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VTC
2008
IEEE
207views Communications» more  VTC 2008»
16 years 1 months ago
Practical Results of Hybrid AOA/TDOA Geo-Location Estimation in CDMA Wireless Networks
—This paper describes a hybrid AOA/TODA Mobile Station (MS) location estimation method based on the CDMA wireless communications signals. The method utilized estimates the Angle ...
Ali Broumandan, Tao Lin, John Nielsen, Géra...
GLOBECOM
2007
IEEE
15 years 10 months ago
Spectral Efficiency of Cognitive Radio Systems
In this contribution1 , we investigate the idea of using cognitive radio to reuse locally unused spectrum to increase the total system capacity. We consider a multiband/wideband sy...
Majed Haddad, Aawatif Menouni Hayar, Méroua...
ICIAR
2005
Springer
16 years 5 days ago
Unequal Error Protection Using Convolutional Codes for PCA-Coded Images
Image communication is a significant research area which involves improvement in image coding and communication techniques. In this paper, Principal Component Analysis (PCA) is use...
Sabina Hosic, Aykut Hocanin, Hasan Demirel
EUROCRYPT
2003
Springer
15 years 12 months ago
CAPTCHA: Using Hard AI Problems for Security
We introduce captcha, an automated test that humans can pass, but current computer programs can’t pass: any program that has high success over a captcha can be used to solve an u...
Luis von Ahn, Manuel Blum, Nicholas J. Hopper, Joh...
VTC
2008
IEEE
120views Communications» more  VTC 2008»
16 years 1 months ago
A Comprehensive Performance Comparison of OFDM/TDM Using MMSE-FDE and Conventional OFDM
—Orthogonal frequency division multiplexing (OFDM) is currently under intense research for broadband wireless transmission due to its robustness against multipath fading. However...
Haris Gacanin, Fumiyuki Adachi