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Efficient BER Reduction Technique for Nonlinear OFDM Transmission Using Distortion Prediction

Lookup NU author(s): Emad Al-Dalakta, Dr Arafat Al-Dweik, Dr Charalampos Tsimenidis, Professor Bayan Sharif

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Abstract

This work presents an efficient technique to reduce thebit error rate (BER) of orthogonal frequency division multiplexing(OFDM) signals transmitted over nonlinear solid state power amplifiers(SSPA). The proposed technique is based on predicting thedistortion power that a SSPA would generate due to the nonlinearcharacteristics of such devices. In a fashion similar to the selectivemapping (SLM) or partial transmit sequence (PTS) schemes, thepredicted distortion is used to select a set of phases that minimizethe actual SSPA distortion. Simulation results have confirmed thatthe signal-to-noise ratio (SNR) required to obtain BER ∼10−4 usingthe proposed technique is less by about 8 dB when it is comparedto the standard PTS utilizing 16 partitions. Moreover, complexityanalysis demonstrated that the proposed system offers a significantcomplexity reduction of about 60% when compared to state-of-theartmethods.


Publication metadata

Author(s): Al-Dalakta E, Al-Dweik A, Hazmi A, Tsimenidis C, Sharif B

Publication type: Article

Journal: IEEE Transactions on Vehicular Technology

Year: 2012

Volume: 61

Issue: 5

Pages: 2330-2336

Print publication date: 14/03/2012

ISSN (print): 0018-9545

ISSN (electronic): 1939-9359

Publisher: IEEE

URL: http://dx.doi.org/10.1109/TVT.2012.2190950

DOI: 10.1109/TVT.2012.2190950


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