• B Emmanuel Lawrence

Orthogonal Frequency Division Multiplexing (OFDM) is considered to be a promising technique robust to multi-path fading and time varying channel behaviors of the wireless channels. However, the Peak-to-Average Power Ratio (PAPR) problem is a major drawback of this OFDM multicarrier transmission system which leads to power inefficiency in RF section of the transmitter. This paper present different PAPR reduction techniques developed based on selective mapping SLM) algorithm without the side information (SI) being transmitted and conclude an overall comparison of these techniques. The SLM methods considered are Blind-SLM (b-SLM), Phase offset SLM (pSLM), extended SLM (eSLM), and low complexity eSLM (LC-eSLM). We assumed 2 transmitting antennas and corresponding SFBC coding. The CCDF performance of PAPR for different schemes with N=512 subcarriers per OFDM symbol is plotted and a comparison of the number of complex multiplications and complex additions involved in these SLM methods is done.

PAPR,OFDM, SLM, SFBC.

"Comparison of SLM based PAPR reduction methods without need of SI", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.250-257, April-2019, Available :http://www.jetir.org/papers/JETIR1904N40.pdf

"Comparison of SLM based PAPR reduction methods without need of SI", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp250-257, April-2019, Available at : http://www.jetir.org/papers/JETIR1904N40.pdf