NDLI: Optimised constellations for transmitter diversity

Content Provider	IEEE Xplore Digital Library
Author	Correia, A. Hottinen, A. Wichman, R.
Copyright Year	1999
Description	Author affiliation: Nokia Res. Center, Helsinki, Finland (Correia, A.)
Abstract	In this paper transmitter antenna diversity for the downlink is proposed in conjunction with the optimum fading diversity transform. In spectrally efficient transmitter antenna frequency and time diversity schemes the information bit stream is divided into sub-streams and each sub-stream is transmitted over a different antenna, a different frequency, or a different time slot. The present work provides a fading resistant transmission scheme where a base station uses M1 antennas and M2 time slots (M=M1/spl times/M2). These transmissions are coordinated to mitigate the effects of multi-path Rayleigh fading and the mobile receiver can recover the entire M-dimensional transmitted vector as long as the signal energy of at least one coordinate is large enough. The selective transmitter antenna diversity (antenna diversity) scheme is coordinated with the new complex diversity transform (time diversity) to get the highest BER performance for low signal to noise ratio. This scheme offers a significant BER performance improvement over previous M-dimensional fading resistant constellations proposed.
Starting Page	1785
Ending Page	1789
File Size	458411
Page Count	5
File Format	PDF
ISBN	0780354354
ISSN	10903038
DOI	10.1109/VETECF.1999.801704
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-09-19
Publisher Place	The Netherlands
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Transmitters Transmitting antennas Slot antennas Fading Frequency conversion Frequency diversity Rayleigh channels Bit error rate Downlink Base stations
Content Type	Text
Resource Type	Article

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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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