Sciweavers

TWC
2011
205views more  TWC 2011»
12 years 11 months ago
Quasi-Gray Labelling for Grassmannian Constellations
—This paper presents two polynomial-complexity techniques for assigning Gray-like binary labels to arbitrary Grassmannian constellations. In the first technique, the constellati...
Geoffrey W. K. Colman, Ramy H. Gohary, Mohamed A. ...
CORR
2010
Springer
68views Education» more  CORR 2010»
13 years 1 months ago
Communicating Under Channel Uncertainty
For a single transmit and receive antenna system, a new constellation design is proposed to combat errors in the phase estimate of the channel coefficient. The proposed constellati...
Naqueeb Warsi, Rahul Vaze, Tapan Shah
GLOBECOM
2010
IEEE
13 years 2 months ago
Achieving Full Rate Network Coding with Constellation Compatible Modulation and Coding
Network coding is an effective method to improving relay efficiency by reducing the number of transmissions. However, its performance is limited by several factors such as packet l...
Suhua Tang, Hiroyuki Yomo, Tetsuro Ueda, Ryu Miura...
TIT
2002
63views more  TIT 2002»
13 years 4 months ago
Structured unitary space-time autocoding constellations
We recently showed that arbitrarily reliable communication is possible within a single coherence interval in Rayleigh flat fading as the symbol-duration of the coherence interval ...
Thomas L. Marzetta, Babak Hassibi, Bertrand M. Hoc...
ECSCW
1997
13 years 5 months ago
Supporting the Flow of Information Through Constellations of Interaction
Abstract: In field studies designed to uncover opportunities for computationallyintensive business applications, we observed an interaction pattern we term "constellations&quo...
Tony Salvador, Sara A. Bly
VTC
2006
IEEE
158views Communications» more  VTC 2006»
13 years 10 months ago
An Adaptive-Scaling Algorithm for OFDM PAR Reduction Using Active Constellation Extension
Abstract— The Active Constellation Extension (ACE) technique is a lossless (in terms of throughput) Peak-to-Average Power Ratio (PAR) reduction technique that adaptively extends ...
Luqing Wang, Chintha Tellambura
PIMRC
2008
IEEE
13 years 11 months ago
Optimal constellation distortion for PAR reduction in OFDM systems
Abstract—The high peak-to-average-power ratio (PAR) of Orthogonal Frequency Division Multiplexing (OFDM) transmission systems significantly reduces the power efficiency or perf...
Moshe Malkin, Brian S. Krongold, John M. Cioffi