A DFT-based channel estimation scheme for IEEE 802.16e OFDMA systems

Szu Lin Su, Yung Chuan Lin, Chieh Chih Hsu, Gene C.H. Chuang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Recent years, Orthogonal Frequency Division Multiplexing (OFDM) has been widely applied to various digital communication systems. WiMAX (Worldwide Interoperability for Microwave Access) holds a combination of fixed and mobile broadband wireless access techniques. IEEE 802.16e is the specification designed for WiMAX system in application of mobile environments. In order to achieve robust performance, one of the most important steps is the channel estimation procedure based on limited number of pilot signals. Owing to the channel's time variant characteristic caused by user's mobility and irregular arrangement of pilot signals in 802.16e system, the exact channel estimation is more difficult to achieve for this system. In this paper, under the consideration of the effects of mobility and AWGN, we propose a DFT-Based OFDM channel estimation scheme for the WiMAX systems. Simulation results show that the proposed adaptive channel estimation scheme can keep good system performance.

Original languageEnglish
Title of host publication12th International Conference on Advanced Communication Technology
Subtitle of host publicationICT for Green Growth and Sustainable Development, ICACT 2010 - Proceedings
Pages775-779
Number of pages5
Publication statusPublished - 2010 May 28
Event12th International Conference on Advanced Communication Technology: ICT for Green Growth and Sustainable Development, ICACT 2010 - , Korea, Republic of
Duration: 2010 Feb 72010 Feb 10

Publication series

NameInternational Conference on Advanced Communication Technology, ICACT
Volume1
ISSN (Print)1738-9445

Other

Other12th International Conference on Advanced Communication Technology: ICT for Green Growth and Sustainable Development, ICACT 2010
CountryKorea, Republic of
Period10-02-0710-02-10

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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