A New Method for PAPR Reduction in MIMOOFDM using Combination of OSTBC Encoder and DCT Matrix
Mehboob Ul Amin1, Randhir Singh2, Javaid A. Skeikh3
1Mehboob ul Amin, Sri Sai College of Engineering, Pathankot (Punjab) India.
2Randhir Singh, Sri Sai College of Engineering, Pathankot (Punjab), India
3Javaid A. Skeikh, Post Graduate, Department of Electronics and Instrumentation Technology, University of Kashmir, Srinagar (J&K), India
Manuscript received on 21 May 2013 | Revised Manuscript received on 28 May 2013 | Manuscript published on 30 May 2013 | PP: 62-66 | Volume-2 Issue-2, May 2013 | Retrieval Number: B0597052213/2013©BEIESP
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Abstract: Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) is an attractive air-interface solution for next generation wireless local area networks (WLANs), wireless metropolitan area networks (WMANs), and fourth generation mobile cellular wireless systems. However one of the main disadvantage associated with MIMO-OFDM systems is the high peak-to-average power ratio (PAPR) of the transmitter’s output signal on different antennas. High Peak to Average Power Ratio (PAPR) for MIMO-OFDM system is still a demanding area and difficult issue. So far numerous techniques based on PAPR reduction have been proposed. In this paper a new technique based on the combination of Orthogonal Space Time Block Code (OSTBC) Encoder and Discrete Cosine Transform based Selective Level Mapping as method of PAPR reduction technique has been proposed and simulated. The results have been verified in terms of various graphs and plots and are compared with earlier results of embedded transform techniques. Simulations show that better results are obtained in the proposed technique
Keywords: Multiple Input Multiple Out (MIMO), Peak to Average Power Ratio (PAPR) ,Orthogonal Space Time Block (OSTBC) Encoder, Discreet Cosine Transform (DCT), Complementary Cumulative Distribution Function (CCDF).
Scope of the Article: Probabilistic Models and Methods