Results 11 to 20 of about 7,489 (260)
Performance analysis of energy detection over hyper-Rayleigh fading channels
The Journal of Engineering, 2015 This study investigates the performance of energy detection (ED)-based spectrum sensing over two-wave with diffused power (TWDP) fading channels, which have been found to provide accurate characterisation for a variety of fading conditions. A closed-form
Eleftherios Chatziantoniou +2 more
doaj +1 more source
On the Second-Order Statistics of Correlated Cascaded Rayleigh Fading Channels
International Journal of Antennas and Propagation, 2012 The second-order statistics of two correlated cascaded (double) Rayleigh fading channels are analyzed, where different relevant second-order cross-correlation functions of in-phase and quadrature components of the cascaded Rayleigh channels are derived ...
Yawgeng A. Chau, Karl Y.-T. Huang
doaj +1 more source
Capacity Performance of Adaptive Receive Antenna Subarray Formation for MIMO Systems
EURASIP Journal on Wireless Communications and Networking, 2007 Antenna subarray formation is a novel RF preprocessing technique that reduces the hardware complexity of MIMO systems while alleviating the performance degradations of conventional antenna selection schemes.
Athanasios G. Kanatas +1 more
doaj +2 more sources
Adaptive modulation in a slow Rayleigh fading channel [PDF]
Proceedings of PIMRC '96 - 7th International Symposium on Personal, Indoor, and Mobile Communications, 2002 A novel, uneven protection phase shift keying technique is proposed for the encoding of the required modulation scheme in an adaptive modem arrangement, which exhibits an improved performance in comparison to previously proposed schemes. The performance is derived numerically and a system dependent optimisation is presented.
Torrance, J, Hanzo, L
openaire +1 more source
Estimation of aircraft distances using transponder signal strength information
Cogent Engineering, 2018 The Federal Aviation Administration has recently mandated the installation of transponders that provide position reporting (Extended Mode S) in aircraft operating in most types of domestic controlled airspace by January 1, 2020.
John H. Mott
doaj +1 more source
Three-channel single-wavelength lidar depolarization calibration [PDF]
Atmospheric Measurement Techniques, 2018 Linear depolarization measurement capabilities were added to the CANDAC Rayleigh–Mie–Raman lidar (CRL) at Eureka, Nunavut, in the Canadian High Arctic in 2010. This upgrade enables measurements of the phases (liquid versus ice) of cold and mixed-phase
E. M. McCullough +7 more
doaj +1 more source
Sensors, 2015 Recently, a novel resource-efficient technique for the reporting channel transmissions in cooperative spectrum sensing was proposed. In this technique, secondary users are allowed to simultaneously send their local decisions to the fusion center, saving ...
Dayan Adionel Guimarães +1 more
doaj +1 more source
Channel-based spoofing detection in frequency-selective rayleigh channels [PDF]
IEEE Transactions on Wireless Communications, 2009 The radio channel response decorrelates rapidly as the transmitter changes location in an environment with rich scatterers and reflectors. Based on this fact, a channel-based authentication scheme was previously proposed to discriminate between transmitters at different locations, and thus to detect spoofing attacks in wireless networks. In this paper,
Liang Xiao 0003 +3 more
openaire +2 more sources
IEEE Access, 2018 In this paper, we investigate the statistical properties of double Hoyt fading channels, where the overall received signal is determined by the product of two statistically independent but not necessarily identically distributed single Hoyt processes ...
Nazih Hajri +4 more
doaj +1 more source
Extending and Merging the Purple Crow Lidar Temperature Climatologies Using the Inversion Method
EPJ Web of Conferences, 2016 Rayleigh and Raman scatter measurements from The University of Western Ontario Purple Crow Lidar (PCL) have been used to develop temperature climatologies for the stratosphere, mesosphere, and thermosphere using data from 1994 to 2013 (Rayleigh system ...
Jalali Ali, Sica R.J., Argall P. S.
doaj +1 more source