An Investigation of Flexible Waveform Numerologies for 5G V2I Cellular Networks from a Physical Layer Perspective

Stoynov, Viktor; Mihaylova, Dimitriya; Valkova-Jarvis, Zlatka; Iliev, Georgi; Poulkov, Vladimir

doi:10.1109/comcas44984.2019.8958075

Cited by 3 publications

(3 citation statements)

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“…We define that D ′ denotes a set consisting of all constraints (27b)-(27f), and integer relaxation in (28) and (29). Benefited by relaxing discrete variables, the optimization problem in (27) is equivalent to the following one…”

Section: A Problem Transformationmentioning

confidence: 99%

“…Accordingly, the nextgeneration wireless network is prospected to flexibly accommodate mobility-aware channels. Under high-speed scenario, it has to overcome the performance degradation induced by intercarrier interference (ICI) from Doppler spread effect [28]. While, it also requires to conquer inter-symbol interference (ISI) caused by delay spread [28].…”

Section: Introductionmentioning

confidence: 99%

“…Under high-speed scenario, it has to overcome the performance degradation induced by intercarrier interference (ICI) from Doppler spread effect [28]. While, it also requires to conquer inter-symbol interference (ISI) caused by delay spread [28]. As for multi-numerology, the system becomes more robust to interference where flexible RB with large SCS can reduce ICI, whereas small SCS can be applied against the ISI effect.…”

Section: Introductionmentioning

confidence: 99%

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Energy Efficient Resource Allocation for Multinumerology Enabled Hybrid Services in B5G Wireless Mobile Networks

Shen

Feng

2023

IEEE Trans. Wireless Commun.

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Multi-numerology (MN) providing a flexible transmission frame structure has attracted a considerable attention for supporting abundant services for beyond fifth-generation (B5G) networks. However, mobility induces severe performance degradation under different numerologies including temporal and spectral fluctuation, which is not well-investigated in existing literature. We have conceived an MN-enabled energy efficiency (EE) problem aiming for alleviating mobility-and MN-induced interferences through moderate power and sub-carrier assignment, while considering quality-of-service (QoS) and latency requirements for different services. We propose a multi-numerology based power and resource block allocation (MNPRA) scheme considering time-/frequency-division (TD/MD) based MN leveraging temporal and spectral features among numerologies. The original non-solvable problem is theoretically transformed into a convex one by employing Dinkelbach process, Taylor approximation and difference of two concave functions (D.C.). Convergence of proposed MNPRA scheme is analyzed and verified by simulations. In simulation results, we have evaluated MNPRA under different service demands, user velocities and MN types. Our proposed scheme outperforms the conventional single-numerology framing and existing methods in open literature, which results in performances of higher EE as well as of lower throughput/delay outage probability.

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Section: A Problem Transformationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%