NDLI: Iterative Decoding and Soft Interference Cancellation in Fast Frequency Hopping Multiuser System Using Clipped Combining

Content Provider	IEEE Xplore Digital Library
Author	Ahmed, S. Soon Xin Ng Lie-Liang Yang Hanzo, L.
Copyright Year	2007
Description	Author affiliation: Sch. of ECS, Southampton Univ. (Ahmed, S.)
Abstract	Iterative decoding (ID) aided fast frequency hopping (FFH), M-ary frequency shift keying (MFSK) using clipped combining in multiple access (MA) channels is investigated. All users' data are convolutionally encoded and the encoded bits are interleaved and converted to M-ary symbols, which are transmitted using FFH-MFSK modulation. The soft metrics to be passed from the demodulator to the decoder are derived assuming a Rayleigh fading channel. We also propose a novel multiuser detection (MUD) scheme which employs joint soft decoding as well as successive interference cancellation (SIC), the receiver exploiting the soft information fed back by the decoder to the demodulator in order to cancel the interference imposed by reliable symbols. Our simulation results show that the proposed scheme is capable of combatting multiuser interference and outperforms the conventional ID by about 3dB.
Starting Page	723
Ending Page	728
File Size	195978
Page Count	6
File Format	PDF
ISBN	1424406587
ISSN	15253511
DOI	10.1109/WCNC.2007.139
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-03-11
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Iterative decoding Interference cancellation Multiuser detection Silicon carbide Frequency shift keying Demodulation Convolutional codes Multiaccess communication Spread spectrum communication Convolution
Content Type	Text
Resource Type	Article

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