Bit-wise demodulation for 16-QAM with BICM

Author

Fu, Wei ; Liu, Jim ; Zhu, Guangxi

Author_Institution

Dept. of Electron. Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China

fYear

2002

fDate

2002

Firstpage

444

Lastpage

449

Abstract

Bit-wise demodulation (BWD) is a novel demodulation method used in 16-QAM with BICM. Bit-interleaved coded modulation (BICM) proposed by Zehavi (1992) has proved to be capable of improving the performance of coded modulation over a Rayleigh fading channel by bit-wise interleaving at the encoder output, and using an appropriate soft-decision metric as an input to a Viterbi (1989) decoder. This paper aims at advancing BICM with a new demodulating method, BWD, which can achieve better performance than current BICM and a simpler structure. The BICM with BWD can be easily implemented with the same of receiver structure as QPSK.

Keywords

AWGN channels; Rayleigh channels; Viterbi decoding; demodulation; error statistics; modulation coding; quadrature amplitude modulation; 16-QAM; AWGN channels; BICM; QPSK; Rayleigh fading channel; Viterbi decoder; bit-interleaved coded modulation; bit-wise demodulation; encoder output; error probability analysis; quadrature amplitude modulation; receiver structure; simulation results; soft-decision metric; AWGN; Constellation diagram; Decoding; Demodulation; Fading; Interleaved codes; Modulation coding; Quadrature amplitude modulation; Quadrature phase shift keying; Viterbi algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems for Communications, 2002. Proceedings. ICCSC '02. 1st IEEE International Conference on

Print_ISBN

5-7422-0260-1

Type

conf

DOI

10.1109/OCCSC.2002.1029137

Filename

1029137