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Peak to Average Power Ratio (PAPR) reduction in OFDM system

Nik Abd Malik, Nik Noordini and Ngajikin, Nor Hafizah and Idrus Sutan Nameh, Sevia Mahdaliza and Abdul Latif, N.D. (2006) Peak to Average Power Ratio (PAPR) reduction in OFDM system. In: RF and Microwave Conference, 2006. RFM 2006. International, 12-14 Sept 2006, Putrajaya, Malaysia.

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Official URL: http://dx.doi.org/10.1109/RFM.2006.331041

Abstract

Orthogonal frequency division multiplexing (OFDM) is a special form of multi-carrier modulation which is robust against the multipath effect, intersymbol interference (ISI) and high spectral efficiency. However, peak to average power ratio (PAPR) is a major drawback in the system since this leads to the distortion problem in the linear devices such as the power amplifier (PA). Thus, the PAs require a backoff which is approximately equal to the PAPR for distortionless transmission. This decreases the efficiency for amplifiers. Hence, reducing the PAPR is the main focus of this paper. One of the available PAPR solutions is clipping. In the technique, the efficiency does not depend on the number of carriers. This paper investigates the effectiveness of the clipping technique by focusing on the performance of PAPR value with different values of clipping ratios (CRs) and the relationship between PAPR value and bit error rate (BER).

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:BER, OFDM system, bit error rate, clipping ratio, intersymbol interference, multicarrier modulation, orthogonal frequency division multiplexing, peak to average power ratio reduction, power amplifier
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:7580
Deposited By: Norhafizah Hussin
Deposited On:09 Jan 2009 06:55
Last Modified:01 Jun 2010 15:53

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