NDLI: Maximum weighted sum rate multi-user MIMO amplify-and-forward for two-phase two-way relaying

Content Provider	IEEE Xplore Digital Library
Author	Negro, F. Ghauri, I. Slock, D.T.M.
Copyright Year	2010
Description	Author affiliation: Mobile Communications Department, EURECOM, 2229 Route des Crêtes, BP 193, 06904 Sophia Antipolis Cedex, France (Negro, F.; Slock, D.T.M.) \|\| Infineon Technologies France SAS, GAIA, 2600 Route des Crêtes, 06560 Sophia Antipolis Cedex, France (Ghauri, I.)
Abstract	A base station (BS) transmits (Tx) and receives (Rx) signals to and from multiple mobile users (MU) through a two-way amplify and forward (AF) relay station (RS) using a two-phase protocol. The BS and the RS are both equipped with multiple antennas. In the first phase (time or frequency), the BS and all MU transmit their signals to the RS. In the second phase, the relay transmits towards the BS and MU a transformed signal in a broadcast (BC) fashion. We present a Weighted Sum Rate (WSR) maximizing approach. The optimization problem is similar as e.g., the multi-input multi-output (MIMO) BC where instead of alternating between Tx and Rx filters, one now alternates between Tx filters at BS and RS. Furthermore, we show that in the two-phase relaying considered here, there is not only a rate region for the MU in the downlink, but the coupled optimization of the BS transmitter and the RS receiver/transmitter leads in fact to an uplink/downlink rate region. Different UL and DL rates in this region can be achieved through rate tradeoffs across individual users.
Starting Page	2715
Ending Page	2720
File Size	310657
Page Count	6
File Format	PDF
ISBN	9781424480173
e-ISBN	9781424480166
DOI	10.1109/PIMRC.2010.5671802
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-09-26
Publisher Place	Turkey
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Magnetic resonance imaging MIMO Optimization Downlink Scattering Receivers
Content Type	Text
Resource Type	Article

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