Comparison of Various Modulation Techniques of DM, FBMC & UFMC

International Journal of Innovative Research in Technology, 2019

To design a new waveform for 5G communications with a lower peak / average power ratio and a high S pectra Efficiency methods / S tatistical analysis: In this document, orthogonal frequency division multiplexing (OFDM), filter bank Multi-carrier (FBMC) and Universal Multi-Conveyor Filtered (UFMC) are compared and the PAPR of these techniques is analyzed Applying different subcarriers and modulation techniques. Discoveries: S pectral efficiency is poor in OFDM due to presence of a cyclic prefix and efficiency can be improved by FBMC and UFMC. The use of separate filters for individuals. the subcarriers eliminate the cyclic prefix and an increase in the subcarriers further reduces the PAPR. The PAPR varies according to the modulation techniques used. Application / improvements: UFMC is the best waveform technique for 5Gwhen compared to OFDM and FBMC, which will have less PAPR and PAPR is further reduced by applying Optimization techniques

Journal of Southwest Jiaotong University

In this study, filtered orthogonal frequency division multiplexing (F-OFDM) and universal filtered multicarrier (UFMC) were proposed for complexity reduction in the 5G waveform. Cyclic prefix orthogonal frequency division multiplexing (CP_OFDM) is well suited for 4G; however, the major problem of the 4G modulation methods is their susceptibility to high peak to average power ratio (PAPR). Another problem of OFDM is the issue of sideband leakage. The existing 4G systems mainly depend on the CP_OFDM waveform, which cannot support the host of applications provided by the 5G platform. 5G-generated traffic is likely to exhibit different features and requirements compared to the existing wireless technology. Consequently, investigations have been devoted to other multiple access schemes. The existing limitations of OFDM can be mitigated by using the UFMC technique. To ensure that the demands and requirements of the upcoming 5G cellular networks are satisfied, this study presents an enable...

International Journal for Research in Applied Science & Engineering Technology (IJRASET), 2022

This article describes about to analyse the spectral efficiency of different modulation techniques in OFDM and UFMC. UFMC is a multi-carrier modulation technique in fifth generation network (5G). In this paper, we review the different modulation techniques in 5G technology and motivate the need of UFMC technique in 5G wireless communication. In 4G OFDM modulation technique, some drawbacks like side band leakages, high Peak to Average Power ratio (PAPR) and spectrum utilization degrades the performance of the system. Another multi carrier technique called Filter Bank Multi carrier (FBMC) which is better than OFDM, have some issues in practical aspects. So by considering the above parameters a move to another technique called Universal Filtered Multi Carrier (UFMC) is used because of good spectrum usage. This paper also explains about the UFMC system model. Based on the Simulation results in MATLAB, the spectrum utilization of UFMC system is much better than OFDM system.

The fifth generation mobile communication will be deployed in many countries by 2020 which aims to furnish a real wireless world free from present obstacles in communication system which is a great motivating factor for all the researchers, academicians and engineers. The new technologies are being investigated that provide high speed, capacity, spectral efficiency, energy efficiency, pseudo outdoor communication, etc. that solves the existing problems in mobile communication system. This paper aims to highlight the aspects of Multicarrier modulation scheme which is popular with Fifth Generation (5G) with Filter Bank Multi Carrier (FBMC) modulation scheme. OFDM is an incredible Multiple Access Modulation strategy adopted in Fourth Generation (4G) communication system even though it is not exempt of defects. OFDM suffers from the difficulty of Side band leakage. To overcome this, FBMC modulation scheme is used. This paper gives an overview of dominant metrics like Power Spectral Density (PSD), Bit Error Rate (BER) of forthcoming Cellular Communication System's modulation scheme. The simulation results of FBMC under perfect channel assumption gives BER values of 0.010213, 0.009945 for K=3, 4 respectively at a Signal to Noise Ratio (SNR) of 5dB. It is also observed that the effect of Rayleigh and Rician channels in FBMC give BER values of 0.49988, 0.5081 and 0.15615, 0.12549 for K=3, 4 respectively. From the simulation results it is observed that, FBMC outperforms the most popularity gained by 4G modulation technique.

