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GLOBECOM
2007
IEEE
14 years 4 months ago
Opportunistic Feedback in OFDMA Downlink
—This paper presents an opportunistic feedback (OF) protocol that reduces the amount of channel-state-information (CSI) feedback for the OFDMA downlink system. The OF protocol as...
Rajiv Agarwal, Vineet Abhishek, Rath Vannithamby, ...
ICOIN
2007
Springer
14 years 3 months ago
Collision-Free Downlink Scheduling in the IEEE 802.15.4 Network
Abstract. IEEE 802.15.4 is the Low-Rate Wireless Personal Area Network (LR-WPAN) standard that is suitable for wireless sensor networks and wireless home networks among others. The...
Sangki Yun, Hyogon Kim
JSAC
2007
69views more  JSAC 2007»
13 years 9 months ago
Multi-Antenna Downlink Channels with Limited Feedback and User Selection
Abstract— We analyze the sum-rate performance of a multiantenna downlink system carrying more users than transmit antennas, with partial channel knowledge at the transmitter due ...
Taesang Yoo, Nihar Jindal, Andrea J. Goldsmith
CORR
2007
Springer
93views Education» more  CORR 2007»
13 years 9 months ago
Opportunistic Scheduling and Beamforming for MIMO-SDMA Downlink Systems with Linear Combining
Opportunistic scheduling and beamforming schemes are proposed for multiuser MIMO-SDMA downlink systems with linear combining in this work. Signals received from all antennas of ea...
Man-On Pun, Visa Koivunen, H. Vincent Poor
ICC
2009
IEEE
130views Communications» more  ICC 2009»
13 years 7 months ago
User Profiling: A Method for Limited Feedback in OFDMA Systems
In the OFDMA downlink, obtaining Channel State Information (CSI) from users is necessary for the Base Station (BS) to optimize network performance by intelligently allocating resou...
Vinay R. Majjigi, Rajiv Agarwal, John M. Cioffi