Search results for "Rake receiver"

showing 4 items of 4 documents

An OFDM Receiver Exploiting Multipath Diversity

2008

We propose a novel receiver structure, to be employed with standard Orthogonal Frequency Division Multiplexing transmitters, capable of exploiting the multipath diversity of wireless channels. The proposed technique is based on cancellation of inter-block interference arising in the guard interval and linear detection techniques. It features a low implementation complexity and is easily generalized to MIMO systems and non-linear detection techniques.

Orthogonal frequency-division multiplexingbusiness.industryComputer scienceComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSDetectorInterference (wave propagation)Antenna diversityGuard intervalElectronic engineeringWirelessRake receiverbusinessComputer Science::Information TheoryDiversity schemeComputer networkCommunication channel
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Implementation of Universal Digital Architecture using 3D-NoC for Mobile Terminal

2014

International Conference on Control, Decision and Information Technologies (CoDIT), Ecole Natl Ingenieurs Metz, Metz, FRANCE, NOV 03-05, 2014; International audience; The need to integrate multiple wireless communication protocols into a single low-cost flexible hardware platform is prompted by the increasing number of emerging communication protocols and applications in modern embedded systems. So the current challenge is to design of new digital architectures, in addition to its ability to take over of many functions. In this paper we have identified similarities between the despreader units in Rake receiver and the processor element in FFT-SDF (Fast Fourier Transform-Single path Delay Fe…

RTL modelingComputer scienceOrthogonal frequency-division multiplexing[SPI] Engineering Sciences [physics]Common Operators02 engineering and technologyGeneric hardware architecturesFFT- SDF[SPI]Engineering Sciences [physics]Gate arrayVHDL[ SPI ] Engineering Sciences [physics]0202 electrical engineering electronic engineering information engineeringGeneric hardware architectures Rake receiver FFT- SDF Common Operators 3D-Network on chip RTL modelingField-programmable gate arraycomputer.programming_languageVirtexbusiness.industry020208 electrical & electronic engineering020206 networking & telecommunicationsDigital architectureRake receiverComputer architectureEmbedded systemRake receiver3D-Network on chipbusinessCommunications protocolcomputer
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Modelling and Analysis of Non-Stationary Multipath Fading Channels with Time-Variant Angles of Arrival

2017

In mobile radio channel modelling, it is generally assumed that the angles of arrival (AOAs) are independent of time. This assumption does in general not agree with real-world channels in which the AOAs vary with the position of a moving receiver. In this paper, we first present a mathematical model for the time-variant AOAs. This model serves as the basis for the development of two non-stationary multipath fading channels models. The statistical properties of both channel models are analysed with emphasis on the time-dependent autocorrelation function (ACF), time-dependent mean Doppler shift, time-dependent Doppler spread, and the Wigner-Ville spectrum. It is shown that these characteristi…

Computer scienceAutocorrelation020302 automobile design & engineering020206 networking & telecommunications02 engineering and technologyDelay spreadsymbols.namesakeFading distribution0203 mechanical engineering0202 electrical engineering electronic engineering information engineeringsymbolsRake receiverFadingStatistical physicsDoppler effectMultipath propagationCommunication channelComputer Science::Information Theory
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Sparse multipath channels: Modelling, analysis, and simulation

2013

A sparse multipath channel is characterized by a small number of randomly distributed scatterers. This study proposes a methodology for the modelling of sparse multipath channels. The new methodology is then used to develop a sparse narrowband multipath channel model by applying the sum-of-cisoids (SOC) principle. The statistical properties of the presented sparse SOC multipath channel model are studied. Analytical expressions are derived for the mean value, variance, autocorrelation function (ACF) and cross-correlation function (CCF) of the complex channel gain, as well as for the probability density function (PDF) of the envelope. Our study shows that mobile radio channels behave in spars…

Spatial correlationNarrowbandScatteringComputer scienceStatisticsAutocorrelationRake receiverAlgorithmMultipath propagationComputer Science::Information TheoryCentral limit theoremDelay spread2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)
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