Research & Development in Material Science

One of the main objectives of multicarrier modulation is to provide multiple accesses for wireless communication systems with higher data rates while having minimum out of band radiation, high spectral efficiency and less complexity. Orthogonal frequency division multiplexing (OFDM), Universal filter multicarrier (UFMC), Filter bank multicarrier (FBMC) and Generalized frequency division multiplexing (GFDM) modulation techniques have been developed to support fourth generation and beyond 4G wireless systems. Demand of high data rate in fourth generation wireless communication systems has been fulfilled by OFDM techniques but it suffers from the limitation of less spectral efficiency and high PAPR (Peak to average power ratio). Thus to support next generation wireless systems other waveform models are getting attention. Among the techniques available, UFMC seems to be attractive due to high spectral efficiency and less complexity. It has not explored much so in this paper, performance of UFMC have been evaluated with different design factors such as number of sub bands, FFT (Fast Fourier Transform)size, filter characteristics and modulation under the light of PAPR.

In this paper OFDM modulation was studied and its problems highlights UFMC modulation is studied and presented as a candidate for 5G waveform. The problem of High PAPR in OFDM was also discussed with UFMC simulation carried out using three different window filters to see which provided the lowest PAPR for utilization in UFMC subband filtering. Findings: it was discovered that the Bohwin window produced the lowest PAPR value among its other two counterparts names chebvev and Bartlett Overall is discovered that UFMC is better than OFDM in terms of PAPR and ability to carry higher data rate than OFDM. I.INTRODUCTION The expected applications that 5G applications will be utilized in includes high speed applications for multimedia, gaming, cloud based applications, Internet of things, vehicle peering system, The potential applications for 5G including high data transmission for videos, Internet of things, vehicle to vehicle pairing, faster streaming, augmented reality 5G tech is 200 times faster than 4G allowing for massive amount of data to be transporter instantly…5G uses ultrahigh broadcast frequency.5G support multiple gigabyte connection.5G is the communication standard that can lower latency, more reliable and dependable…the possibility of virtual reality and augmented reality with possibility of virtual reality applications and establishing communication between industrial equipment in a peer to peer connection. This is the point in time when more things are connected to the internet than people. Appliances security systems, health monitor, door locks, educational network, assistive technologies and the many. Capability in handling high data rate with wide bandwidth, the issue of very low latency for data bursts either short of long, consideration for transmission time intervals which is needed to be short and fast switching between downlink and uplink are important requirements for any modulation scheme that will support 5G communication system. And for low data rate devices, the possibility of energy efficient communication system by reducing the on-times for low data rates transmission. These are a few of the requirements that are needed for 5G waveforms to support the facilities that are needed. II.THEORETICAL BACKGROUND IN BRIEF 5G BACKGROUNDS Several new forms of OFDM have been proposed for 5G applications, such as CP-OFDM, F-OFDM, W-OFDM, GFDM, UFMC, and FBMC. The need for more robust multicarrier modulation scheme for higher data rates the bandwidth spectral efficiency is the motivation for the development of filtered multicarrie modulation scheme. Orthogonal frequency division multiplexing has been an excellent waveform choice for 4G. It provides outstanding spectrum efficiency, it can be managed and controlled with the processing levels attainable in current mobile handsets, and it operates well with high data rate stream occupying wide bandwidths. It operates well in circumstances where there is selective fading. It is expected that by the official rollout of 5G in 2020 many more waveform will be tested to ensure which meets the requirement for 5G standards or data transmission. This paper seeks to look at one of the many modulation schemes that can give 5G data transmission capability. OFDM the multicarrier modulation scheme is the major backbone of 4G LTE systems and definitely OFDM variants with filtering addition are the possibility of 5G waveform. [1] OFDM requires the use of a cyclic prefix and this occupies space within the data streams. There are also other advantages that can be introduced by using one of a variety of new waveforms for 5G. OFDM, orthogonal frequency-division multiplexing. OFDM decomposes the transmission frequency band into a group of narrower contiguous sub bands (carriers), and each carrier is individually modulated. Such a modulation can be simply realized by an inverse fast Fourier

