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Novel Universal Windowing Multicarrier Waveform for 5G Systems

Computers, Materials & Continua 2021年第5期67卷 1523-1536页

作者： ahmed hammoodi Lukman Audah Montadar Abas Taher Mazin Abed Mohammed Mustafa S.Aljumaily Adeeb Salh Shipun A.Hamzah Wireless and Radio Science Centre Faculty of Electrical and Electronic EngineeringUniversiti Tun Hussein Onn MalaysiaParit Raja86400Malaysia Department Communications Engineering University of DiyalaBaqubah32001Iraq College of Computer Science and Information Technology University of AnbarAnbar31001Iraq Department of Electrical Engineering and Computer Science University of TennesseeKnoxvilleTN37901USA

Fifth Generation(5G)systems aim to improve flexibility,coexistence and diverse service in several aspects to achieve the emerging applications *** and filtering of the traditional multicarrier waveforms are now considered common sense when designing more flexible *** paper proposed a Universal Windowing Multi-Carrier(UWMC)waveform design platform that is flexible,providing more easily coexists with different pulse shapes,and reduces the Out of Band Emissions(OOBE),which is generated by the traditional multicarrier methods that used in the previous generations of the mobile *** novel proposed approach is different from other approaches that have been proposed,and it is based on applying a novel modulation approach for the Quadrature-Amplitude Modulation(64-QAM)which is considered very popular in mobile *** new approach is done by employing flexible pulse shaping windowing,by assigning windows to various *** leads to decreased side-lobes,which are going to reduce OOBE and boost the spectral efficiency by assigning them to edge subscribers *** new subband windowing(UWMC)will also maintain comprehensively the non-orthogonality by a variety of windowing and make sure to keep window time the same for all *** addition,this paper shows that the new approach made the Bit Error Rate(BER)equal to the conventional Windowed-Orthogonal Frequency Division Multiplexing(W-OFDM).This platform achieved great improvement for some other Key Performance Indicators(KPI),such as the Peak to Average Power Ratio(PAPR)compared with the conventional(W-OFDM)and the conventional Universal Filtered Multicarrier(UFMC)*** particular,the proposed windowing scheme outperforms previous designs in terms of the Power Spectral Density(PSD)by 58%and the(BER)by 1.5 dB and reduces the Complementary Cumulative Distribution Function Cubic Metric(CCDF-CM)by 24%.

关键词： 5G waveform window-OFDM universal filtered multi-carrier key performance indicators

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Monitoring Peer-to-Peer Botnets:Requirements,Challenges,and Future Works

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Computers, Materials & Continua 2023年第5期75卷 3375-3398页

作者： Arkan hammoodi Hasan Kabla Mohammed Anbar Selvakumar Manickam Alwan ahmed Abdulrahman Alwan Shankar Karuppayah National Advanced IPv6 Centre(NAv6) Universiti Sains MalaysiaPulau Pinang11800Malaysia

The cyber-criminal compromises end-hosts(bots)to configure a network of bots(botnet).The cyber-criminals are also looking for an evolved architecture that makes their techniques more resilient and stealthier such as Peer-to-Peer(P2P)*** P2P botnets leverage the privileges of the decentralized nature of P2P ***,the P2P botnets exploit the resilience of this architecture to be arduous against take-down *** P2P botnets are smarter to be stealthy in their Commandand-Control mechanisms(C2)and elude the standard discovery ***,the other side of this cyberwar is the *** P2P botnet monitoring is an exacting mission because the monitoring must care about many aspects *** aspects pertain to the existing monitoring approaches,some pertain to the nature of P2P networks,and some to counter the botnets,i.e.,the anti-monitoring *** these challenges should be considered in P2P botnet *** begin with,this paper provides an anatomy of P2P ***,this paper exhaustively reviews the existing monitoring approaches of P2P botnets and thoroughly discusses each to reveal its advantages and *** addition,this paper groups the monitoring approaches into three groups:passive,active,and hybrid monitoring ***,this paper also discusses the functional and non-functional requirements of advanced *** conclusion,this paper ends by epitomizing the challenges of various aspects and gives future avenues for better monitoring of P2P botnets.

关键词： P2P networks botnet P2P botnet botnet monitoring honeypot crawlers

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