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

研究成果: Conference contribution

4 引文 斯高帕斯(Scopus)

摘要

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.

原文English
主出版物標題12th International Conference on Advanced Communication Technology
主出版物子標題ICT for Green Growth and Sustainable Development, ICACT 2010 - Proceedings
頁面775-779
頁數5
出版狀態Published - 2010 五月 28
事件12th International Conference on Advanced Communication Technology: ICT for Green Growth and Sustainable Development, ICACT 2010 - , Korea, Republic of
持續時間: 2010 二月 72010 二月 10

出版系列

名字International Conference on Advanced Communication Technology, ICACT
1
ISSN(列印)1738-9445

Other

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

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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