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Prevalence of migraine and its associated factors among patients at primary healthcare centers in Saudi Arabia: A cross-sectional study. [PDF]

Medicine (Baltimore)
Al-Khateeb BF, Shubair MM, Angawi K, Alkathiry D, Aldubikhi AI, Zaidan AM, Toivola P, Salem SS, Alhabas M, Binhowaimel N, Aldossary KM, El-Metwally A.   +11 more
europepmc   +1 more source

Longitudinal associations between PTSD symptom clusters and domains of hazardous drinking among a cohort of United States Army Reserve and National Guard soldiers. [PDF]

Alcohol Clin Exp Res (Hoboken)
Hoopsick RA, McCormick-Cisse M, Homish DL, Homish GG.   +3 more
europepmc   +1 more source

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Variable Guard Interval for OFDM based WLANs

2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications, 2006
The dynamic selection of guard interval in orthogonal frequency division multiplexing (OFDM) based wireless local area network (WLAN) systems is described in this work. It derives an algorithm and provides its performance merit for implementing variable guard interval (VGI). The proposed system improves mean, outage and maximum throughput significantly
Suvra Sekhar Das, Muhammad Imadur Rahman, Frank H. P. Fitzek, Ramjee Prasad   +3 more
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Analysis of OFDM Receiver with Insufficient Guard Interval

2009 IEEE Wireless Communications and Networking Conference, 2009
In this paper, we propose a novel receiver consists of the Inter Symbol Interference (ISI) canceller and the turbo equalizer for orthogonal frequency division multiplexing (OFDM) systems over frequency selective fading channels where the multipath delay exceeds the guard interval duration.
Zhonghao Zhang, Baojin Li, Yongyu Chang, Dacheng Yang   +3 more
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OFDM Guard Interval: Analysis and Observations

2007 IEEE International Conference on Acoustics, Speech and Signal Processing - ICASSP '07, 2007
Orthogonal frequency division multiplexing (OFDM) is a modulation technique that is used in many modern digital communication systems and has been explored in numerous publications. Specifically, the tradeoff between throughput and ICI/ISI (intercarrier interference/intersymbol interference), which affects the length of the guard interval (GI) is well ...
Ori Landau, Anthony J. Weiss
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Utilizing OFDM Guard Interval for Spectrum Sensing

2007 IEEE Wireless Communications and Networking Conference, 2007
Spectrum sensing is crucial for dynamic spectrum management systems. In this paper, we propose a scheme that utilizes the guard interval of OFDM symbol at the transmitter for spectrum sensing. The cyclic prefix is not inserted in the guard interval at the transmitter, whereas the circulant convolution is secured at the OFDM receiver through the ...
Nilesh Khambekar, Liang Dong 0001, Vipin Chaudhary   +2 more
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