DCT- SLM Technique for Peak-To-Average Power Ratio Reduction in OFCDM System |
Author(s): |
| Chaitali Aher , S. D. College of Engineering; Prof. P.R.Lakhe, S. D. College of Engineering; Mr. S .S. Kemekar, Inox Air Product Ltd |
Keywords: |
| DCT, DCT- SLM, PAPR, SLM |
Abstract |
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DCT-SLM technique has been introduced with orthogonal frequency coded division multiplexing (OFCDM) for reduction of peak to average power ratio. OFCDM is a promising multicarrier technique used in wireless transmission with high data rate and high bandwidth efficiency but it 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 DCT based selective mapping technique is proposed to reduce the PAPR of the transmitted signal. This method combines Discrete Cosine Transform (DCT) with Selective Level Mapping (SLM). Simulation result shows that System using DCT SLM technique is having better reduction performance than the original OFCDM system. PAPR reduction results in reduction of ICI and ISI drastically. |
Other Details |
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Paper ID: IJSRDV4I31656 Published in: Volume : 4, Issue : 3 Publication Date: 01/06/2016 Page(s): 1935-1939 |
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