Adaptive MIMO-OFDM based on partial channel state information

Pengfei Xia, Shengli Zhou, Georgios B. Giannakis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Relative to designs assuming no channel knowledge at the transmitter, considerably improved communications become possible when adapting the transmitter to the intended propagation channel. As perfect knowledge is rarely available, transmitter designs based on partial channel state information (CSI) are of paramount importance not only because they are more practical, but also because they encompass the perfect- and no-knowledge paradigms. Relying on partial CSI, this paper designs adaptive orthogonal frequency division multiplexed (OFDM) transmissions, that maximize the transmission rate over frequency-selective multi-input multi-output (MIMO) fading links. The adaptive transmitter pameters include beamformer weights and their power per OFDM subcarrier, as well as the power and bit loading across OFDM subcarriers. Our simulations confirm that adaptive two-directional beamforming combined with adaptive MIMO OFDM improves the transmission rate considerably.

Original languageEnglish (US)
Title of host publication2003 4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages551-555
Number of pages5
ISBN (Electronic)078037858X
DOIs
StatePublished - Jan 1 2004
Event4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003 - Rome, Italy
Duration: Jun 15 2003Jun 18 2003

Publication series

NameIEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
Volume2004-January

Other

Other4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003
CountryItaly
CityRome
Period6/15/036/18/03

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