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Toplam kayıt 43, listelenen: 31-40
Performance analysis of OTFS under in-phase and quadrature imbalance at transmitter
(IEEE-Institute of Electrical and Electronics Engineers Inc., 2021)
The influence of in-phase and quadrature (IQ) imbalance on the performance of orthogonal time frequency space (OTFS) transmission is investigated in this work. OTFS is a recent two-dimensional transmission scheme with ...
Flexible numerology in 5G NR: Interference quantification and proper selection depending on the scenario
(Hindawi Ltd, 2021)
The 3rd Generation Partnership Project (3GPP) adopted cyclic prefix OFDM (CP-OFDM) for both uplink and downlink communications (although DFT-s-OFDM is also allowed in the uplink) in 5G New Radio (NR) Release 15. However, ...
Efficient spectrum occupancy prediction exploiting multidimensional correlations through composite 2D-LSTM models
(MDPI, 2021)
In cognitive radio systems, identifying spectrum opportunities is fundamental to efficiently use the spectrum. Spectrum occupancy prediction is a convenient way of revealing opportunities based on previous occupancies. ...
A secure downlink NOMA scheme against unknown internal eavesdroppers
(IEEE-Institute of Electrical and Electronics Engineers Inc., 2021)
Enhancing security level against potential internal eavesdroppers in Non-Orthogonal Multiple Access (NOMA) has been reported as a serious challenge. In this letter, a novel secure NOMA scheme based on physical-layer security ...
Inter-numerology interference in OFDM-IM systems
(Wiley, 2021)
In 5G and beyond communication systems, distinct numerologies can coexist to serve diverse requirements for users and applications. However, the inter-numerology interference (INI) is a main challenge that significantly ...
A novel frame design for integrated communication and sensing based on position modulation
(Institute of Electrical and Electronics Engineers Inc., 2021)
In this paper, a novel frame design for integrated communication and sensing is proposed. The proposed frame structure consists of Barker radar sequence and binary phase shift keying (BPSK) modulated data bits. The temporal ...
Radio environment monitoring
(Wiley, 2021)
The high number of wireless devices available and the inherent relationship between electromagnetic wave propagation and the physical environment have made these devices and their network architectures ideal sources of ...
Analysis of single-carrier communication systems
(Wiley, 2021)
This chapter discusses some of the fundamental concepts related to single-carrier communication. It focuses on the practical aspects of the implementation, analysis, and performance measurement of single-carrier systems. ...
Wireless channel and interference
(Wiley, 2021)
This chapter focuses on various critical aspects of wireless channel starting with explanation of the dominant propagation phenomena and their resultant effects on the system. It then touches upon mechanisms employed for ...
Blind signal analysis
(Wiley, 2021)
Blind signal analysis (BSA) plays an essential role in wireless communication when the receiver does not know most or all of the received signal parameters. This chapter provides an in-depth understanding of BSA with ...