Acta Electrotechnica et Informatica

One of the main objectives of multicarrier modulation is to provide multiple accesses for wireless communication systems with higher data rates while having minimum out of band radiation, high spectral efficiency and less complexity. Orthogonal frequency division multiplexing (OFDM), Universal filter multicarrier (UFMC), Filter bank multicarrier (FBMC) and Generalized frequency division multiplexing (GFDM) modulation techniques have been developed to support fourth generation and beyond 4G wireless systems. Demand of high data rate in fourth generation wireless communication systems has been fulfilled by OFDM techniques but it suffers from the limitation of less spectral efficiency and high PAPR (Peak to average power ratio). Thus to support next generation wireless systems other waveform models are getting attention. Among the techniques available, UFMC seems to be attractive due to high spectral efficiency and less complexity. It has not explored much so in this paper, performance of UFMC have been evaluated with different design factors such as number of sub bands, FFT (Fast Fourier Transform) size, filter characteristics and modulation under the light of PAPR.

ECTI Transactions on Computer and Information Technology (ECTI-CIT)

The 5G wireless access technology will supersede its predecessor, 4G, in the current decade, at first coexisting with it and later as a standalone technology. This work examines and compares the performance of the following orthogonal multicarrier schemes: Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM), Windowed Orthogonal Frequency Division Multiplexing (W-OFDM), Filtered Orthogonal Frequency Division Multiplexing (F-OFDM), Universal Filtered Multi-Carrier (UFMC), and Filter Bank Multi-Carrier (FBMC). The system architecture of each scheme is investigated while considering the performance in fading channel models. The simulation was performed using a standard set of parameters, and the performance was appraised based on Power Spectral Density (PSD), Peak to Average Power Ratio (PAPR), Complementary Cumulative Distribution Function (CCDF) of PAPR, Bit Error Rate (BER), and Signal to Noise Ratio (SNR). In addition, a comprehensive analysis is presented concerning ...

International Journal of Trend in Scientific Research and Development, 2018

This paper presents an extensive and fair comparison among the most promising waveform contenders for the 5G air interface which includes-Filtered OFDM, Filter-bank multi carrier (FBMC), universal multi-carrier (UFMC) has been compared with OFDM in terms of spectral efficiency and rate using mat lab. The disadvantages of OFDM have been addressed and it has shown that (fofdm), (UFMC), (FBMC) could be a more effective solution. FBMC is a method for improving out of band (OOB) characteristics by filtering each subcarrier, it is also expected to improve the Inter-Carrier Interference (ICI) characteristics while UFMC is a method for improving OOB characteristics by filtering each block.

Electronic Government, an International Journal, 2017

As the world, is looking for more data speeds along with support for M2M communication in the next generation (5G), the current orthogonal frequency division multiplexing (OFDM) has limitations such as high PAPR, spectrum wastage due to cyclic prefix (CP), out of band (OOB) emissions. To overcome these limitations, 5G researchers is looking for different wave forms and filter bank multi carrier (FBMC) waveform is one of the prime contenders. In this paper, it has been implemented, the poly-phase network filter bank multi carrier (PPN-FBMC), which reduces the high complexity and computations. A prototype filter for the PPN FBMC with high overlapping factors (K = 6 and 8) are implemented. It also simulates FBMC system using Matlab Software, to characterise and analyse the 5G candidate waveform FBMC and compare with OFDM, in terms of error vector magnitude (EVM), peak to average power ratio (PAR), and power spectral density (PSD) performance. The simulated results prove that FBMC outperforms the OFDM systems in all the above mentioned aspects, even under noisy conditions.