International Journal of Information Technology and Computer Science(IJITCS)

ISSN: 2074-9007 (Print), ISSN: 2074-9015 (Online)

Published By: MECS Press

IJITCS Vol.4, No.9, Aug. 2012

Study the Performance of SLM for Different Number of Subcarriers

Full Text (PDF, 262KB), PP.59-64

Views:79   Downloads:1


Mohammad Alamgir Hossain,Md. Ibrahim Abdullah,Md. Shamim Hossain,Md. Salim Raza

Index Terms

OFDM;PAPR;Power Amplifiers;Selected Mapping;Complimentary Cumulative Distribution Function


Orthogonal Frequency Division Multiplexing (OFDM) is an attractive modulation technique for transmitting large amounts of digital data over radio waves. One major disadvantage of OFDM is that the time domain OFDM signal which is a sum of several sinusoids leads to high peak to average power ratio (PAPR) which leads to power inefficiency in RF section of the transmitter and increased complexity in the analog to digital and digital to analog Converter. Selected mapping (SLM) is a well-known method for reducing the PAPR in OFDM. In this paper, we have studied the performance of SLM for Different Number of Subcarriers. Simulation result shows that the PAPR is reduced significantly when the number of phase sequences is increased and PAPR is increased when the number of subcarriers is increased. It also shows that data speed increases when subcarriers increase where N-point IFFT/FFT circuit depends on N-subcarriers.

Cite This Paper

Mohammad Alamgir Hossain, Md. Ibrahim Abdullah, Md. Shamim Hossain, Md. Salim Raza, "Study the Performance of SLM for Different Number of Subcarriers", International Journal of Information Technology and Computer Science(IJITCS), vol.4, no.9, pp.59-64, 2012. DOI: 10.5815/ijitcs.2012.09.08


[1]V.Vijayarangan, DR.(MRS) R.Sukanesh, “An overview of techniques for reducing peak to average power ratio and its selection criteria for orthogonal frequency division multiplexing radio systems”, Journal of Theoretical and Applied Information Technology, pp 25-36, 2009. 

[2]Wang Yi. Gu linfeng “An Investigation of Peak-to-Average Power Reduction in MIMO-OFDM Systems”, MSc Thesis, Blekinge Institute of Technology, Sweden, October 2009.

[3]R. W. Bauml, R. F. H. Fisher, and J. B. Huber, “Reducing the peak-toaverage power ratio of multicarrier modulation by selected mapping,” Electron. Lett., vol. 32, no. 22, pp. 2056–2057, Oct. 1996.

[4]Ramjee Prasad, “OFDM for Wireless Communications Systems”, Artech House universal personal communications series, pp 149-179, 2004. 

[5]J. Tellado, “Peak to average power reduction for multicarrier modulation,” Ph.D. dissertation, Dept. Elect. Eng., Stanford Univ., Stanford, CA, Sep. 1999.

[6]Hiroshi Harada, Ramjee Prasad, "Simulation and software radio for mobile ommunications" , universal personal communications, 31 Mar 2002.

[7]S. H. Han, J. H. Lee, “An overview of Peak-to-Average-Power Ratio reduction techniques for multi carrier transmission”, IEEE Wireless Communication, pp.53-65, April 2005.

[8]X. Wang, T.T. Tjhung, and C.S. Ng, “Reduction of peak-toaverage power ratio of OFDM system using a companding technique,” IEEE Trans .on Broadcastaing, Vol. 45, No. 3, pp. 303-307, Sep. 1999.


[10]Y. Wu, and W.Y. Zou, “Orthogonal frequency division multiplexing: a multi-carrier modulation scheme,” IEEE Trans. on Consumer Electronics, vol. 41, no. 3, pp. 392-399, Aug. 1995.