Amelioration of F-OFDM Performance by Deterioration in BER

Mobile and data communication systems are providing various services such as voice, video, text messaging, etc. They required enhanced data rates with a high level of accuracy. The orthogonal frequency division multiplexing (OFDM) technique can achieve enhanced data rates along with low error. OFDM divides overall system bandwidth into multiple orthogonal frequency sub-bands. Each sub-band uses separate sub-carriers. This implies a reduction of inter symbol interference (ISI). Data is modulated with these subcarriers. OFDM also uses higher-order modulation/demodulation techniques and inverse fast Fourier transform/fast Fourier transform (IFFT/FFT) to deal with a large number of subcarriers. To improve the performance of OFDM, F-OFDM (filtered OFDM) was introduced. This manuscript represents the improved spectral efficiency of F-OFDM as compared to OFDM in terms of reduced bit error rate (BER), peak to average power ratio (PAPR), and power spectral density (PSD). This paper provides efforts to reduce the BER and PAPR by changing the size/value of, quadrature amplitude modulation (QAM), IFFT/FFT, resource blocks (RBs), tone offset (excess bandwidth in subcarrier), and signal to noise ratio (SNR). This effort achieves control in the BER and PAPR by varying the size/value of QAM, FFT/IFFT, RBs, tone offset, and SNR.