Performance Analysis of DFT Based Channel Estimation in OFDM System

Md. Muktar Hossain

ISBN 10: 3659540609 / ISBN 13: 9783659540608

Published by LAP LAMBERT Academic Publishing Aug 2014, 2014

About this Item

This item is printed on demand - Print on Demand Titel. Neuware -In this book the channel estimation techniques for OFDM systems based on Block Type Pilot arrangement are investigated. Finally, the DFT based channel estimation technique is performed which gives better performance over LS and MMSE based channel estimation.With same SNR, the BER of DFT based channel estimation is less than the BER of LS and MMSE based channel estimation. The MMSE estimator has good performance but high complexity. The LS estimator has low complexity, but its performance is not as good as that MMSE estimator basically at low SNR. Block Type Pilot arrangement is suitable for frequency-selective channels. For the fast-fading channels, however, it might incur too much overhead to track the channel variation by reducing the pilot symbol period.As the use of pilot symbols for channel estimation decrease the spectrum efficiency of the wireless communication systems, it will be beneficial if we can adaptively change the number of pilot tones depending on the channel condition through some feedback information.Books on Demand GmbH, Überseering 33, 22297 Hamburg 60 pp. Englisch.

Seller Inventory # 9783659540608

Bibliographic Details

• Title: Performance Analysis of DFT Based Channel Estimation in OFDM System
• Publisher: LAP LAMBERT Academic Publishing Aug 2014
• Publication Date: 2014
• Language: English
• ISBN 10: 3659540609
• ISBN 13: 9783659540608
• Binding: Taschenbuch
• Condition: Neu

About this title

Synopsis

In this book the channel estimation techniques for OFDM systems based on Block Type Pilot arrangement are investigated. Finally, the DFT based channel estimation technique is performed which gives better performance over LS and MMSE based channel estimation.With same SNR, the BER of DFT based channel estimation is less than the BER of LS and MMSE based channel estimation. The MMSE estimator has good performance but high complexity. The LS estimator has low complexity, but its performance is not as good as that MMSE estimator basically at low SNR. Block Type Pilot arrangement is suitable for frequency-selective channels. For the fast-fading channels, however, it might incur too much overhead to track the channel variation by reducing the pilot symbol period.As the use of pilot symbols for channel estimation decrease the spectrum efficiency of the wireless communication systems, it will be beneficial if we can adaptively change the number of pilot tones depending on the channel condition through some feedback information.

About the Author

Md. MuktarHossain received B.Sc. in Electronics and Telecommunication Engineering from Rajshahi University of Engineering and Technology (RUET), Bangladesh in 2013. His research interests include Wireless Communication, GSM Network, Fiber Optic communication and Digital Signal Processing.