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2019
This article give explanation about the aspects of Universal Filtered Multi Carrier system and give us an initiative about the merits of latest modulation technique for expanding 5G Communication Systems. In 4G technology Orthogonal Frequency Division Multiplexing is an excellent choice but it also has some demerits. OFDM method has some problems of high Peak to Average Power Ratio (PAPR), Side band leakage is another problem in OFDM. By taking into consideration the above parameters a stir to another technique called Universal Filtered Multi Carrier (UFMC) is used because of good spectrum usage. This paper also clarifies about the UFMC system model. Based on the Simulation results in MATLAB, the spectrum exploitation of UFMC system is much better than OFDM system.
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...
Turkish Journal of Computer and Mathematics Education, 2021
The advanced wireless communication system uses the new technology, preparing the limited radio spectrum and its low expensive resource. The Scenario of Wireless communication is needed for the flexible mechanism with available time and frequency resources. The OFDM system, which is a multicarrier process with a remote framework in Long Term Evolution (LTE), 4G, and 5G. Using of UFMC(Universal_Filtered_Multicarrier)system with OFDM system symmetrical recurrence division multiply with modulation system and the correlation between them. Using of UFMC system with QAM into the MIMO system the result of subchannel, the model channel correlation recreated in " A Simulational Performance of 5G MIMO Systems applying UFMC (Universal_Filtered_Multicarrier) Study" result shown in MATLAB.
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.
2019
To design a new waveform for 5G communications with a lower peak / average power ratio and a high Spectra Efficiency methods / Statistical 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: Spectral 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
arXiv (Cornell University), 2018
Polynomial-cancellation-coded orthogonal frequency division multiplexing (PCC-OFDM) is a form of OFDM that has waveforms which are very well localized in both the time and frequency domains and so it is ideally suited for use in the 5G network. This paper analyzes the performance of PCC-OFDM in the uplink of a multiuser system using orthogonal frequency division multiple access (OFDMA) and compares it with conventional cyclic prefix OFDM (CP-OFDM), and universal filtered multicarrier (UFMC). PCC-OFDM is shown to be much less sensitive than either CP-OFDM or UFMC to time and frequency offsets. For a given constellation size, PCC-OFDM in additive white Gaussian noise (AWGN) requires 3dB lower signal-to-noise ratio (SNR) for a given bit-error-rate, and the SNR advantage of PCC-OFDM increases rapidly when there are timing and/or frequency offsets. For PCC-OFDM no frequency guard band is required between different OFDMA users. PCC-OFDM is completely compatible with CP-OFDM and adds negligible complexity and latency, as it uses a simple mapping of data onto pairs of subcarriers at the transmitter, and a simple weighting-and-adding of pairs of subcarriers at the receiver. The weighting and adding step, which has been omitted in some of the literature, is shown to contribute substantially to the SNR advantage of PCC-OFDM. A disadvantage of PCC-OFDM (without overlapping) is the potential reduction in spectral efficiency because subcarriers are modulated in pairs, but this reduction is more than regained because no guard band or cyclic prefix is required and because, for a given channel, larger constellations can be used.
International Journal of Electrical and Computer Engineering (IJECE), 2019
Rapid developments in modern wireless communication permit the trade of spectrum scarcity. Higher data rate and wider bandwidth emerge the development in growing demand of wireless communication system. The innovative solution for the spectrum scarcity is cognitive radio (CR). Cognitive radio is the significant technology used to utilize the spectrum effectively. The important aspect of CR is sensing the spectrum band and detects the presence or absence of the primary user in the licensed band. Moreover, another serious issue in next generation (5G) wireless communication is to decide the less complex 5G waveform candidate for achieving higher data rate, low latency and better spectral efficiency. Universal filtered multi-carrier (UFMC) is one of the noticeable waveform candidates for 5G and its applications. In this article, we investigate the spectrum sensing methods in multi-carrier transmission for cognitive radio network applications. Especially, we integrate the sensing algorithm into UFMC transceiver to analyze the spectral efficiency, higher data rates and system complexity. Through the simulation results, we prove that the UFMC based cognitive radio applications outperform the existing Orthogonal Frequency Division Multiplexing (OFDM) based CR applications. 1. INTRODUCTION An explosive growth in wireless communication focuses on designing the appropriate waveform. The primary goal of 5G is non-orthogonal waveform for maintaining synchronism in a system. The concept of 5G attracts the attention of industries, standardization bodies and a lot of researcher communities. The requisite for the design of 5G radio access is to provide higher connectivity and higher spectral efficiency. In recent years, several numbers of waveform candidates had been proposed for the improvement of higher data rate, low latency, high mobility and better spectrum reuse [1]. UFMC is one of the suitable 5G non-orthogonal waveform candidates who comprise the features of filtered OFDM and filter bank multi-carrier (FBMC). 5G waveform candidates offer best localization of frequency and time to fix with diverse applications like the machine to machine communication (M2M), Internet of Things (IoT), millimeter wave communication [2-4] and cognitive radio network applications. The present cellular communication networks were working based on OFDM multicarrier modulation technology [5-7]. Even though it helps for the current discussion, appending cyclic prefix squander some bandwidth. It leads to the system to spectral inefficiency. To avoid such a scenario, next-generation mobile communication improves by a robust non-orthogonal waveform candidate with cognitive radio applications, ie, UFMC-CR.
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 ...
