Results 11 to 20 of about 2,369 (180)

Analytical SIR for Self-Organizing Wireless Networks

open access: yesEURASIP Journal on Wireless Communications and Networking, 2009
The signal to interference ratio (SIR) in the presence of multipath fading, shadowing and path loss is a valuable parameter for studying the capacity of a wireless system.
Abdurazak Mudesir   +3 more
doaj   +2 more sources

Performance of Different Concatenated Coding Schemes for CDMA System

open access: yesJournal of Engineering, 2018
In this paper different channel coding and interleaving schemes in DS/CDMA system over multipath fading channel were used. Two types of serially concatenated coding were presented.
Zainab Majeed Abid
doaj   +1 more source

On the non-coherent wideband multipath fading relay channel [PDF]

open access: yes2010 IEEE International Symposium on Information Theory, 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. We propose a hypergraph model of the wideband multipath fading relay channel, and show that its min-cut is achieved by a non-coherent peaky ...
Nadia Fawaz, Muriel Médard
openaire   +4 more sources

Measuring the Impact of Beamwidth on the Correlation Distance of 60 GHz Indoor and Outdoor Channels

open access: yesIEEE Open Journal of Vehicular Technology, 2021
Due to narrow beamwidth and channel sparseness, millimeter-wave receivers will detect much less multipath than their microwave counterparts, fundamentally changing the small-scale fading properties.
Aidan Hughes   +6 more
doaj   +1 more source

Frequency Estimation in Multipath Rayleigh-Sparse-Fading Channels [PDF]

open access: yesIEEE Transactions on Wireless Communications, 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 approximated by a diagonal matrix, the fading of different path amplitudes are independent from each other, and
Zakharov, Y V, Baronkin, V M, Tozer, T C
openaire   +2 more sources

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

Sensing Coverage Prediction for Wireless Sensor Networks in Shadowed and Multipath Environment

open access: yesThe Scientific World Journal, 2013
Sensing coverage problem in wireless sensor networks is a measure of quality of service (QoS). Coverage refers to how well a sensing field is monitored or tracked by the sensors.
Sushil Kumar, D. K. Lobiyal
doaj   +1 more source

Performance Analysis of MIMO STBC System in Flat Fading and Frequency Selective Fading Channels

open access: yesJournal of Electrical, Electronics and Informatics, 2019
Multiple Input Multiple Output (MIMO) technology is a technique that can be used to overcome multipath fading. The multipath fading is caused by signals coming from several paths that experience different attenuations, delays and phases.
Pebri Yeni Samosir   +3 more
doaj   +1 more source

Analysis of Three-Dimensional Spatial Selectivity for Rician Channel [PDF]

open access: yesRadioengineering, 2018
The spatial selectivity of multipath fading determines the spatial diversity strategy to increase the performance of the communication system. This paper analyses the three-dimensional (3-D) spatial selectivity of Rician channel to strive to alleviate ...
D. Du, X. Zeng, X. Jian, F. Yu, L. Miao
doaj  

Teknik Pengiriman File Audio Berbasis Software Defined Radio pada Kanal Komunikasi dalam Ruangan dengan Multicarrier OFDM

open access: yesJurnal Elkomika
ABSTRAK Transmisi audio pada kanal indoor dipengaruhi oleh efek multipath fading yang dapat mengganggu kualitas sinyal. Multicarrier OFDM digunakan sebagai solusi untuk mengatasi fenomena ini.
FIGA AGHANI ROSYID   +2 more
doaj   +1 more source

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