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Peak-to-Average-Pow...
Peak-to-Average-Power-Ratio (PAPR) reduction in WiMAX and OFDM/A systems
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- Khademi, Seyran, 1981 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Svantesson, T. (author)
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- Viberg, Mats, 1961 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Eriksson, Thomas, 1964 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2011-08-09
- 2011
- English.
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In: EURASIP Journal on Advances in Signal Processing. - : Springer Science and Business Media LLC. - 1687-6180. ; , s. Article Number: 38-
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Abstract
Subject headings
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- A peak to average power ratio (PAPR) reduction method is proposed that exploits the precoding or beamforming mode in WiMAX. The method is applicable to any OFDM/A systems that implements beamforming using dedicated pilots which use the same beamforming antenna weights for both pilots and data. Beamforming performance depends on the relative phase shift between antennas, but is unaffected by a phase shift common to all antennas. PAPR, on the other hand, changes with a common phase shift and this paper exploits that property. An effective optimization technique based on sequential quadratic programming is proposed to compute the common phase shift. The proposed technique has several advantages compared with traditional PAPR reduction techniques in that it does not require any side-information and has no effect on power and bit-error-rate while providing better PAPR reduction performance than most other methods.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- sequential
- WiMAX
- OFDM
- PAPR reduction
- PTS
- phase optimization
- quadratic programing
Publication and Content Type
- art (subject category)
- ref (subject category)
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