Performance Analysis of PAPR Reduction in 4ÃÂ4 Spatially Multiplexed MIMO-OFDM System using SLM and Optimum-PTS Techniques
Poudel B* and Mishra B
Department of Electrical and Electronics Engineering, Kathmandu University, Dhulikhel, Nepal
- *Corresponding Author:
- Poudel B
Department of Electrical and Electronics Engineering
Kathmandu University, Dhulikhel, Nepal
E-mail: [email protected]
Received date: September 06, 2015; Accepted date: January 20, 2016; Published date: January 23, 2016
Citation: Poudel B, Mishra B (2016) Performance Analysis of PAPR Reduction in 4×4 Spatially Multiplexed MIMO-OFDM System using SLM and Optimum-PTS Techniques. J Telecommun Syst Manage 5:123. doi:10.4172/2167-0919.1000123
Copyright: © 2016 Poudel B, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Multiple-input Multiple-output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) is a promising candidate for 4G high-data-rate broadband wireless communications. However, MIMO-OFDM inherited the problem of high Peak-to-Average Power Ratio (PAPR) from OFDM which leads to in-band distortion, undesired spectral spreading, low power efficiency and increases the cost of the RF power amplifier. Many PAPR reduction techniques were developed in last two decades to reduce the PAPR of OFDM, among them Partial Transmit Sequence (PTS) and Selected Mapping (SLM) are the important ones. This paper proposes two PAPR reduction technique; SLM and Optimum -PTS for reducing the PAPR and does performance comparison of these two techniques on the basis of reduction in PAPR level, BER and the number of redundant bits required. It shows that the use of Optimum-PTS technique with QPSK modulation comprising of 128 subcarriers provides better PAPR reduction and good BER as compared to SLM.