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Dynamic wordlength calibration to reduce power dissipation in wireless OFDM systems
| Title: | Dynamic wordlength calibration to reduce power dissipation in wireless OFDM systems |
| Authors: | Kim, Jaeseong Browse this author | | Yoshizawa, Shingo Browse this author →KAKEN DB | | Miyanaga, Yoshikazu Browse this author →KAKEN DB |
| Issue Date: | 6-Dec-2010 |
| Publisher: | IEEE |
| Journal Title: | 2010 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS) |
| Start Page: | 628 |
| End Page: | 631 |
| Publisher DOI: | 10.1109/APCCAS.2010.5774944 |
| Abstract: | This paper describes low power architecture by using a dynamic wordlength technique in wireless orthogonal frequency division multiplexing (OFDM) system. The number of wordlength in digital signal processing (DSP) has to be carefully determined because wordlength affects system performance and hardware cost. Dynamic wordlength technique is applied to a fast Fourier transform (FFT) processor and a Viterbi decoder in OFDM receiver. The proposed method searches an optimum wordlength combination of FFT processor and Viterbi decoder by comparing output binary data while changing wordlengths. This operation is done by use of intervals in packet waiting. This approach leads to achieve the power reduction up to 23.9% with a desirable packet error rate (PER) in multipath channel environment. |
| Conference Name: | 2010 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS) |
| Conference Place: | Kuala Lumpur |
| Rights: | © 2010 IEEE. Reprinted, with permission, from Jaeseong Kim, Yoshizawa, S., Miyanaga, Y., Dynamic wordlength calibration to reduce power dissipation in wireless OFDM systems, 2010 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS), Dec. 2010. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Hokkaido University products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it. |
| Type: | proceedings (author version) |
| URI: | http://hdl.handle.net/2115/47343 |
| Appears in Collections: | 情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 金 在成
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