NDLI: Linear Transceiver Design for SINR Balancing in MIMO Downlink Channels

Content Provider	IEEE Xplore Digital Library
Author	Codreanu, M. Tolli, A. Juntti, M. Latva-aho, M.
Copyright Year	2007
Description	Author affiliation: Centre for Wireless Commun., Oulu Univ., Oulu (Codreanu, M.; Tolli, A.; Juntti, M.; Latva-aho, M.)
Abstract	We consider a single-cell multiple-input multiple-output (MIMO) downlink channel where linear transmission and reception strategy is employed. The base station (BS) transmitter is equipped with a scheduler using a simple opportunistic beamforming strategy, which associates an intended user for each of the transmitted data streams. For the case when the channel of the scheduled users is available at the BS, we propose a joint power control and linear transmit and receive beamformers design to optimally balance the SINR values of data streams under a total power budget. The proposed method can handle multiple antennas at the BS and at the mobile users with single and/or multiple data streams per scheduled user. We consider a general problem formulations which includes minimum SINR constraints on a subset of data streams and discuss possible particularizations which can be solved more efficiently. By exploiting the uplink-downlink SINR duality, we decompose the original optimization problem as a series of remarkably simpler optimization problems which can be efficiently solved by using standard convex optimization solvers. The simulations show that the algorithm converges fast to a solution, which can be a local optimum, but is still efficient. Only one iteration of the proposed method is enough to substantially outperform the zero forcing based solution.
Starting Page	1131
Ending Page	1135
File Size	1632708
Page Count	5
File Format	PDF
ISBN	9781424410088
DOI	10.1109/CHINACOM.2007.4469585
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-08-22
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Base stations Array signal processing Mobile antennas Downlink geometric programming Transceivers Vectors multiple-input multiple-output (MIMO) systems Transmitters Feedback Broadcast channels MIMO beamforming Signal to noise ratio
Content Type	Text
Resource Type	Article

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