NDLI: DFT-spread OFDM for uplink flexible high data rate communications

Content Provider	IEEE Xplore Digital Library
Author	Meng Wah Chia Boon Sim Thian Tjeng Thiang Tjhung
Copyright Year	2009
Description	Author affiliation: Department of Electrical Engineering, 161 Packard Building, 350 Serra Mall, Stanford CA 94305-9505 (Boon Sim Thian) \|\| Institute for Infocomm Research, 1 Fusionopolis Way, Connexis, Singapore 138632 (Meng Wah Chia; Tjeng Thiang Tjhung)
Abstract	In this paper, we develop and present a DFT-SOFDM system (operating in both distributed and localized FDMA modes) for transmission and reception through a frequency-selective, slow fading channel. This system allows us to use well-known linear receiver techniques such as the zero-forcing (ZF) and minimum mean-squared error (MMSE) equalization. More importantly, we proposed using a sphere decoding algorithm (SDA) on DFT-SOFDM to obtain a maximum-likelihood (ML) estimate on the received signal, hence achieving superior bit error rate (BER) performance without the complexity of an exhaustive search. Simulation results show that SDA gives superior BER performance for both distributed and localized DFT-SOFDM compared to suboptimal ZF or MMSE receivers.
Starting Page	1983
Ending Page	1987
File Size	321027
Page Count	5
File Format	PDF
ISBN	9781424451227
e-ISBN	9781424451234
DOI	10.1109/PIMRC.2009.5450357
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-13
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	OFDM Bit error rate Frequency division multiaccess Maximum likelihood estimation Fading Maximum likelihood decoding Lattices AWGN Transmitters Frequency diversity sphere decoding algorithm DFT-SOFDM maximum likelihood estimation
Content Type	Text
Resource Type	Article

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