NDLI: Crest factor reduction of an OFDM/WiMAX network

Content Provider	IEEE Xplore Digital Library
Author	Mugala, S. Butime, J. Okello, D.
Copyright Year	2011
Description	Author affiliation: Department of Electrical and Computer Engineering, School of Engineering, Art, Design and Technology (CEDAT), Makerere University, Kampala, P.O. Box 7062, Uganda (Mugala, S.; Butime, J.; Okello, D.)
Abstract	African countries lag behind the rest of the world in their use of Information and Communication Technologies (ICTs). To reduce the digital divide quickly and cost-effectively, wireless networks are considered. WiMAX (Worldwide Interoperability for Microwave Access) is a wireless broadband access technology that uses Orthogonal Frequency Division Multiplexing (OFDM) which is a multicarrier modulation scheme. OFDM presents a problem of a high crest factor or Peak to Average Power Ratio (PAPR). To circumvent this problem either High Power Amplifiers (HPAs) with large dynamic range or PAPR reduction techniques are used. The former scheme increases cost of the system while the latter introduces redundancy or distortion. A novel PAPR reduction scheme is presented. It is a combination of the ideas of Tone Reservation and Selected Mapping. The advantage of this scheme is that it has a lower complexity. It is simulated for a WiMAX system.
Starting Page	1
Ending Page	8
File Size	295772
Page Count	8
File Format	PDF
ISBN	9781457710773
e-ISBN	9781905824267
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-05-11
Publisher Place	Botswana
Access Restriction	Subscribed
Rights Holder	IIMC LTD
Subject Keyword	Additives OFDM SLM PAPR Peak to average power ratio WiMAX Time domain analysis Distortion Equations Selected TR Crest Factor TR
Content Type	Text
Resource Type	Article

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