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

Study the Performance of SLM for Different Number of Subcarriers

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Author(s)

Mohammad Alamgir Hossain ^1,* Md. Ibrahim Abdullah ¹ Md. Shamim Hossain ¹ Md. Salim Raza ²

1. Computer Science and Engineering, Islamic University, Bangladesh

2. Applied Physics, Electronics and Communication Engineering, Islamic University, Bangladesh

* Corresponding author.

DOI: https://doi.org/10.5815/ijitcs.2012.09.08

Received: 18 Sep. 2011 / Revised: 27 Feb. 2012 / Accepted: 6 May 2012 / Published: 8 Aug. 2012

Index Terms

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

Abstract

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

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International Journal of Information Technology and Computer Science (IJITCS)