Multi-User Aware Frame Structure for OFDMA Based System

Şahin, Alphan; Arslan, Hüseyin

doi:10.1109/vtcfall.2012.6399155

Cited by 16 publications

(12 citation statements)

References 18 publications

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“…Substitute (3) and (1) into (4) and assume that the transmitter window and the receiver window satisfy conditions (6) and (7), we havê…”

Section: Appendix a Derivation Of (9)mentioning

confidence: 99%

“…Therefore, mixed numerologies are proposed for the new radio air interface to optimize the individual service, which can be supported by the time domain multiplexing or frequency domain multiplexing. For the conventional orthogonal frequency division multiplexing (OFDM) which is well-localized in time domain, aligning different numerologies in time domain can maintain the orthogonality between the consecutive blocks [6]. However, multiplexing services in frequency domain have better forward compatibility and inclusive support for different latency services compared with the time domain multiplexing counterpart [5].…”

Section: Introductionmentioning

confidence: 99%

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Mixed Numerologies Interference Analysis and Inter-Numerology Interference Cancellation for Windowed OFDM Systems

Zhang

Xiao

et al. 2018

IEEE Trans. Veh. Technol.

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“…Substitute (3) and (1) into (4) and assume that the transmitter window and the receiver window satisfy conditions (6) and (7), we havê…”

Section: Appendix a Derivation Of (9)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mixed Numerologies Interference Analysis and Inter-Numerology Interference Cancellation for Windowed OFDM Systems

Zhang

Xiao

et al. 2018

IEEE Trans. Veh. Technol.

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“…Different numerologies are multiplexed orthogonally in time domain in [5]. It is one of the first studies that incorporated multi-numerology or mixed-numerology systems and designed a framework that provides numerous services simultaneously in a unified frame.…”

Section: Introductionmentioning

confidence: 99%

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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“…To deal with the lattice and pulse design in a scheme, while one might consider the worst case scenario to optimize pulse and lattice, other might include multiple lattices and filter structures within the frame. In [103], unlike the conventional orthogonal frequency division multiple accessing (OFDMA) transmission frame structures that consider the worst case communication channel, multiple CP and subcarrier spacings are employed by taking the statistics of the mobility and the range of the users into account. As a result, better frequency spread immunity and higher bandwidth efficiency are obtained.…”

Section: A Lattice and Filter Adaptationsmentioning

confidence: 99%

A Survey on Multicarrier Communications: Prototype Filters, Lattice Structures, and Implementation Aspects

Şahin

Güvenç

Arslan

2014

IEEE Commun. Surv. Tutorials

Self Cite

339

200

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Abstract-Due to their numerous advantages, communications over multicarrier schemes constitute an appealing approach for broadband wireless systems. Especially, the strong penetration of orthogonal frequency division multiplexing (OFDM) into the communications standards has triggered heavy investigation on multicarrier systems, leading to re-consideration of different approaches as an alternative to OFDM. The goal of the present survey is not only to provide a unified review of waveform design options for multicarrier schemes, but also to pave the way for the evolution of the multicarrier schemes from the current state of the art to future technologies. In particular, a generalized framework on multicarrier schemes is presented, based on what to transmit, i.e., symbols, how to transmit, i.e., filters, and where/when to transmit, i.e., lattice. Capitalizing on this framework, different variations of orthogonal, bi-orthogonal, and nonorthogonal multicarrier schemes are discussed. In addition, filter design for various multicarrier systems is reviewed considering four different design perspectives: energy concentration, rapid decay, spectrum nulling, and channel/hardware characteristics. Subsequently, evaluation tools which may be used to compare different filters in multicarrier schemes are studied. Finally, multicarrier schemes are evaluated from the view of the practical implementation issues, such as lattice adaptation, equalization, synchronization, multiple antennas, and hardware impairments.

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Multi-User Aware Frame Structure for OFDMA Based System

Cited by 16 publications

References 18 publications

Mixed Numerologies Interference Analysis and Inter-Numerology Interference Cancellation for Windowed OFDM Systems

Mixed Numerologies Interference Analysis and Inter-Numerology Interference Cancellation for Windowed OFDM Systems

Flexible Multi-Numerology Systems for 5G New Radio

A Survey on Multicarrier Communications: Prototype Filters, Lattice Structures, and Implementation Aspects

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