Low ICI Symbol Boundary Alignment for 5G Numerology Design

Arslan, Hüseyin

doi:10.1109/access.2017.2782830

Cited by 17 publications

(18 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…CP implementation techniques have effects on non-orthogonality in multi numerologies [9][10][11]. Individual CP usage for each OFDM symbol is preferred in 3GPP standardization for 5G NR [4].…”

Section: Individual Cp Implementationmentioning

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: Individual Cp Implementationmentioning

confidence: 99%

“…Relationships between multiple numerologies and user/service requirements are provided in [2,7,8] from the numerology selection perspective. 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].…”

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

“…By using common CP: This is another way of achieving synchronization over LCM symbol duration. In this approach, multi symbols encapsulated OFDM (MSE-OFDM) is adopted in N U M 2 , which allows one CP to be used for 2 k OFDM symbols [11], [12]. CP size of N U M 2 , T CP 2 , is then determined from the resultant length of the concatenated 2 k symbols, which makes T CP 2 = 2 k · T CP 2 .…”

Section: Inter Numerology Synchronization and Orthogonalitymentioning

confidence: 99%

“…However, due to the adoption of MSE-OFDM in N U M 2 , an extra FFT and IFFT blocks are required at N U M 2 receiver to facilitate proper equalization and data detection as discussed in [11] and [12]. At the receivers, user of each numerology concentrates on capturing and decoding its own symbols from the composite signal depending on its numerology specification ( Fig.…”

Section: Inter Numerology Synchronization and Orthogonalitymentioning

confidence: 99%

Inter-Numerology Interference Analysis for 5G and Beyond

Kihero

Solaija

Yazar

et al. 2018

2018 IEEE Globecom Workshops (GC Wkshps)

Self Cite

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

“…OFDM is the current state‐of‐the art technique underlying most of wireless communication systems. To name a few, fourth generation (4G), fifth generation (5G), 1 and Digital Video Broadcast (DVB‐T1/2) 2 . The main drawback of OFDM systems is high peak‐to‐average power ratio (PAPR) which causes severe nonlinear distortion (NLD) at the output of the power amplifiers and digital to analog converters (DACs) in the RF processing chain 3 .…”

Section: Introductionmentioning

confidence: 99%

A low complex peak‐to‐average power ratio reduction in orthogonal frequency division multiplexing systems using a two‐dimensional interleaving strategy

Aghdam

Deiri

Tazehkand

et al. 2020

Int J Communication

View full text Add to dashboard Cite

Summary One of the effective peak‐to‐average power ratio (PAPR) reduction methods in orthogonal frequency division multiplexing (OFDM) systems is the partial transmit sequence (PTS) method in which the input data stream is divided into disjoint subblocks and the subcarriers in each subblock multiplied by predefined phase factors. Consecutive data symbols corresponding to a source/user are often more correlated, so when the corresponding subcarriers are weighted by the same phase factor, a sufficient reduction in PAPR cannot be attained by the PTS algorithm in common subblocks. To solve this problem, in this paper, we propose a new systematic PAPR reduction method based on a two‐dimensional subcarrier mapping. Specifically, we scramble/interleave each OFDM symbol based on T‐transform to obtain a new set of subblocks which will be multiplied by predefined phase factors. In the proposed method, each one‐dimensional symbol sequence is converted to a two‐dimensional matrix, and the partitions are formed starting from the main diagonal diameters in the matrix. We present the permutation matrix and reformulate the T‐transform technique based on the permutation matrix. Through numerical experimentations, it is shown that the proposed PAPR reduction technique outperforms the previous counterparts. Also, we analyzed our proposed results by aperiodic autocorrelation function (ACF); reducing of ACF side lobes shows that our proposed method cause considerable PAPR parameter reduction respected to other methods.

show abstract

Low ICI Symbol Boundary Alignment for 5G Numerology Design

Cited by 17 publications

References 25 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

A low complex peak‐to‐average power ratio reduction in orthogonal frequency division multiplexing systems using a two‐dimensional interleaving strategy

Contact Info

Product

Resources

About