Opportunistic Beamforming Using Dumb Antennas

Opportunistic Beamforming Using Dumb Antennas (2002)

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by Pramod Viswanath , David Tse , Rajiv Laroia

Venue:	IEEE Transactions on Information Theory
Citations:	312 - 2 self

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Datum	Value	Source
TITLE	Opportunistic Beamforming Using Dumb Antennas	user correction - Legacy Corrections
AUTHOR NAME	Pramod Viswanath	user correction - Legacy Corrections
AUTHOR NAME	David Tse	user correction - Legacy Corrections
AUTHOR NAME	Rajiv Laroia	user correction - Legacy Corrections
ABSTRACT	Multiuser diversity is a form of diversity inherent in a wireless network, provided by independent time-varying channels across the different users. The diversity benefit is exploited by tracking the channel fluctuations of the users and scheduling transmissions to users when their instantaneous channel quality is near the peak. The diversity gain increases with the dynamic range of the fluctuations and is thus limited in environments with little scattering and/or slow fading. In such environments, we propose the use of multiple transmit antennas to induce large and fast channel fluctuations so that multiuser diversity can still be exploited. The scheme can be interpreted as opportunistic beamforming and we show that true beamforming gains can be achieved when there are sufficient users, even though very limited channel feedback is needed. Furthermore, in a cellular system, the scheme plays an additional role of opportunistic nulling of the interference created on users of adjacent cells. We discuss the design implications of implementing this scheme in a complete wireless system.	user correction - Legacy Corrections
YEAR	2002	INFERENCE
VENUE	IEEE Transactions on Information Theory	INFERENCE
VENUE TYPE	JOURNAL	INFERENCE
PAGES	1277--1294	INFERENCE
VOLUME	48	INFERENCE
CITATIONS	22 found	ParsCit 1.0