2016
A wireless communication is looking for higher bandwidth with greater spectral efficiency. Multicarrier communication technology has been suggested as a suitable candidate to utilize the white spaces in the spectrum. OFDM was the first multicarrier technique proposed for 4G (LTE-A) and has been successfully deployed in 4G systems. But due to the use of cyclic prefix and the high PAPR the OFDM communication system cannot be suitable for 5Gs. This paper discusses how FBMC can be designed and proves that it is the most efficient waveform selection for next generation wireless communication i.e. 5G communication system. Keywords— FBMC, Offset, Filter Bank, Polyphase Network, Sub Channel Equalization, 5G Wireless Technologies.
2018
In recent times, new waveforms for 5G have been explored in multiple ways. It is difficult for the current mobile communication to assist the future mobile traffic requirement. To overcome this issue, studies have been carried out in 5 th generation mobile communication has been. New waveforms such as UFMC (universal filtered Multi-carrier), FBMC (filtered bank Multi-carrier), F-OFDM (filtered orthogonal frequency division multiplexing) and W-OFDM (windowed-OFDM) are considered as very substantial candidates in respect of 5G system. An attempt has been made to evaluate the spectral properties of waveforms in this paper. The experimental results proved that the effective utilization of spectrum for each waveform.
Electronics, 2021
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.
The review of various multiplexing techniques which are used in different mobile communication networks and wireless system. The most emergent and used wireless communication technologies now a days are 3G and 4G, also termed as LTE technique. The most efficient multiple access for wireless technologies is OFDM system, which has been adopted for 3G and also 4G-LTE. Now as the technology is being advanced to fifth generation technique, there are some drawbacks of OFDM system so the new various filtering techniques are the emerging waveform contenders for 5G wireless technology which are FBMC, UFMC and OFDM. All the two techniques have been discussed here in this paper.
TELKOMNIKA Telecommunication Computing Electronics and Control, 2020
Fifth generation (5G) mobile communication is expected to be deployed in several countries by 2020. Where, the data consumptions are expected to be increased to 30% thus, it cannot be supported by the present technologies 3G and 4G. In contrast, looking for new alternative modulation techniques of orthogonal frequency division modulation (OFDM) system which is suffering from high peak to average power ratio (PAPR) and out of band (OOB) side lobes are needed to use in 5G communication system. Hence, universal filtered multi-carrier (UFMC) is considered as alternative waveform to overcome of OFDM disadvantages. In communication systems, channel coding is considered vital part, where error correction codes (ECC) are used to detect and correct the errors which is occurring in channel noise. In this paper, RS codes are suggested with UFMC system to achieve the reliability of information transmission over noisy channels. The results showed that although, the values of PAPR levels for using RS codes in UFMC increased to 8.8653dB against 6.9735 dB for OFDM system. However, there are significant improvements in BER performance owing to use RS codes against uncoded-UFMC system. Furthermore, the values of OOB in UFMC system was lower than OFDM system. Keywords: OFDM OOBE PAPR RS UFMC This is an open access article under the CC BY-SA license.
2021
In the advancement of technological era, Communication being the first and foremost important aspect of technology which is improving day by day. In order to step forward towards the innovations, this “PERFORMANCE OF CPOFDM, PCC-OFDM AND UFMC-OFDM FOR 5G UPLINK COMMUNICATIONS” has been undertaken. In this system we are using PCC-OFDM which is suitable for 5-G uplink communication. As it's miles localized in each time and frequency area.%-OFDM in Additive White Gaussian Noise (AWGN) calls for 3 dB decrease sign-To-Noise Ratio (SNR) for a given Bit-mistakes-charge(BER), and the SNR benefit of PCCOFDM will increase swiftly while there are timing and/or frequency offsets and it compares PCC-OFDM(PolynomialCancellation-Coded-Orthogonal Frequency Division Multiplexing) with CP-OFDM(Cyclic Prefix Orthogonal Frequency Division Multiplexing) and UFMC-OFDM(Universal Filtered Multicarrier Orthogonal Frequency Division Multiplexing ) in the uplink of multiuser system using OFDMA(Orthogonal ...
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.
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.
Symmetry
The new generation of wireless communication systems has adopted different waveforms. The universal filtered multicarrier is one of the adopted candidates that has symmetry with various numerology designs. However, the high peak to average power ratio is one of the major limitations faced by universal filter multicarrier (UFMC) designers. Moreover, recent studies utilize cubic metric along with the peak to average power ratio (PAPR) to show the power back-off effect of the signal in which the PAPR metric identifies the maximum peak and the cubic metric (CM) identifies the Out of Band emission and In-Band distortion. Most of the current solutions, such as amplitude clipping, tone reservation, and active constellation extension, decrease the PAPR but cause degradation to the bit error rate. Selected mapping is one of the promising techniques that is recently used to solve the PAPR and CM problems without causing bit error rate (BER) degradation. In this paper, the selected mapping (SL...
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
TELKOMNIKA, 2023
With the demand for mobile data traffic, multi-carrier transmission techniques are highly attractive for all-new wireless communication systems, which divides data into many components and sends each of these components via a different carrier signal. So far, orthogonal frequency division multiplexing (OFDM) and filter bank multi-carrier (FBMC) techniques are the dominant waveform contenders. A number of studies have been made and failed to give a complete comparison where they did not consider various conditions altogether. Therefore, this paper addresses a complete comparative analysis of OFDM and FBMC, performed based on spectral efficiency, modulation, demodulation, power spectral densities, and peak to average power ratio comparison, all simulated using Matlab and GNU's not unix radio (GNU-radio) software.
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