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Please use this identifier to cite or link to this item: http://dspace.unimap.edu.my:80/xmlui/handle/123456789/7042

Title: On reducing the effects of clipping in an enhanced Orthogonal Frequency Division Multiplexing system
Authors: Wan Hafiza, Wan Hassan
Sabira Khatun
Keywords: Orthogonalization methods;Wavelength division multiplexing;Orthogonal frequency division multiplexing;Wireless communication systems;Communication technique
Issue Date: 18-May-2005
Publisher: Kolej Universiti Kejuruteraan Utara Malaysia
Citation: p.47-51
Series/Report no.: Proceedings of the 1st National Conference on Electronic Design
Abstract: Orthogonal frequency division multiplexing (OFDM) is a communication technique that divides a communication channel into a number of equally spaced frequency bands. One major problem, which degrades the OFDM performance, is its high peak average power ratio (PAPR). Nowadays,clipping has become a well known technique in reducing PAPR due to its simplicity. However, this technique has some effects which will degrade the performance of an OFDM system.In this paper, a new OFDM system with an enhanced clipping technique has been proposed, the effects of clipping have been analyzed and the system is evaluated by integrating most of its significant features including convolutional forward error control coding and oversampled inverse fast fourier transform (IFFT), in order to minimize the effects of clipping. It is shown that the bit error rate (BER) of clipped OFDM signal is improved by using this proposed system as well as the PAPR is further reduced as compared to the conventional technique.
Description: Organized by Kolej Universiti Kejuruteraan Utara Malaysia (KUKUM), 18th - 19th May 2005 at Putra Palace Hotel, Kangar.
URI: http://hdl.handle.net/123456789/7042
Appears in Collections:Conference Papers

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