BER Analysis of FBMC for 5G Communication

Abstract

AbstractThe 4G up-gradation was essential because of the exponential increment of the wireless applications. So, 5G was introduced with large capacity, small latency, improved reliability, high data rate, and better quality of services (QoS). 4G uses orthogonal frequency-division multiplexing (OFDM) which has a decent quality of long-distance communication, by eliminating intersymbol interference (ISI) and improving the signal-to-noise ratio (SNR), but it has a spectrum wastage problem. However, the improved data rate is possible by spectrum utilization. 5G adopted various techniques for the better utilization of spectrum in current scenarios. The new generation waveforms, i.e., filtered orthogonal frequency-division multiplexing (F-OFDM), generalized frequency-division multiplexing (GFDM), universal filtered multicarrier (UFMC), and filter bank multicarrier (FBMC), are one of them. This paper will discuss FBMC which is the alternative technology of OFDM with better features by building subcarrier waveform based on prototype filters. Here, FBMC is investigated in terms of BER (bit error rate) by varying several parameters such as the size of inverse fast Fourier transforms/fast Fourier transform (IFFT/FFT), length of guard band, and length of symbols. Results of simulation will show that the bit error rate (BER) of FBMC is not affected by the variation of symbol length, while advancement in the size of IFFT/FFT increases BER, on the given parameter while the BER reduces for large size of the guard band of each subcarrier.KeywordsFilter Bank MulticarrierIFFT/FFTOffset QAMOrthogonal Frequency-Division MultiplexingBit Error Rate