Results 11 to 20 of about 147,755 (277)

Frame delay and loss analysis for video transmission over time-correlated 802.11A/G channels [PDF]

open access: yes, 2007
This paper presents simulation results for the transmission of unicast MAC frames over 802.11a/g. Fading channel models at various Doppler frequencies are developed to generate time- correlated SNR waveforms.
Bull, David   +4 more
core   +1 more source

Model of microwave link channel with adaptive modulation under the fading conditions [PDF]

open access: yesE3S Web of Conferences, 2022
Higher throughput requirements of the radio access network (RAN) of 5th generation (5G) network lead in turn to even more higher capacity require-ments of wireless backhaul segment.
Stepanets Irina, Odoevskii Sergei
doaj   +1 more source

On the Non-Coherent Wideband Multipath Fading Relay Channel [PDF]

open access: yes, 2010
We investigate the multipath fading relay channel in the limit of a large bandwidth, and in the non-coherent setting, where the channel state is unknown to all terminals, including the relay and the destination.
Fawaz, Nadia, Medard, Muriel
core   +1 more source

Closed-form Distribution and Analysis of a Combined Nakagami-lognormal Shadowing and Unshadowing Fading Channel

open access: yesJournal of Telecommunications and Information Technology, 2016
The realistic wireless channels face combined (time shared) Nakagami-lognormal shadowing and unshadowing fading because of time varying nature of radio channel and mobile user.
Rupender Singh, Meenakshi Rawat
doaj   +1 more source

Estimation of FBMC/OQAM Fading Channels Using Dual Kalman Filters

open access: yesThe Scientific World Journal, 2014
We address the problem of estimating time-varying fading channels in filter bank multicarrier (FBMC/OQAM) wireless systems based on pilot symbols. The standard solution to this problem is the least square (LS) estimator or the minimum mean square error ...
Mahmoud Aldababseh, Ali Jamoos
doaj   +1 more source

Wideband Fading Channels With Feedback [PDF]

open access: yesIEEE Transactions on Information Theory, 2010
The Rayleigh flat fading channel at low SNR is considered. With full channel state information (CSI) at the transmitter and receiver, its capacity is shown to be essentially SNR log(1SNR) nats/symbol, as SNR goes to zero. In fact, this rate can be achieved with a just one bit of CSI at the transmitter (per fading realization) and with no receiver CSI ...
Borade, Shashi, Zheng, Lizhong
openaire   +2 more sources

The Streaming-DMT of Fading Channels [PDF]

open access: yesIEEE Transactions on Information Theory, 2014
We consider the sequential transmission of a stream of messages over a block-fading multi-input-multi-output (MIMO) channel. A new message arrives at the beginning of each coherence block, and the decoder is required to output each message sequentially, after a delay of $T$ coherence blocks.
Ashish Khisti, Stark C. Draper
openaire   +2 more sources

Frequency estimation in multipath rayleigh-sparse-fading channels [PDF]

open access: yes, 2004
Maximum-likelihood (ML) data-aided frequency estimation in multipath Rayleigh-fading channels with sparse impulse responses is investigated. We solve this problem under the assumption that the autocorrelation matrix of the pilot signal can be ...
Baronkin, V M, Tozer, T C, Zakharov, Y V
core   +1 more source

Compensating for Channel Fading in DS-CDMA Communication Systems Employing ICA Neural Network Detectors [PDF]

open access: yesJournal of Systemics, Cybernetics and Informatics, 2005
In this paper we examine the impact of channel fading on the bit error rate of a DS-CDMA communication system. The system employs detectors that incorporate neural networks effecting methods of independent component analysis (ICA), subspace estimation of
David Overbye, Roland Priemer
doaj  

Channel Modelling and Performance Analysis of the Near Space based on the DS Signal System

open access: yesMATEC Web of Conferences, 2016
In order to describe the near space communication channel efficiently and analyse the the reasons that cause quality deterioration of ground-to-air communication link, design the Channel modelling program of the near space and establish the near space ...
Sun Ke, Hou Xiaomin, Zhao Qiang
doaj   +1 more source

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