Chaotic sequences for reduction of PAPR in OFDMA system

Author

Susan, R.J. ; Pillai, Sakuntala S.

Author_Institution

Dept. of Electron. & Commun., Coll. of Eng., Thiruvananthapuram, India

fYear

2011

fDate

16-18 Dec. 2011

Firstpage

1

Lastpage

4

Abstract

In wireless communication, the physical layer should facilitate multiuser, multirate transmission to support large number of users and applications with diverse needs. In this work chaotic sequences generated using logistic map were used to achieve multiple data rate in Orthogonal Frequency Division Multiple Access (OFDMA) system. Performance was compared with that of Orthogonal Variable Spreading Factor (OVSF) code. Increase in Peak to average power ratio (PAPR) due to variable spreading could be reduced by spreading using chaotic sequences. The spreading sequences could be chosen irrespective of the data rates used. It was also observed that chaotic sequences gave constant PAPR values for different combinations of data rates. Bit error rate was found to be comparable with that for OVSF codes.

Keywords

OFDM modulation; chaotic communication; error statistics; frequency division multiple access; OFDMA system; OVSF code; PAPR reduction; bit error rate; chaotic sequences; constant PAPR values; logistic map; multiuser multirate transmission; orthogonal frequency division multiple access; orthogonal variable spreading factor code; peak-to-average power ratio; spreading sequences; wireless communication; Bit error rate; Chaotic communication; Correlation; Peak to average power ratio; Wireless communication; Multiple data rate; OFDMA; PAPR; chaotic sequences;

fLanguage

English

Publisher

ieee

Conference_Titel

India Conference (INDICON), 2011 Annual IEEE

Conference_Location

Hyderabad

Print_ISBN

978-1-4577-1110-7

Type

conf

DOI

10.1109/INDCON.2011.6139433

Filename

6139433