Sunday 25 January 2009

Wseas Transactions

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Transactions: WSEAS TRANSACTIONS ON COMMUNICATIONS
Transactions ID Number: 32-171
Full Name: Lamia Chaari
Position: Associate Professor
Age: ON
Sex: Female
Address: route mahdia cité elomran rue nassim N° 46 elbosten sfax
Country: TUNISIA
Tel: (+216)97589752
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E-mail address: lamia.chaari@tunet.tn
Other E-mails: lamia.chaari@enis.rnu.tn
Title of the Paper: An adaptive coded modulation with multi-levels QoS analysis in multimedia environment
Authors as they appear in the Paper: Lamia Chaari, Mohamed Fourati, Nouri Masmoudi, Lotfi Kamoun
Email addresses of all the authors: lamia.chaari@tunet.tn,fourati@tunet.tn,lotfi.kamoun@isecs.rnu.tn
Number of paper pages: 10
Abstract: This article proposes an adaptive coded modulation (ACM) with multi-levels qualities of service analysis, which can be used to perform physical layer functions in software radio receivers for beyond third generation systems. ACM approche employs multiple coding and modulation schemes in order to adapt instantaneously spectral efficiency to the signal-to-noise ratio variations SNR. The idea is to study transmission schemes performance which allow dynamic bandwidth sharing among various services in multimedia mobile and wireless networks in different channel environments. The aim is to select the appropriate modulation and channel coding modes based on signal quality measurement via a decision feedback block (DFB). Decision taken by the DFB block is based on different QoS parameters that depend in class and type of multimedia traffic. The DBF block is introduced in order to mitigate the channel quality fluctuations. The channel coded adaptive modulation schemes can !
be viewed as a lower complexity alternative of mitigating the channel quality fluctuations in comparison to multiple-transmitter and multiple-receiver. Implementing DFB necessitate to simulate and analyze different combinations between modulation and channel coding blocs for different data types.
Keywords: Channel coding, adaptive modulation, Signaling, image, Multimedia, SDR
EXTENSION of the file: .doc
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