Iterative Demodulation and Decoding of Uplink Multiuser M-ary FSK Using OFDMA Mapping

Author

Jinho Choi ; Jeongseok Ha

Author_Institution

Sch. of Inf. & Commun., Gwangju Inst. of Sci. & Technol. (GIST), Gwangju, South Korea

Volume

17

Issue

9

fYear

2013

fDate

Sep-13

Firstpage

1842

Lastpage

1845

Abstract

In this paper, we study iterative demodulation and decoding (IDD) for a multiuser system where users employ M-ary frequency shift keying to transmit their signals to a base station (BS). Since joint multiuser detection requires a prohibitively high computational complexity, we propose a suboptimal low-complexity detection method that can take into account extrinsic bit information, which is well-suited to IDD. Under a certain condition, its complexity grows linearly with the number of users.

Keywords

OFDM modulation; demodulation; frequency division multiple access; frequency shift keying; interleaved codes; iterative decoding; multiuser detection; IDD; M-ary frequency shift keying; OFDMA mapping; base station; bit-interleaved coded modulation; iterative demodulation-and-decoding; joint multiuser detection; multiuser system; suboptimal low-complexity detection method; uplink multiuser M-ary FSK; Complexity theory; Decoding; Detectors; Frequency shift keying; Iterative decoding; Loading; Receivers; Bit-interleaved coded modulation (BICM); frequency-shift keying (FSK); iterative demodulation and decoding (IDD); multiuser detection;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2013.070913.131359

Filename

6560035