Abstract
5G is the latest mobile communications standard that is spreading fast across the world. Recently defined requirements for 5G systems have led to higher applications’ requirements regarding data rates, lower requirements for latency, and higher efficiency regarding the spectrum usage. Universal Filtered Multi-Carrier (UFMC) is one new candidate modulation scheme for emergent Fifth Generation (5G) communication systems. This paper focuses on Universal Filtered Multi-Carrier (UFMC) design aspects in terms of Bit Error Rate (BER) performance in relation to the filter length used in subband filtering. Simulation results show that BER and CCDF performance varies for different filter lengths and modulation schemes. The main achievement of this work is that the results show that different Dolph–Chebyshev FIR filter lengths do not affect the BER performance both for the 64 and 256 QAM.
Highlights
The 4G communication systems, mainly LTE and Wi-Fi, widely adopted orthogonal frequency division multiplexing (OFDM) as the dominant multicarrier modulation technique
This paper focuses on the new modulation technique known as Universal Filtered MultiCarrier (UFMC) and compares it with OFDM within a generic framework
Simulation results clearly show that the Bit Error Rate (BER) performance of the Universal Filtered Multi-Carrier (UFMC) modulation scheme is increased when the FFT size increases, as it is seen from the comparison of Figures 4–7
Summary
The 4G communication systems, mainly LTE and Wi-Fi, widely adopted OFDM as the dominant multicarrier modulation technique. OFDM presents some major disadvantages that are not often highlighted These are, mainly, the strict synchronization requirements [4] and the loss in spectral efficiency due to higher sidelobes and Cyclic Prefix insertion [5], the loss of orthogonality due to imperfect synchronization, the amplifier inefficiency due to large peak to average power ratio (PAR), the high out-of-band power, and the need for subcarrier intermodulation reduction. Another major drawback is the intercarrier interference (ICI). Taking the above into account, new modulation techniques are being considered for (UFMC) transmission scheme is one new candidate modulation scheme for emergent Fifth
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