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Effect of Peak-to-Average Power Ratio Reduction on the Multicarrier Communication System Performance Parameters

Singh, Sanjay and Kumar, Sathish M and Mruthyunjaya, H.S (2009) Effect of Peak-to-Average Power Ratio Reduction on the Multicarrier Communication System Performance Parameters. International Journal of Electrical and Computer Engineering, 4 (12). pp. 779-786.

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Multicarrier transmission system such as Orthogonal Frequency Division Multiplexing (OFDM) is a promising technique for high bit rate transmission in wireless communication system. OFDM is a spectrally efficient modulation technique that can achieve high speed data transmission over multipath fading channels without the need for powerful equalization techniques. However the price paid for this high spectral efficiency and less intensive equalization is low power efficiency. OFDM signals are very sensitive to nonlinear effects due to the high Peak-to-Average Power Ratio (PAPR), which leads to the power inefficiency in the RF section of the transmitter. This paper investigates the effect of PAPR reduction on the performance parameter of multicarrier communication system. Performance parameters considered are power consumption of Power Amplifier (PA) and Digital-to-Analog Converter (DAC), power amplifier efficiency, SNR of DAC and BER performance of the system. From our analysis it is found that irrespective of PAPR reduction technique being employed, the power consumption of PA and DAC reduces and power amplifier efficiency increases due to reduction in PAPR. Moreover, it has been shown that for a given BER performance the requirement of Input-Backoff (IBO) reduces with reduction in PAPR

Item Type: Article
Uncontrolled Keywords: BER, Crest Factor (CF), Digital-to-Analog Converter (DAC), Input-Backoff (IBO), Orthogonal Frequency Division Multiplexing (OFDM), Peak-to-Average Power Ratio (PAPR), Power Amplifier efficiency, SNR
Subjects: Engineering > MIT Manipal > Information and Communication Technology
Depositing User: MIT Library
Date Deposited: 27 Apr 2013 05:33
Last Modified: 27 Apr 2013 05:33

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