Impact of Imperfect Channel State Information on Quasi-Decentralized Cooperative Inter-Cell Interference Cancellation with Fractional Frequency Reuse

Maruta, Kazuki; Ohta, Akio; Iwakuma, Masataka; Sugiyama, Takatoshi

doi:10.1541/ieejeiss.135.1169

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…The ICLI cancellation so far necessitates the condition where the original desired signal strength must be larger than interference due to its simplified nature, otherwise the ICLI power is conversely emphasized. Our previous study was based on the strict frequency reuse [ 15 , 16 ] or fractional frequency reuse (FFR) [ 17 , 18 ] constraint to satisfy the above requirement in compensation for bandwidth division loss. To address this issue, this paper proposes to introduce dynamic clustering [ 19 ] and coordinated user scheduling which can leverage ICLI cancellation capability without any frequency reuse.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Clustering and Coordinated User Scheduling for Cooperative Interference Cancellation on Ultra-High Density Distributed Antenna Systems

Maruta

2018

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This paper proposes dynamic clustering and user scheduling for previously conceived inter-cluster interference cancellation scheme on ultra-high density distributed antenna system (UHD-DAS). UHD-DAS is composed of one central unit (CU) and densely deployed remote radio units (RUs) serving as small cell access points. It can enhance spatial spectral efficiency by alleviating traffic load imposed per radio unit; however, intenser small cell deployment revives the inter-cell interference (ICI) problem. Cell clustering, cooperation of multiple RUs, can mitigate ICI partially, whereas inter-cluster interference (ICLI) still limits its possible capacity. Simplified ICLI cancellation based on localized RU cooperation was previously proposed to mitigate interference globally. The resolved issue is that it required frequency reuse distance to fully obtain its interference cancellation ability. This paper introduces dynamic clustering with coordinated user scheduling to ensure reuse distance without extra frequency reuse. Joint dynamic clustering and ICLI cancellation can effectively work and almost reaches ideal performance as full cooperative spatial multiplexing transmission.

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Section: Introductionmentioning

confidence: 99%

Dynamic Clustering and Coordinated User Scheduling for Cooperative Interference Cancellation on Ultra-High Density Distributed Antenna Systems

Maruta

2018

Entropy

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Imperfect CSI Muting With Time-Domain Thresholding for Cooperative Intercell Interference Cancellation

Maruta¹

2022

IEEE Systems Journal

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Uplink Interference Suppression by Semi-Blind Adaptive Array With Decision Feedback Channel Estimation on Multicell Massive MIMO Systems

Maruta

Ahn

2018

IEEE Trans. Commun.

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Impact of Imperfect Channel State Information on Quasi-Decentralized Cooperative Inter-Cell Interference Cancellation with Fractional Frequency Reuse

Cited by 3 publications

References 16 publications

Dynamic Clustering and Coordinated User Scheduling for Cooperative Interference Cancellation on Ultra-High Density Distributed Antenna Systems

Dynamic Clustering and Coordinated User Scheduling for Cooperative Interference Cancellation on Ultra-High Density Distributed Antenna Systems

Imperfect CSI Muting With Time-Domain Thresholding for Cooperative Intercell Interference Cancellation

Uplink Interference Suppression by Semi-Blind Adaptive Array With Decision Feedback Channel Estimation on Multicell Massive MIMO Systems

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