Peak to average power ratio reduction of OFDM system

Author

Gayathri, T. ; Bavithra, K.

Author_Institution

Commun. Syst., S.A Eng. Coll., Chennai, India

fYear

2014

fDate

27-28 Feb. 2014

Firstpage

1

Lastpage

5

Abstract

Orthogonal frequency division multiplexing (OFDM) is a modulation technique that is suitable for high data rate communication. But the main drawback of OFDM is its high peak to average power ratio (PAPR), which can lead to nonlinear distortions in the power amplifiers at the transmitter side. Selected mapping (SLM) based schemes effectively reduce the PAPR of OFDM system. However they require side information (SI) transmission, which suffers a loss in the data throughput in addition to the increased system complexity. A novel SI detection method enabling low complexity data decoding is proposed. Simulation results of this proposed SI detection method shows the bit error rate performance comparable to that of the simplified maximum likelihood data decoding scheme while the computational complexity is close to that of the embedded SI based data decoding scheme.

Keywords

OFDM modulation; computational complexity; decoding; error statistics; maximum likelihood decoding; nonlinear distortion; power amplifiers; radio networks; radio transmitters; OFDM system; PAPR; SI detection method; SI transmission; SLM; bit error rate performance; computational complexity; data decoding scheme; data throughput; high data rate communication; high speed wireless communication system; modulation technique; nonlinear distortion; orthogonal frequency division multiplexing; peak to average power ratio reduction; power amplifier; selected mapping based scheme; side information transmission; simplified maximum likelihood data decoding scheme; transmitter side; Bit error rate; Maximum likelihood decoding; Peak to average power ratio; Receivers; Silicon; Transmitters; Peak to Average Power Ratio; Selected mapping; Side Information; orthogonal frequency division Multiplexing;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Communication and Embedded Systems (ICICES), 2014 International Conference on

Conference_Location

Chennai

Print_ISBN

978-1-4799-3835-3

Type

conf

DOI

10.1109/ICICES.2014.7034004

Filename

7034004