A novel approach based on PN sequence coding for reduction of PAPR in OFDM-MIMO with equalization and constellation

摘要

In this paper we consider a combination of OFDM and MIMO system. We took the OFDM transmission to know the delay and also the distortion. We could use this signal in baseband discrete-time domain simulations, but we must recall that the main OFDM drawbacks occur in the continuous time domain; therefore, we must provide a simulation for the betterment. We can transmit the values for taking the fading input and output in the corresponding MIMO channels. This means that the signal does not have a constant envelope and that the power each antenna must transmit has to vary, both of which are undesirable. We now obtain a lower bound for using the following lower bound for the SNR. We need less noise and less distortion on the meaningful bit. It is therefore a dimensionless quantity. Then consider PAPR. The high peak-to-average-power ratio (PAR) of Orthogonal Frequency Division Multiplexing (OFDM) transmission systems significantly reduces the power efficiency or performance of such systems, and many techniques have been proposed to deal with this problem. The PAR can be globally minimized by distorting the OFDM constellation subject to a constraint on the error vector magnitude (EVM). We work for minimizing the transmitter power consumption while maintaining a constant bit error rate (BER) at the receiver. We are applying the output after SVD so it reduces the fading and noise.