LowPhy module improvization using novel methodology for 5G Technology

Abstract

In a communication system, OFDM is the best technique for high speed transfer amplification in a communication network. The principal downside in the OFDM system was PAPR (Peak Average Power Reduction Ratio). Since of this large PAPR the device output reduces as the OFDM signal moves through the amplifier. The large PAPR multiplexing device in the Orthogonal Frequency division increases the power output of the RF amplifier and decreases the Non linearity of the HPA characteristics. Block labeling, clipping and filtering, selective mapping (SLM), partial transmitting scheme (PTS), tone reservation, tone injection are built to minimize PAPR. But because of the disadvantages of those techniques we look forward to another technique as companding. By combining the exponential companding and -law companding we can reduce the Peak to average power ratio in orthogonal frequency division multiplexing signals. We may decrease PAPR posed in orthogonal frequency division multiplexing, systems by implementing CCDF function on the companding technique.