Performance Investigations and PAPR Reduction Analysis Using Very Efficient and Optimized Amended SLM Algorithm for Wire
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Performance Investigations and PAPR Reduction Analysis Using Very Efficient and Optimized Amended SLM Algorithm for Wireless Communication OFDM System Prabal Gupta1 · H. Pal Thethi2
© Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract The orthogonal frequency division multiplexing (OFDM) is the most encouraging multicarrier modulation system chosen for the high data rates but the objective is to resolve intrinsic common issue of peak to average power ratio (PAPR). The projected algorithm is illustrated in this research study which is established upon selected mapping (SLM) with pseudo-random sequence under time domain μ law companding of signal. Besides the significant competitive characteristics of conventional SLM algorithm (ConvenSLMAlgo) (Mestdagh et al. in Electron Lett 32(22):2056–2057, 1996. https://doi.org/10.1049/ el:19961384), it undergoes the tedious complexity in generation of phase sequence and for the recovery of sequence, side information is mandatory. The key concern, thus, to eliminate the tedious problem of designing of phase sequence along with the aim of reducing the fluctuation of signal with high PAPR. Henceforth, in the projected algorithm (Projected-Algo) a noteworthy strategy has been investigated and followed for the designing of phase sequence which is very easy and for the recovery of information at receiver, side information of index of column of phase sequences can be used because of straightforwardness in its establishment. Hence, we demonstrate the effective overall excellent performance of Projected-Algo along with analysis and also comparative study of ProjectedAlgo outperforms the conventional OFDM system (unchanged), ConvenSLM-Algo [16], SLM with new pseudo random phase sequences (ModSLM-Algo) given in literature (Ali et al. in Canadian conference on electrical and computer engineering, 2018. https://doi. org/10.1109/CCECE.2018.8447835). Keywords IFFT · OFDM · PAPR · SLM · CCDF
* Prabal Gupta [email protected] H. Pal Thethi [email protected] 1
Department of ECE, SCSE, Lovely Professional University, Punjab, India
2
Department of ECE, SEEE, Lovely Professional University, Punjab, India
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P. Gupta, H. P. Thethi
1 Introduction Orthogonal frequency division multiplexing (OFDM) [1] which is excellent and desired as multicarrier modulation (MCM) has been extensively acknowledged and adopted in several areas like American Digital video broadcasting (ATSC 3.0), long term evolution (LTE), digital video broadcasting (DVB), asymmetric digital subscriber line (ADSL), multimedia over coax alliance (MOCA), IEEE 802.20, IEEE 802.11 a/g/n, IEEE 802.16 d, IEEE 802.15.3a, digital audio broadcast (DAB) system, HIPERLAN/2 [10]. In the time domain when numerous components are added after passing through IFFT then high peak values are generated by signal because of this result, OFDM system suffers and characterized very high PAPR, this is the key disadvantage of OFDM system and which is like any modulation of multicarrier. T
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