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» Optimized capacity bounds for the MIMO relay channel
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TWC
2008
117views more  TWC 2008»
14 years 9 months ago
On the design, selection algorithm and performance analysis of limited feedback transmit beamforming
Multiple-input multiple-output (MIMO) systems achieve significant diversity and array gains by using transmit beamforming. When complete channel state information (CSI) is not avai...
Alireza Ghaderipoor, Chintha Tellambura
CORR
2008
Springer
130views Education» more  CORR 2008»
14 years 8 months ago
Spectrum Allocation in Two-Tier Networks
Abstract-- Two-tier networks, comprising a conventional cellular network overlaid with shorter range hotspots (e.g. femtocells, distributed antennas, or wired relays), offer an eco...
Vikram Chandrasekhar, Jeffrey G. Andrews
TIT
2010
300views Education» more  TIT 2010»
14 years 4 months ago
Polar codes are optimal for lossy source coding
We consider lossy source compression of a binary symmetric source using polar codes and the low-complexity successive encoding algorithm. It was recently shown by Arikan that polar...
Satish Babu Korada, Rüdiger L. Urbanke
CORR
2008
Springer
101views Education» more  CORR 2008»
14 years 9 months ago
Unequal Error Protection: Some Fundamental Limits
Various scenarios are considered where some information is more important than other and needs better protection. A general theoretical framework for unequal error protection is d...
Shashi Borade, Baris Nakiboglu, Lizhong Zheng
MOBIHOC
2005
ACM
15 years 9 months ago
Power balanced coverage-time optimization for clustered wireless sensor networks
We consider a wireless sensor network in which sensors are grouped into clusters, each with its own cluster head (CH). Each CH collects data from sensors in its cluster and relays...
Tao Shu, Marwan Krunz, Sarma B. K. Vrudhula