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An Improvement Of Scrambling Technique By Using Modified Selected Mapping In Ofdm System

Orthogonal Frequency Division Multiplexing (OFDM) is a form of digital signal modulation format that is being used in many digital communication system, such as digital television, internet access, wireless network and 4G mobile communication. It is a method of encoding digital data on multiple carr...

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Main Author: Khor, Eng Wong
Format: Monograph
Language:English
Published: Universiti Sains Malaysia 2017
Subjects:
T Technology
TK1-9971 Electrical engineering. Electronics. Nuclear engineering
Online Access:http://eprints.usm.my/52873/1/An%20Improvement%20Of%20Scrambling%20Technique%20By%20Using%20Modified%20Selected%20Mapping%20In%20Ofdm%20System_Khor%20Eng%20Wong_E3_2017.pdf
http://eprints.usm.my/52873/
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spelling my.usm.eprints.52873 http://eprints.usm.my/52873/ An Improvement Of Scrambling Technique By Using Modified Selected Mapping In Ofdm System Khor, Eng Wong T Technology TK1-9971 Electrical engineering. Electronics. Nuclear engineering Orthogonal Frequency Division Multiplexing (OFDM) is a form of digital signal modulation format that is being used in many digital communication system, such as digital television, internet access, wireless network and 4G mobile communication. It is a method of encoding digital data on multiple carrier frequencies. Due to the high transmission speed and efficiency, OFDM is often been chosen to implement in many applications for communication purpose. However, the major drawback of OFDM system is the high Peak-to-Average Power Ratio (PAPR) which also resulting in the increase of Bit Error Rate (BER) and power consumption. Hence, PAPR become the most important issue to tackle. There are various techniques can be used to reduce PAPR. They generally can be classified into two groups, signal scrambling technique and signal distortion technique. This project proposed a method called Modified Selected Mapping (MSLM) scheme to reduce the PAPR. Basically, this technique is the combination of selected mapping (SLM) and linear block coding method which both of them are considered as signal scrambling technique. The project’s objectives are to develop a system to reduce the PAPR in OFDM system by using MSLM scheme and to determine how the number of subcarriers affect the PAPR performance of OFDM system. In conclusion, MSLM scheme was able to reduce the amount of PAPR 8.27% more than the conventional SLM in average. This research also found out that the PAPR of the system increases with the number of subcarriers used. Universiti Sains Malaysia 2017-06-01 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/52873/1/An%20Improvement%20Of%20Scrambling%20Technique%20By%20Using%20Modified%20Selected%20Mapping%20In%20Ofdm%20System_Khor%20Eng%20Wong_E3_2017.pdf Khor, Eng Wong (2017) An Improvement Of Scrambling Technique By Using Modified Selected Mapping In Ofdm System. Project Report. Universiti Sains Malaysia, Pusat Pengajian Kejuruteraan Elektrik & Elektronik. (Submitted)
institution Universiti Sains Malaysia
building Hamzah Sendut Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Sains Malaysia
content_source USM Institutional Repository
url_provider http://eprints.usm.my/
language English
topic T Technology
TK1-9971 Electrical engineering. Electronics. Nuclear engineering
spellingShingle T Technology
TK1-9971 Electrical engineering. Electronics. Nuclear engineering
Khor, Eng Wong
An Improvement Of Scrambling Technique By Using Modified Selected Mapping In Ofdm System
description Orthogonal Frequency Division Multiplexing (OFDM) is a form of digital signal modulation format that is being used in many digital communication system, such as digital television, internet access, wireless network and 4G mobile communication. It is a method of encoding digital data on multiple carrier frequencies. Due to the high transmission speed and efficiency, OFDM is often been chosen to implement in many applications for communication purpose. However, the major drawback of OFDM system is the high Peak-to-Average Power Ratio (PAPR) which also resulting in the increase of Bit Error Rate (BER) and power consumption. Hence, PAPR become the most important issue to tackle. There are various techniques can be used to reduce PAPR. They generally can be classified into two groups, signal scrambling technique and signal distortion technique. This project proposed a method called Modified Selected Mapping (MSLM) scheme to reduce the PAPR. Basically, this technique is the combination of selected mapping (SLM) and linear block coding method which both of them are considered as signal scrambling technique. The project’s objectives are to develop a system to reduce the PAPR in OFDM system by using MSLM scheme and to determine how the number of subcarriers affect the PAPR performance of OFDM system. In conclusion, MSLM scheme was able to reduce the amount of PAPR 8.27% more than the conventional SLM in average. This research also found out that the PAPR of the system increases with the number of subcarriers used.
format Monograph
author Khor, Eng Wong
author_facet Khor, Eng Wong
author_sort Khor, Eng Wong
title An Improvement Of Scrambling Technique By Using Modified Selected Mapping In Ofdm System
title_short An Improvement Of Scrambling Technique By Using Modified Selected Mapping In Ofdm System
title_full An Improvement Of Scrambling Technique By Using Modified Selected Mapping In Ofdm System
title_fullStr An Improvement Of Scrambling Technique By Using Modified Selected Mapping In Ofdm System
title_full_unstemmed An Improvement Of Scrambling Technique By Using Modified Selected Mapping In Ofdm System
title_sort improvement of scrambling technique by using modified selected mapping in ofdm system
publisher Universiti Sains Malaysia
publishDate 2017
url http://eprints.usm.my/52873/1/An%20Improvement%20Of%20Scrambling%20Technique%20By%20Using%20Modified%20Selected%20Mapping%20In%20Ofdm%20System_Khor%20Eng%20Wong_E3_2017.pdf
http://eprints.usm.my/52873/
_version_ 1736834770248138752
score 13.211869

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