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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Zheng Yuanjin |
| Copyright Year | 2003 |
| Description | Author affiliation: Inst. of Microelectron., Singapore, Singapore (Zheng Yuanjin) |
| Abstract | In this paper, a new on-line channel estimation and tracking method for wireless OFDM systems based on comb-type pilots is developed. Long training sequences are used to estimate the channel response in frequency domain, and a scalar Kalman filtering scheme is designed to refine the channel estimation. To track the channel variations during a long burst packet, estimated pilots via a vector Kalman filtering are used to linearly interpolate and modify the estimated channel response. Both channel AWGN and state variable noise variance are adaptively estimated. Furthermore, to overcome the phase changes across the symbols owing to frequency offset estimation error, pilot based phase compensation scheme is incorporated. The complete algorithm can be processed in real time with much better performance than training sequence based or pilots based channel estimation methods. Simulation results based on 802.11a wireless LAN standard are presented. |
| Sponsorship | IEEE Circuits & Syst. Soc Mahanakorn Univ. Technol |
| File Size | 306803 |
| File Format | |
| ISBN | 0780377613 |
| DOI | 10.1109/ISCAS.2003.1205873 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-05-25 |
| Publisher Place | Thailand |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Channel estimation OFDM Kalman filters Filtering Frequency estimation AWGN Frequency domain analysis Additive white noise Gaussian noise State estimation |
| Content Type | Text |
| Resource Type | Article |
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