Thursday 28th of March 2024
 

Combined coding and companding to reduce both PAPR and BER in OFDM systems


Hervé Koudougnon, Idriss Chana and Mostafa Belkasmi

A major problem in telecommunications is to adapt the information to transmit to the propagation channel. For frequency selective channels, a technique is to use multi-carrier modulation such as OFDM (Orthogonal Frequency Division Multiplexing) in which an information block is modulated by a Fourier transform. But one of the main disadvantages of OFDM is its high PAPR (Peak to Average Power Ratio). In this paper we propose a method for reducing PAPR using encoding and companding techniques. Companding is used to reduce PAPR while coding is used to reduce the Bit Error Rate (BER). BCH codes and #956;-law compander have been used for this purpose. The effects of modulation have been studied too.

Keywords: block coding, BCH, OFDM, PAPR, Companding

Download Full-Text


ABOUT THE AUTHORS

Hervé Koudougnon
H. Koudougnon received his license in Computer Science and Engineering in Jun 2001 and Master in Computer Science and telecommunication from University of Mohammed V - Agdal, Rabat, Morocco in 2006. Currently he is doing his PhD in Computer Science and Engineering at ENSIAS (Ecole National d’Informatique et Anlyse des Systmes), Rabat, Morocco. Herareas of interest are Signal Processing and Information Theory

Idriss Chana
I. Chana received his license in Computer Science and Engineering in Jun 2001 and Master in Computer Science and telecommunication from University of Mohammed V - Agdal, Rabat, Morocco in 2006. Currently he is doing his PhD in Computer Science and Engineering at ENSIAS (Ecole National d’Informatique et Anlyse des Systmes), Rabat, Morocco. Herareas of interest are Information and Coding Theory.

Mostafa Belkasmi
M. Belkasmi is recently a professor at ENSIAS (Ecole National d’Informatique et Anlyse des Systme), head of Telecom and Embedded Systems Team at SIME Lab .He had PhD at Toulouz University in 1991. His current research interests include mobile and wireless communications, 3G and 4G networks, and Information and Coding Theory.


IJCSI Published Papers Indexed By:

 

 

 

 
+++
About IJCSI

IJCSI is a refereed open access international journal for scientific papers dealing in all areas of computer science research...

Learn more »
Join Us
FAQs

Read the most frequently asked questions about IJCSI.

Frequently Asked Questions (FAQs) »
Get in touch

Phone: +230 911 5482
Email: info@ijcsi.org

More contact details »