Modified SLM Combined with Interleaving and Pulse Shaping Method for PAPR Reduction using DCT and IDCT in MIMO-OFDM System
S. Sujatha1, P. Raja2, P. Dananjayan3
1S. Sujatha, Research Scholar, Department of Electrical Communication Engineering, Pondicherry Engineering College, Puducherry (Tamil Nadu). India.
2P. Raja, Associate Professor, Sri Manakula Vinayagar Engineering College, (Tamil Nadu). India.
3P. Dananjayan, Department of Electrical Communication Engineering, Pondicherry Engineering College, Puducherry (Tamil Nadu). India.
Manuscript received on December 12, 2016 . | Revised Manuscript received on December 28, 2016 . | Manuscript published on January 05, 2016 . | PP: 48-55 | Volume-5 Issue-6, January 2016 . | Retrieval Number: F2785015616/2016©BEIESP
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©The Authors. Published By: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/
Abstract: Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) is a most enthralling technology which has been recently proposed in wireless communication. It provides high data rate services and offer better system performances. It improves data throughput and delivers highest capacity as well. However, MIMO-OFDM suffers with the disadvantage of high peak-to-average power ratio (PAPR) for the large number of subcarriers which can effect the system output. Therefore, to overcome the problem of high PAPR in OFDM systems, an effective technique called Modified selective mapping (SLM) is used along with Inverse Discrete Cosine Transform (IDCT) matrix combined with interleaveing and pulse shaping to reduce the peak-to-average power ratio on both transmitter and receiver sides. By simulation results, it is seen that the proposed technique reduces PAPR.
Keywords: MIMO-OFDM,interleaving,pulseshaping, IDCT, PAPR.