Boosting Efficiency using PAPR Using the Selective Mapping (SLM) Technique to Reduce in MIMO-OFDM Systems

Abstract

5G requires very advanced communication methods to increase spectrum efficiency. Both Orthogonal Frequency Division Multiplexing (OFDM) and Multiple Input Multiple Output (MIMO) have found application due to their superior performance. This system makes use of MIMO-OFDM methods to boost its performance. Extremely high signal amplitudes are possible with OFDM due to the huge number of separate subcarriers. Spectral efficiency is maximised using this kind of multicarrier modulation. Nevertheless, a high PAPR is an outcome of the OFDM signal's robust power peaks. A higher BER and worse system performance are the results of such a high PAPR. As the number of routes changes, this work focusses on the Selective Mapping Technique (SLM) that uses the Complementary Cumulative Distribution Function (CCDF). Using SLM becomes effective when there are a lot of subcarriers. The SLM approach is able to reduce the peak-to-average power ratio in MIMO-OFDM. The main problem with SLM is that it relies on auxiliary data bits to find the receiver's real data bits. Because signal detection is possible with SLM that does not include any auxiliary data. Clearly, PAPR is inversely proportional to route numbers, according to the simulation findings.