. Ltd., Shanghai, China

fYear

2009

fDate

20-23 Sept. 2009

Firstpage

1

Lastpage

5

Abstract

Using equiprobable M-PAM/QAM constellation instead of Gaussian-distributed signal suffers performance loss, and the ultimate performance loss in high SNR regime is 1.53 dB. In this paper, we propose a new shaping method to optimize equiprobable constellations. The obtained PSK-PAM constellations can achieve performance gain in sense of mutual information by up to 0.3 dB and 0.57 dB over 16 QAM and 64 QAM, respectively. The new constellations are then applied to bit-interleaved coded modulation with iterative decoding (BICM-ID) and the performance gain over M-QAM is verified.

Keywords

interleaved codes; iterative decoding; modulation coding; performance evaluation; pulse amplitude modulation; quadrature amplitude modulation; Gaussian-distributed signal; M-PAM constellation; PSK-PAM constellations; QAM constellation; bit-interleaved coded modulation; iterative decoding; performance evaluation; performance gain; Constellation diagram; Gaussian processes; Interleaved codes; Iterative decoding; Modulation coding; Mutual information; Optimization methods; Performance gain; Performance loss; Quadrature amplitude modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference Fall (VTC 2009-Fall), 2009 IEEE 70th

Conference_Location

Anchorage, AK

ISSN

1090-3038

Print_ISBN

978-1-4244-2514-3

Electronic_ISBN

1090-3038

Type

conf

DOI

10.1109/VETECF.2009.5378694

Filename

5378694