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GLOBECOM
2007
IEEE
14 years 1 months ago
Soft Sensing and Optimal Power Control for Cognitive Radio
We consider a cognitive radio system where the secondary transmitter varies its transmit power based on all the information available from the spectrum sensor. The operation of th...
Sudhir Srinivasa, Syed Ali Jafar
CORR
2006
Springer
126views Education» more  CORR 2006»
13 years 6 months ago
The Gaussian Multiple Access Wire-Tap Channel
We consider the General Gaussian Multiple Access Wire-Tap Channel (GGMAC-WT). In this scenario, multiple users communicate with an intended receiver in the presence of an intellige...
Ender Tekin, Aylin Yener
VTC
2006
IEEE
114views Communications» more  VTC 2006»
14 years 21 days ago
Channel Capacity of BLAST based on the Zero-Forcing criterion
In this paper, we present an asymptotical analysis of channel capacity of Bell labs layered space-time (BLAST) architectures based on a zero-forcing (ZF) criterion in the sense of...
Heunchul Lee, Inkyu Lee
ICASSP
2011
IEEE
12 years 10 months ago
Robust frequency synchronization for an OFDMA uplink system disturbed by a Cognitive Radio system interference
In Cognitive Radio (CR) systems, spectrum sensing plays a key role to determine the free frequency bands. However, when the primaryuser (PU) signal spectrum exhibits localized fad...
Hector Poveda, Guillaume Ferre, Eric Grivel
TIP
2011
288views more  TIP 2011»
13 years 1 months ago
High Capacity Color Barcodes: Per Channel Data Encoding via Orientation Modulation in Elliptical Dot Arrays
—We present a new high capacity color barcode. The barcode we propose uses the cyan, magenta, and yellow (C,M,Y) colorant separations available in color printers and enables high...
Orhan Bulan, Gaurav Sharma