Results 11 to 20 of about 878,777 (290)
Impact of Imperfect Channel State Information on RS Coding Aided Hybrid-ARQ in Rayleigh Fading Channels [PDF]
, 2010 Hybrid Automatic-Repeat-reQuest (ARQ) schemes are capable of maintaining reliable communications for transmission over hostile wireless channels. In coherent detection aided schemes, the achievable performance substantially depends on the accuracy of ...
H. A. Ngo +3 more
core +1 more source
Error-bound formulation for multichannel reception of M-DPSK and pilot-aided M-PSK over Rayleigh-fading channels with postdetection combining [PDF]
, 2004 Upper bounds for symbol-error probability are developed for multichannel reception of M-ary phase-shift keying (M-PSK) over frequency-flat Rayleigh-fading channels.
Chow, YC, McGeehan, JP
core +1 more source
Exact BER Performance of Asynchronous DS-CDMA Systems using Quadriphase Spreading and QPSK Modulation over Rayleigh Channels [PDF]
, 2006 An accurate closed-form expression is derived for calculating the average BER in an asynchronous DS-CDMA system using random complex-valued spreading sequences for transmission over Rayleigh channels. This accurate solution is based on the Characteristic
Liu, X., L. Hanzo, Hanzo, L., Xiang Liu
core +2 more sources
MLSE receiver for the dispersive Rayleigh fading channel [PDF]
Proceedings of ICC'97 - International Conference on Communications, 2002 A maximum likelihood sequence estimator for the dispersive Rayleigh fading channel is developed. Following [1, 2], the MLSE uses a Kalman based channel estimator to acquire the channel parameters necessary to formulate the maximum likelihood metric. However, unlike the MLSE receiver presented in [1, 2], the proposed receiver uses the f-power series ...
Leon, Wing Seng, Taylor, Desmond P.
openaire +2 more sources
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
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
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
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