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Papr performance analysis for combination of selective mapping (slm) and exponential companding technique

Papr performance analysis for combination of selective mapping (slm) and exponential companding technique / Oh Meng Hui
OFDM adalah skim penghantaran multicarrier yang meningkatkan kadar penghantaran data. Walau bagaimanapun, OFDM mempunyai masalah PAPR tinggi yang boleh menyebabkan herotan isyarat. Skim pengurangan PAPR dikenali sebagai SLM-Exp telah diperkenalkan dalam projek ini untuk mengatasi masalah PAPR tinggi OFDM. Untuk menilai prestasi PAPR SLM-Exp, skim SLM-Exp bersama-sama dengan SLM-Mu dan Exponential telah disimulasi dalam MATLAB untuk menilai PAPR di 1×10−3 CCDF plot. Prestasi PAPR SLM-Exp telah berbanding dengan SLM-Mu, dan skim Exponential dengan bilangan subpembawa, turutan fasa dan skim modulasi diubah. Bilangan kebimbangan subpembawa dalam projek ini adalah 64, 128, 256, dan 1512. Bilangan urutan fasa kebimbangan dalam projek ini adalah 8, 16 dan 32. Untuk skim modulasi, QPSK, 16 QAM, dan 64 QAM adalah dalam pertimbangan di projek ini. Hasil kajian menunjukkan bahawa nilai PAPR SLM-Exp di 1×10−3 CCDF plot adalah lebih baik daripada SLM-Mu dari 0.53dB ke 2.31dB dan 0.10dB ke 0.61dB untuk skim Exponential apabila bilangan subpembawa berubah. Keputusan juga menunjuk bahawa prestasi PAPR SLM-Exp adalah lebih baik daripada SLM-Mu dari 0.99dB ke 1.63dB apabila nombor jujukan fasa berubah. _______________________________________________________________________________________________________ OFDM was a multicarrier transmission scheme that increase data transmission rate. However, OFDM has high PAPR problem which can cause signal distortion. A PAPR reduction scheme known as SLM-Exp was introduce in this project to overcome high PAPR problem of OFDM. To evaluate the PAPR performance of SLM-Exp, SLM-Exp scheme along with SLM-Mu and Exponential were simulated in MATLAB for PAPR value at 1×10−3 of CCDF plot. PAPR performance of SLM-Exp was compare with SLM-Mu, and Exponential scheme as number of subcarrier, phase sequence and modulation scheme varied. The number of subcarrier concern in this project were 64, 128, 256, and 512. Number of phase sequence concern in this project were 8, 16 and 32. For modulation scheme, QPSK, 16 QAM, and 64 QAM were concern in this project. The result shows that PAPR value of SLM-Exp at 1×10−3 of CCDF plot was better than SLM-Mu by 0.53dB to 2.31dB and 0.10dB to 0.61dB for Exponential scheme as number of subcarrier varied. Result also shows that PAPR performance of SLM-Exp is better than SLM-Mu by 0.99dB to 1.63dB as number of phase sequence varied.
Contributor(s):
Oh Meng Hui - Author
Primary Item Type:
Final Year Project
Identifiers:
Barcode : 00003107035
Accession Number : 875007157
Language:
English
Subject Keywords:
OFDM; PAPR problem; cause signal distortion
First presented to the public:
5/1/2017
Original Publication Date:
4/19/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Electrical & Electronic Engineering
Citation:
Extents:
Number of Pages - 71
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-04-19 17:09:03.374
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Mohd Jasnizam Mohd Salleh

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Papr performance analysis for combination of selective mapping (slm) and exponential companding technique1 2018-04-19 17:09:03.374
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