NDLI: DAPSK schemes for low-complexity OFDM systems

Content Provider	IEEE Xplore Digital Library
Author	Toender, N. Rohling, H.
Copyright Year	2005
Description	Author affiliation: Technische Univ. Hamburg-Harburg, Hamburg (Toender, N.; Rohling, H.)
Abstract	In this paper, orthogonal frequency division multiplexing (OFDM) systems with coherent, incoherent and quasi-coherent demodulation schemes will be considered respectively. Resulting system performance figures will be compared in terms of bit error rate (BER) and hardware complexity. It is well known that non-differential modulation and coherent demodulation techniques have optimum BER performance but lead to a significantly increased system overhead due to pilot signals and system complexity due to channel estimation procedure. This paper describes differential modulation schemes, which do not require any radio channel estimation, and two related incoherent and quasi-coherent demodulation techniques. The resulting BER performance is nearly identical compared with coherent demodulation, but the computation complexity is drastically reduced. A field programmable gate array (FPGA) based experimental system has been developed, which is used for BER performance measurements and system complexity considerations
Starting Page	735
Ending Page	739
File Size	2702075
Page Count	5
File Format	PDF
ISBN	9783800729098
DOI	10.1109/PIMRC.2005.1651540
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-09-11
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Demodulation OFDM modulation Bit error rate Channel estimation Hardware Field programmable gate arrays Digital video broadcasting Decoding System performance Wireless LAN
Content Type	Text
Resource Type	Article

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