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184
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IJMSO
2007
106views more  IJMSO 2007»
15 years 6 months ago
A Semantic Web system for supporting teachers using ontology alignment
: In Japan, it is important to provide teachers of Information Technology Education (IT) with a powerful help system that can locate and provide access to a variety of useful infor...
Toshinobu Kasai, Haruhisa Yamaguchi, Kazuo Nagano,...
TCOM
2008
73views more  TCOM 2008»
15 years 6 months ago
Pulse Construction in OFDM Systems Via Convex Optimization
In order to reduce the inter-carrier interference (ICI) produced by frequency offset in OFDM systems, we set up an optimization problem to find the transmission pulse which maximi...
J. Xu, Thomas Strohmer
209
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TWC
2008
139views more  TWC 2008»
15 years 6 months ago
Statistical Multimode Transmit Antenna Selection for Limited Feedback MIMO Systems
In a wireless multiple-input multiple-output (MIMO) system, transmit antenna selection is an effective means of achieving good performance with low complexity. We consider spatial ...
Chang Soon Park, Kwang Bok Lee
DAC
2001
ACM
16 years 7 months ago
Design of Half-Rate Clock and Data Recovery Circuits for Optical Communication Systems
This paper describes the design of two half-rate clock and data recovery circuits for optical receivers. Targeting the data rate of 10-Gb/s, the rst implementation incorporates a ...
Jafar Savoj, Behzad Razavi
CCECE
2009
IEEE
16 years 1 months ago
On the second-order cyclostationarity for joint signal detection and classification in cognitive radio systems
—Spectrum awareness is a crucial first step of a cognitive radio (CR). This provides information necessary for the CR to adapt to the radio frequency environment, and involves re...
Qiyun Zhang, Octavia A. Dobre, Sreeraman Rajan, Ro...