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Reseach Article

DCT SLM Scheme for Peak-to-Average Power Ratio Reduction in OFCDM System

Published on October 2015 by C.s. Aher, M.n. Thakare, P.r.lakhe
International Conference on Advancements in Engineering and Technology (ICAET 2015)
Foundation of Computer Science USA
ICQUEST2015 - Number 2
October 2015
Authors: C.s. Aher, M.n. Thakare, P.r.lakhe
4c9bd163-b3c3-4547-9fcc-48db34e8b5ec

C.s. Aher, M.n. Thakare, P.r.lakhe . DCT SLM Scheme for Peak-to-Average Power Ratio Reduction in OFCDM System. International Conference on Advancements in Engineering and Technology (ICAET 2015). ICQUEST2015, 2 (October 2015), 1-4.

@article{
author = { C.s. Aher, M.n. Thakare, P.r.lakhe },
title = { DCT SLM Scheme for Peak-to-Average Power Ratio Reduction in OFCDM System },
journal = { International Conference on Advancements in Engineering and Technology (ICAET 2015) },
issue_date = { October 2015 },
volume = { ICQUEST2015 },
number = { 2 },
month = { October },
year = { 2015 },
issn = 0975-8887,
pages = { 1-4 },
numpages = 4,
url = { /proceedings/icquest2015/number2/22983-2741/ },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Proceeding Article
%1 International Conference on Advancements in Engineering and Technology (ICAET 2015)
%A C.s. Aher
%A M.n. Thakare
%A P.r.lakhe
%T DCT SLM Scheme for Peak-to-Average Power Ratio Reduction in OFCDM System
%J International Conference on Advancements in Engineering and Technology (ICAET 2015)
%@ 0975-8887
%V ICQUEST2015
%N 2
%P 1-4
%D 2015
%I International Journal of Computer Applications
Abstract

We introduce DCT SLM orthogonal frequency coded division multiplexing (OFCDM) scheme for reduction of peak to average power ratio. There is a time for high-speed data transmission in mobile communications. OFCDM is very promising technique for 4G standard like LTE (Long Term Evolution) and WIMAX (Worldwide Inter-operability for Microwave Access) but also has some issues like frequency-offset and PAPR (peak-to-average power ratio). High peak-to-average power ratio (PAPR) of the transmitted signal originates from the superposition of many independent subcarriers. In this paper, a Discrete Cosine Transform based modified selective mapping technique is proposed to reduce the PAPR of the transmitted signal. This method combines Discrete Cosine Transform (DCT) with modified Selective Level Mapping (SLM), the variant of SLM make use of the standard array of linear block codes. The proposed method can be realized in two ways- scheme 1 and 2. In scheme1 DCT is used before the IFFT block in Modified SLM and in scheme 2 DCT is used after the Modified SLM block. Simulation results shows that Scheme 1 is having better reduction performance than the scheme 2. Due to PAPR reduction ICI and ISI both reduces drastically.

References
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Index Terms

Computer Science
Information Sciences

Keywords

Dct Dct Slm Modified Slm Papr Slm