Transceiver Design for GFDM with Hexagonal Time–Frequency Allocation Using the Polyphase Decomposition

Catak, Evren; Moldsvor, Arild; Derawi, Mohammad

doi:10.3390/electronics9111862

Cited by 4 publications

(2 citation statements)

References 29 publications

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“…Relatedly, Pons et al [19] proposed a vertical handover decision algorithm for improving the energy efficiency of a battery-limited device with both LTE and wireless local area network connection interfaces. In addition, Catak et al [20] proposed a hexagonal generalized frequency division multiplexing model using polyphase decomposition to reduce computational complexity and latency for transceivers in 5G systems and beyond.…”

Section: Related Workmentioning

confidence: 99%

An Effective Toss-and-Catch Algorithm for Fixed-Rail Mobile Terminal Equipment That Ensures Reliable Transmission and Non-Interruptible Handovers

Chung

2021

Symmetry

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The physical characteristics of fifth generation (5G) cellular network wavelengths result in quicker attenuation and smaller base station (BS) coverage area, which in turn, cause BSs to naturally transform into small cell BSs (SBSs). However, in the case of fixed-rail transportation, they often cover long distances when deployed and pass by multiple SBSs; hence, the connection of the terminal equipment in these forms of transportation is subjected to frequent handovers. Therefore, it is important to address the issue of identifying suitable SBSs for each handover such that a certain level of service quality and non-interruptible transmission can be achieved. In the present study, we proposed a new handover selection algorithm named the toss-and-catch algorithm. By means of an efficient SBS selection mechanism and configuration settings, the algorithm selects suitable SBSs to ensure reliable transmission and non-interruptible handovers. Meanwhile, with the assistance of an overload support mechanism, the algorithm is able to resist changes in channel environments under most conditions. In order to apply our results in more realistic channel environments, we performed all-inclusive simulations based on different symmetric fading channel environments, with the aim of developing more practical SBS selection and handover methods for mobile terminal equipment. The multitude of simulation results indicates that from the perspective of terminal equipment in fixed-rail transportation, under most conditions, the performance of the toss-and-catch algorithm in terms of signal quality and handover connection was superior to those of other conventional methods. For example, the toss-and-catch algorithm outperformed the random SBS selection method in a typical fading channel environment (e.g., Nakagami-1 fading), achieving, on average, an approximately 28% improvement in signal quality, an approximately 50% reduction in the disconnection rate for handover connections, and an approximately 71% improvement in processable load ratio. These results indicate that the toss-and-catch algorithm allows for a greater number of suitable SBS handover candidates to be identified, making it a promising SBS handover selection mechanism for 5G fixed-rail transportation networks.

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Section: Related Workmentioning

confidence: 99%

An Effective Toss-and-Catch Algorithm for Fixed-Rail Mobile Terminal Equipment That Ensures Reliable Transmission and Non-Interruptible Handovers

Chung

2021

Symmetry

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“…The CP insertion method of GFDM is spectrally more efficient than that of OFDM because a CP is added to each block consisting of multiple sub-symbols. This will also lead to lower latency in GFDM systems [17].…”

Section: Introductionmentioning

confidence: 99%

Novel Successive Interference Cancellation (SIC) With Low-Complexity for GFDM Systems

et al. 2022

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Generalized frequency-division multiplexing (GFDM) is one of the promising multi-carrier modulation schemes suitable for next-generation wireless communication systems. The main characteristic of GFDM is the flexible time-frequency structure of data blocks. However, this degree of freedom is obtained at the cost of loss of sub-carrier orthogonality, which leads to self-interference. In this paper, we propose a new model that classifies the GFDM self-interferences into two independent categories as inband and adjacent sub-carriers interferences and show their corresponding mathematical formulations. Building on this model, we propose a successive interference cancellation (SIC) technique with low complexity to eliminate these self-interference effectively. The main distinct feature of our proposed technique is its low computational complexity compared to similar interference cancellation techniques. Our analytical findings and numerical experiments indicate that the proposed model and SIC technique considerably improve the system performance in terms of bit error rate (BER) and signal to interference ratio (SIR). We also show that the results of our analytical findings are in good agreement with those of computer simulations.INDEX TERMS 5G, GFDM, multi-carrier, SIC, BER.

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PAPR reduction using polynomial based compressing with Rapp model in GFDM

Naganjaneyulu,

Sreenivasulu,

Nageswara Rao

et al. 2024

e-Prime - Advances in Electrical Engineering, Electronics and E

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Transceiver Design for GFDM with Hexagonal Time–Frequency Allocation Using the Polyphase Decomposition

Cited by 4 publications

References 29 publications

An Effective Toss-and-Catch Algorithm for Fixed-Rail Mobile Terminal Equipment That Ensures Reliable Transmission and Non-Interruptible Handovers

An Effective Toss-and-Catch Algorithm for Fixed-Rail Mobile Terminal Equipment That Ensures Reliable Transmission and Non-Interruptible Handovers

Novel Successive Interference Cancellation (SIC) With Low-Complexity for GFDM Systems

PAPR reduction using polynomial based compressing with Rapp model in GFDM

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