On Regular Resource Grid for Filtered OFDM

Weitkemper, Petra; Bazzi, Jamal; Kusume, Katsutoshi; Benjebbour, Anass; Kishiyama, Yoshihisa

doi:10.1109/lcomm.2016.2572183

Cited by 26 publications

(13 citation statements)

References 5 publications

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“…Effects of guards analyzed in [14,[17][18][19]. Different filtering techniques are provided in [9,[14][15][16]. Moreover, windowing methods are discussed in [6,13,14].…”

Section: Ini Reduction Techniquesmentioning

confidence: 99%

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Flexible Multi-Numerology Systems for 5G New Radio

Yazar

Arslan

2018

JMM

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The physical layer of 5G cellular communications systems is designed to achieve better flexibility in an effort to support diverse services and user requirements. Orthogonal frequency division multiplexing (OFDM) waveform parameters are enriched with flexible multi-numerology structures. This paper gives a short summary for the Third Generation Partnership Project (3GPP) New Radio (NR) standard and then describes the differences of building blocks for Long Term Evolution (LTE) systems and NR from the flexibility perspective. Research opportunities for multi-numerology systems are presented in a structured manner. Finally, inter-numerology interference (INI) and signal-to-interference ratio (SIR) results as a function of multinumerology parameters, guard allocation and user power levels are obtained through computer simulations.

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“…Effects of guards analyzed in [14,[17][18][19]. Different filtering techniques are provided in [9,[14][15][16]. Moreover, windowing methods are discussed in [6,13,14].…”

Section: Ini Reduction Techniquesmentioning

confidence: 99%

“…Various inter-numerology interference (INI) estimation and cancellation methods are provided in [6,9,13]. Moreover, INI reduction techniques are proposed in [6,9,[13][14][15][16][17][18][19]. Algorithm examples for the advanced scheduling methods of multiple numerologies explained in [2,[20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Flexible Multi-Numerology Systems for 5G New Radio

Yazar

Arslan

2018

JMM

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“…That is, the longer the filter impulse response is, the higher the achievable OOB suppression and the higher the robustness to asynchronous transmission result, but also the longer signal in the time domain becomes, which may introduce intersymbol interference (ISI) and latency. Therefore, different filter lengths should be supported to accommodate diverse future requirements [9]. To be able to apply a matched filter at the receiver side, the filter impulse responses of all possible filters either have to be specified leading to a huge look-up table and high complexity or have to be signaled to receiver side leading to a huge signaling overhead.…”

Section: Spectral Confinement Techniques Transparencymentioning

confidence: 99%

Transparent spectral confinement approach for 5G

Bazzi

Kusume

Weitkemper

et al. 2017

2017 European Conference on Networks and Communications (EuCNC)

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This paper proposes a transparent spectral confinement approach for OFDM to enable multiplexing of multiple services with diverse requirements in one system band. Besides mobile broadband services, new service types like machine type and ultra-reliable low latency communications foreseen for future 5G systems set new requirements for the chosen waveform to support asynchronous access and multiplexing different numerologies. That is not best handled by OFDM as it is. Thus, various spectral confinement techniques have been proposed in the literature, which, however, require specific processing at both the transmitter and receiver. This tight link would increase signaling overheads to agree on both sides to apply certain respective processing. The transparent approach proposed in this paper decouples the tight link and thus keeps the system simple and robust. We show by means of numerical evaluations that OFDM with spectral confinement techniques like windowing or filtering at the transmitter, but without respective receiver processing, outperforms the conventional OFDM.

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“…As a direct result, modern studies have shown new candidate waveforms rapidly evolving from the traditional OFDM [7] to several filtered waveforms. For instance, the Filter Bank Multi-Carrier (FBMC) [8], the Universal Filter Multi-Carrier (UFMC) [9], the Filtered OFDM (F-OFDM) [10], and the Generalized Frequency Division Multiplexing (GFDM) [11]. As such, the new generation of mobile can be considered as a "filtration era".…”

Section: Introductionmentioning

confidence: 99%

New Multi-Carrier Candidate Waveform For the 5G Physical Layer of Wireless Mobile Networks

Kadhum

2019

2019 Wireless Days (WD)

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In this paper, a new multi-carrier candidate waveform for the future generation of mobile (5G) is introduced, explored and evaluated. The newly developed design of the Orthogonal Generalized Frequency division multiplexing (OGFDM) can improve the performance in terms of the channel capacity and Bit Error Rate (BER) for the wireless transmission of the multi-carrier system. In addition, compared to the most candidate waveform, Generalized Frequency Division Multiplexing (GFDM), the innovative multi-carrier OGFDM can double, boost and even maximize the capacity of wireless channel at the acceptable level of the BER. This is essentially achieved due to major adaptations have been made on the Filtration level, Oversampling level and Modulation level of the currently recommended GFDM. Thus, depending on the Digital Hilbert Filter (DHF), the presented solution can attain the orthogonality between the un-orthogonal filtered subcarriers of the multicarrier GFDM technique. Moreover, by utilizing an adjustable oversampling factor, the examined system can stay reliable even in the worst conditions of the wireless channel. Furthermore, employing the adaptive bit loading instead of the fixed modulation format, the announced waveform can reach the maximum rate of transmission with the venial limit of error. The main parameters of each promoted level are precisely specified in accordance with the optimum system performance. Besides, the different levels of the multi-carrier OGFDM are presented in the physical layer (PHY) of a wireless electrical back-to-back transceiver system. A MATLAB simulation was introduced to evaluate the system performance (BER & channel capacity) in presence of the Additive White Gaussian Noise (AWGN).

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On Regular Resource Grid for Filtered OFDM

Cited by 26 publications

References 5 publications

Flexible Multi-Numerology Systems for 5G New Radio

Flexible Multi-Numerology Systems for 5G New Radio

Transparent spectral confinement approach for 5G

New Multi-Carrier Candidate Waveform For the 5G Physical Layer of Wireless Mobile Networks

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