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Link to original content: https://doi.org/10.1007/s11277-018-5608-6
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Modified Orthogonal Frequency Division Multiplexing Technique: A Candidate for the New Generation of Wireless Systems

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Abstract

In this work, propositions to enhance the power efficiency of orthogonal frequency division multiplexing (OFDM) have been investigated, which has been considered as a benchmark for the new generation of ultra-wideband wireless systems; multiband (MBOFDM) has been taken into consideration. Three main propositions have been used to check the system’s performance and to achieve a complexity reduction by making use of the discrete wavelet transform (DWT), a transmission power probability reduction by changing the power constellation of the generated OFDM symbol, a bit error rate enhancement by optimizing the amplitude phase shift keying as a modulation technique. To investigate the propositions’ performances, both of the complementary cumulative distribution function (CCDF) and bit error rates curves have been simulated based on MATLAB. This is in addition to discuss the used power amplifier’s efficiency based on the average mutual information factors, energy efficiency and the achievable information rate (AIR). The simulation results show hybrid work (DWT combined to the power constellations reallocation) gives the best results among the examined work structures; it enhances the CCDF value by 42.4%. Furthermore, it enhances the frame error rate (AIR) to reach the value of \(8.2 \times 10^{-4}\).

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Authors and Affiliations

  1. Department of Communications and Electronics Engineering, Philadelphia University, Amman, Jordan

    Omar R. Daoud

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  1. Omar R. Daoud
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Correspondence to Omar R. Daoud.

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Daoud, O.R. Modified Orthogonal Frequency Division Multiplexing Technique: A Candidate for the New Generation of Wireless Systems. Wireless Pers Commun 100, 1047–1061 (2018). https://doi.org/10.1007/s11277-018-5608-6

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