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TSP
2010
13 years 2 months ago
Adaptive design of OFDM radar signal with improved wideband ambiguity function
We propose an adaptive technique to design the spectrum of an orthogonal frequency division multiplexing (OFDM) waveform to improve the radar's wideband ambiguity function (WA...
Satyabrata Sen, Arye Nehorai
ICC
2007
IEEE
170views Communications» more  ICC 2007»
13 years 11 months ago
Adaptive Power Loading for OFDM-Based Cognitive Radio Systems
Abstract--Cognitive radio (CR) technology is an innovative radio design philosophy which aims to increase spectrum utilization by exploiting unused spectrum in dynamically changing...
Gaurav Bansal, Md. Jahangir Hossain, Vijay K. Bhar...
TSP
2008
118views more  TSP 2008»
13 years 7 months ago
Maximum-Likelihood Detection of Orthogonal Space-Time Block Coded OFDM in Unknown Block Fading Channels
For orthogonal space-time block coded orthogonal frequency division multiplexing (OSTBC-OFDM) systems, many of the existing blind detection and channel estimation methods rely on t...
Tsung-Hui Chang, Wing-Kin Ma, Chong-Yung Chi
JCM
2007
134views more  JCM 2007»
13 years 7 months ago
Performance Analysis of Zero-IF MIMO OFDM Transceivers with IQ Imbalance
Abstract— This contribution analytically studies the influence of IQ mismatch on the performance of multiple-antenna orthogonal frequency division multiplexing (OFDM) systems ba...
Tim C. W. Schenk, Erik R. Fledderus, Peter F. M. S...
WSC
2007
13 years 9 months ago
An elliptical cryptographic algorithm for RF wireless devices
In this paper, we propose a new asymmetric cryptographic algorithm (HOOD CRYPT) based on the Elliptical Curve Cryptographic approach. The algorithm describes how an orthogonal fre...
Robert Steven Owor, Khalil Dajani, Zephyrinus Okon...