Title :
Peak to average power ratio reduction of OFDM system
Author :
Gayathri, T. ; Bavithra, K.
Author_Institution :
Commun. Syst., S.A Eng. Coll., Chennai, India
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;
Conference_Titel :
Information Communication and Embedded Systems (ICICES), 2014 International Conference on
Conference_Location :
Chennai
Print_ISBN :
978-1-4799-3835-3
DOI :
10.1109/ICICES.2014.7034004
