NDLI: Differential space-frequency modulation for MIMO-OFDM systems via a "smooth" logical channel

Content Provider	IEEE Xplore Digital Library
Author	Weifeng Su Liu, K.J.R.
Copyright Year	2004
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Maryland Univ., College Park, MD, USA (Weifeng Su; Liu, K.J.R.)
Abstract	In this paper, a differential space-frequency modulation (DSFM) scheme is proposed for MIMO-OFDM systems with assumptions that the channel keeps constant only within each OFDM block, and it may change independently from one OFDM block to another. The transmitted/received signals are differentially en/decoded in the frequency dimension within each OFDM block. The performance of the proposed scheme depends on the channel power delay profile. Moreover, if the statistics of the power delay profile are known at the transmitter, we further propose to permutate the channel frequency responses over subcarriers; by using Dijkstra's algorithm to increase the performance of the DSFM scheme. Simulation results show that the DSFM scheme with permutations performs very well for various channel profiles.
Starting Page	913
Ending Page	917
File Size	527037
Page Count	5
File Format	PDF
ISBN	0780387945
DOI	10.1109/GLOCOM.2004.1378093
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-11-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Decoding Delay Fading MIMO Transmitters Frequency diversity OFDM modulation Statistics Wireless communication Modulation coding
Content Type	Text
Resource Type	Article

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