Publication date: Available online 27 September 2017
Source:Physical Communication
Author(s): A.S. Namitha, S.M. Sameer
An inherent issue of multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) technique is its high peak-to-average power ratio (PAPR) over distinct antennas. Selective mapping (SLM) is one of the most prevalent methods to reduce the PAPR without inducing any signal deformation in OFDM or MIMO-OFDM. The main drawback of the SLM technique is the need for sending side information (SI) with each OFDM data symbol for retrieving the transmitted data. In this paper, we present a low complexity SLM technique using Hadamard sequence to substantially reduce the PAPR in MIMO-OFDM systems without the need for transmitting SI thus resulting in improved data rate/ bandwidth efficiency and BER performance. Simulation studies show that the proposed method achieves a significant reduction in PAPR and improves the BER performance as compared to some prevailing methods.
Source:Physical Communication
Author(s): A.S. Namitha, S.M. Sameer