NDLI: Adaptive MIMO-OFDM combining space-time block codes and spatial multiplexing

Content Provider	IEEE Xplore Digital Library
Author	Halmi, M.H. Chieng, D.H.T.
Copyright Year	2004
Description	Author affiliation: Multimedia Univ., Malaysia (Halmi, M.H.; Chieng, D.H.T.)
Abstract	The increase in demand for higher capacity and data rates over wireless channels has fueled researchers to explore the time, frequency and spatial dimensions of signal transmission. Thus, dynamic signal transmission with a multiple dimensions approach emerged as a powerful paradigm in meeting with these demands. Multiple-input multiple-output (MIMO) communication systems offer significant capacity gain compared to conventional single-input single-output (SISO) systems by exploiting the spatial dimension. Many MIMO techniques have been proposed including space-time coding (STC) and spatial multiplexing (SM). STC is used to provide more reliable communication, whereas the SM technique delivers faster communication. Combining STC and SM offers the best trade-off between transmission reliability and capacity. Using adaptive power and bit loading schemes, time-varying channel characteristics are exploited to improve data rate, reliability and power optimization. Spectrum efficiency is increased using orthogonal frequency division multiplexing (OFDM), a powerful method that utilizes the orthogonality of signals in the frequency domain to combat intersymbol interference (ISI). The paper proposes an adaptive MIMO-OFDM system model that combines both STC and SM over space. This model exploits all three dimensions of signal transmission to provide high data rates and robust signal transmission.
Starting Page	444
Ending Page	448
File Size	610578
Page Count	5
File Format	PDF
ISBN	0780384083
DOI	10.1109/ISSSTA.2004.1371739
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-08-30
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Block codes Samarium MIMO Power system reliability OFDM Intersymbol interference Power system modeling Time-varying channels Frequency domain analysis Adaptive systems
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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