Adaptive Symbol Length for OFDM Systems in Doubly Selective Channels

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F09%3A00160222" target="_blank" >RIV/68407700:21230/09:00160222 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Adaptive Symbol Length for OFDM Systems in Doubly Selective Channels
Original language description
Symbol length is an important factor that can affect the spectrum efficiency and the performance of Orthogonal Frequency Division Multiplexing OFDM system. However, the symbol length is usually fixed in conventional OFDM systems, which decreases the spectrum efficiency considerably, especially in a mobile environment. This paper introduces an adaptive OFDM system in which the delay spread and Doppler spread are estimated at the receiver and according to their estimated values, the transmitter vary the symbol length such that the Bit Error Rate BER is always around a certain predetermined value. The value of the BER is chosen according to the type of the transmitted information. Simulation has been implemented and the results show that the proposed adaptive algorithm gives an improvement in the total throughput of the system without significantly sacrificing the BER performance.
Czech name
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Czech description
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Project
<a href="/en/project/GA102%2F09%2F0314" target="_blank" >GA102/09/0314: Investigation of metamaterials and microwave structures with the help of noise spectroscopy and magnetic resonance</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the 2009 Asia Pacific Microwave Conference
ISBN
978-1-4244-2801-4
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
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Publisher name
IEEE Singapore
Place of publication
Singapore
Event location
Singapore
Event date
Dec 7, 2009
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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