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ICC
2009
IEEE
160views Communications» more  ICC 2009»
14 years 2 months ago
Application of Phase Shift in Coherent Multi-Relay MIMO Communications
—In this paper we propose a new low feedback and low complexity scheme that adjusts the phases at the relays, thus allowing for the coherent combining of signals from multiple re...
Yi Zheng, Hani Mehrpouyan, Steven D. Blostein
CSCW
2012
ACM
12 years 3 months ago
Investigating effects of visual and tactile feedback on spatial coordination in collaborative handheld systems
Mobile and handheld devices have become platforms to support remote collaboration. But, their small form-factor may impact the effectiveness of the visual feedback channel often u...
Koji Yatani, Darren Gergle, Khai N. Truong
TCOM
2008
101views more  TCOM 2008»
13 years 7 months ago
Transmit beamforming for space-frequency coded MIMO-OFDM systems with spatial correlation feedback
Abstract--This paper addresses the problem of joint optimization of transmit beamforming and space-frequency (SF) coding for MIMO-OFDM systems with spatial correlation feedback in ...
Ahmed K. Sadek, Weifeng Su, K. J. Ray Liu
WIOPT
2011
IEEE
12 years 11 months ago
Network utility maximization over partially observable Markovian channels
Abstract—This paper considers maximizing throughput utility in a multi-user network with partially observable Markov ON/OFF channels. Instantaneous channel states are never known...
Chih-Ping Li, Michael J. Neely
CORR
2006
Springer
86views Education» more  CORR 2006»
13 years 7 months ago
Maximum Entropy MIMO Wireless Channel Models
In this contribution, models of wireless channels are derived from the maximum entropy principle, for several cases where only limited information about the propagation environmen...
Maxime Guillaud, Mérouane Debbah, Aris L. M...