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

Zhang, Xiaoying; Zhang, Lei; Xiao, Pei; Ma, Dongtang; Wei, Jibo; Yu, Xin

doi:10.1109/tvt.2018.2826047

Cited by 95 publications

(73 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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. Multiple numerologies are multiplexed in both time and frequency domains with 5G NR [6].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Flexible Multi-Numerology Systems for 5G New Radio

Yazar

Arslan

2018

JMM

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Non-orthogonality of multi numerologies are investigated in [9][10][11][12]. 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].…”

Section: Introductionmentioning

confidence: 99%

Flexible Multi-Numerology Systems for 5G New Radio

Yazar

Arslan

2018

JMM

View full text Add to dashboard Cite

show abstract

“…Interference in multi-numerology systems, also called internumerology interference (INI) has garnered increasingly more attention in recent times. An INI model is presented in [6] which describes INI as a function of frequency response of the This work has been submitted to the IEEE for possible publication. Copyright may be transferred without notice, after which this version may no longer be accessible.…”

Section: Introductionmentioning

confidence: 99%

Inter-Numerology Interference Analysis for 5G and Beyond

Kihero

Solaija

Yazar

et al. 2018

2018 IEEE Globecom Workshops (GC Wkshps)

View full text Add to dashboard Cite

One of the defining characteristics of 5G is the flexibility it offers for supporting different services and communication scenarios. For this purpose, usage of multiple numerologies has been proposed by the 3rd Generation Partnership Project (3GPP). The flexibility provided by multi-numerology system comes at the cost of additional interference, known as inter-numerology interference (INI). This paper comprehensively explains the primary cause of INI, and then identifies and describes the factors affecting the amount of INI experienced by each numerology in the system. These factors include subcarrier spacing, number of used subcarriers, power offset, windowing operations and guard bands.Index Terms-5G New Radio, inter-numerology interference, multi-numerology systems.

show abstract

“…ISI due to the previous OFDM symbol transmitted by the desired user may also exist, however it is omitted as the system is modeled for a single OFDM symbol for the sake of clarity. Interested readers may see the detailed multi-symbol system models provided in[3],[15].…”

mentioning

confidence: 99%

Non-Redundant OFDM Receiver Windowing for 5G Frames and Beyond

Pekoz

Ankarali

Köse

et al. 2020

IEEE Trans. Veh. Technol.

View full text Add to dashboard Cite

Contemporary receiver windowed-orthogonal frequency division multiplexing (RW-OFDM) algorithms have limited adjacent channel interference (ACI) rejection capability under high delay spread and small fast Fourier transformation (FFT) sizes. Cyclic prefix (CP) is designed to be longer than the maximum excess delay (MED) of the channel to accommodate such algorithms in current standards. The robustness of these algorithms can only be improved against these conditions by adopting additional extensions in a new backward incompatible standard. Such extensions would deteriorate the performance of high mobility vehicular communication systems in particular. In this paper, we present a low-complexity Hann RW-OFDM scheme that provides resistance against ACI without requiring any intersymbol interference (ISI)-free redundancies. While this scheme is backward compatible with current and legacy standards and requires no changes to the conventionally transmitted signals, it also paves the way towards future spectrotemporally localized and efficient schemes suitable for higher mobility vehicular communications. A Hann window effectively rejects unstructured ACI at the expense of structured and limited inter-carrier interference (ICI) across data carriers. A simple maximum ratio combining (MRC)-successive interference cancellation (SIC) receiver is therefore proposed to resolve this induced ICI and receive symbols transmitted by standard transmitters currently in use. The computational complexity of the proposed scheme is comparable to that of contemporary RW-OFDM algorithms, while ACI rejection and bit-error rate (BER) performance is superior in both long and short delay spreads. Channel estimation using Hann RW-OFDM symbols is also discussed.

show abstract

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

Cited by 95 publications

References 23 publications

Flexible Multi-Numerology Systems for 5G New Radio

Flexible Multi-Numerology Systems for 5G New Radio

Inter-Numerology Interference Analysis for 5G and Beyond

Non-Redundant OFDM Receiver Windowing for 5G Frames and Beyond

Contact Info

Product

Resources

About