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Blind Carrier Frequency Offset Estimation In SISO, MIMO, And Multiuser OFDM Systems
White Papers Relying on a kurtosis-type criterion, a low-complexity blind carrier frequency offset (CFO) estimator is developed for orthogonal frequency-division multiplexing (OFDM) systems. The paper demonstrates analytically how identifiability and...
[March 30, 2005, 0:00]
Blind Channel Identification And Equalization In OFDM-Based Multi-Antenna Systems
White Papers This paper introduces an algorithm for blind channel identification and equalization in OFDM-based multi-antenna systems. Wireless systems employing multiple antennas at the transmitter and the receiver have recently been shown to have the...
[March 28, 2005, 0:00]
Blind Israeli Hacking Brothers Baffle Authorities
News A pair of blind computer-mavericks from Israel have been detained and charged with cracking into the Israeli Defence Force radio station using customised braille and voice-activated gadgetry. Munther and Muzhir Badir have been blind since birth but...
[October 22, 1999, 11:36]
Blind Separation Of Speech With A Switched Sparsity And Temporal Criteria
White Papers A Blind Signal Separation algorithm (SCAtemp) that exploits both the sparse time-frequency representation and temporal structure of speech is proposed. SCAtemp compares each speech signal's adherence to the sparsity and temporal criteria, before...
[May 31, 2007, 0:00]
Blind Identification Of OFDM Channel Using Receiver Diversity
White Papers By exploiting channel diversity with multiple receive antennas, the paper proposes a blind deterministic algorithm that can perfectly recover the channel response using only a single OFDM block. In addition to being data efficient, the proposed...
[April 11, 2007, 0:00]
A Year Ago: Blind Brother Hackers Appear In Court
News Blind Israeli brother hackers accused of 42 cybercrimes Three Israeli brothers -- all blind, all hackers -- appeared in court in Israel Tuesday accused of 42 separate cybercrimes. All three brothers have been blind since birth but were able to...
[November 2, 2000, 6:16]
Blind Equalization In OFDM-Based Multi-Antenna Systems
White Papers This paper introduces an algorithm for blind channel identification and equalization in OFDM-based multi-antenna systems. Wireless systems employing multiple antennas at the transmitter and the receiver can achieve extraordinary bit rates.
[March 28, 2005, 0:00]
Blind Adaptive Channel Estimation In OFDM Systems
White Papers This paper considers the problem of blind channel estimation in zero padding OFDM systems. For the first time, blind adaptive algorithms are proposed that identify the impulse response of the multipath channel.
[November 1, 2004, 23:00]
Blind Man Faces Prosecution For Listening To Child Porn
News A blind South African man may be the first person in the world to be prosecuted for accessing child pornography on the Internet without looking at it. The blind suspect could be the first person in the world to receive a prison sentence for...
[June 25, 2001, 18:24]
Blind Brother Hackers Appear In Court
News Three Israeli brothers -- all blind, all hackers -- appeared in court in Israel Tuesday accused of 42 separate cyber-crimes. All three brothers have been blind since birth but were able to weave their computer wizardry thanks to specially created...
[November 2, 1999, 14:02]
Blind Channel Estimation For DS-CDMA
White Papers While existing blind methods suffer from high computational complexity (due to large SVDs) and sensitivity to accurate knowledge of the noise subspace rank, the proposed method overcomes both problems.
[August 1, 2004, 0:00]
Blind Channel Estimation For Downlink CDMA Systems
White Papers While existing blind methods suffer from high computational complexity and sensitivity to accurate knowledge of the noise subspace rank, the proposed method overcomes both problems. The problem of channel estimation in code-division multiple-access...
[August 1, 2004, 0:00]
Blind Channel Identification And Equalization In OFDM-Based Multiantenna Systems
White Papers This paper introduces an algorithm for blind channel identification and equalization in OFDM-based multiantenna systems. Wireless systems employing multiple antennas at the transmitter and the receiver have recently been shown to have the potential...
[October 28, 2004, 0:00]
Blind Surfers Win Concessions From Travel Sites
News Priceline.com and Ramada.com have agreed to make their Web pages easier to navigate for the blind and visually impaired as part of a settlement with New York Attorney General Eliot Spitzer. The settlement, announced on Friday, is designed to bring...
[August 23, 2004, 8:25]
Photos: Old PCs Help Africa's Blind
News One organisation that Computer Aid is currently partnering with is the Kenyan Union of the Blind (KUB). Executive officer Martin Kieti, himself partially sighted, explained the challenges faced by blind children and students in Kenya and how IT can...
[February 13, 2007, 15:47]
Xerox Copier Can 'talk' To The Blind
Talkback need to know about blind people
[February 20, 2005, 10:23]
A Blind Frequency Offset Estimator For OFDM/OQAM Systems
White Papers A new blind carrier frequency estimator is introduced herein for OFDM- /OQAM systems by exploiting the non-circularity of the received signal. Like other OFDM-like systems, OFDM/OQAM systems are very sensitive to carrier frequency offset.
[April 11, 2007, 0:00]
Olympics Web Site Riddled With Blind Spots
News He did, however, point to individual pages of the Web site -- the opening page, sport schedule page and torch relay page -- all of which contained images no blind user would know were there. Complainant Bruce Maguire, who is blind, first made the...
[August 9, 2000, 13:22]
Totally Blind Channel Estimation For OFDM On Fast Varying Mobile Radio Channels
White Papers A new blind channel estimation scheme for OFDM-systems is proposed based on the ML-principle. A novel approach is also proposed for resolving the phase ambiguity of the blind channel estimate without the need for any reference symbols.
[April 13, 2007, 0:00]
CCNA Curriculum No Barrier To Motivated Blind Student
White Papers For Tony, who was born blind, the lab-oriented nature of the Cisco classes might have posed an insuperable barrier. Tony McCloskey did something rather unusual, even though he already had a degree in electrical engineering; he enrolled in the Cisco...
[April 13, 2007, 0:00]
