Hierarchical Transmission Optimization for Massively Dense Distributed Antenna Systems

Feng, Wei; Ge, Ning; Lü, Jianhua

doi:10.1109/lcomm.2015.2401584

“…In CR networks, the cognitive users (CUs) sense the spectrum all the time for adaptation or for dynamic frequency access to utilize the spectrum without disturbing LUs, which leads to good spectrum utilization [1,2]. Thanks to its advantage the concept of CR can be utilized in collaborative networks which are widely investigated in recent years [3,4] to increase their spectrum efficiency. On the other hand, collaborative networks may provide CR networks with the method of cooperative spectrum sensing, which can boost its performance of detection.…”

Section: Introductionmentioning

confidence: 99%

Cyclostationary feature detection based spectrum sensing algorithm under complicated electromagnetic environment in cognitive radio networks

Yang

¹

,

Li

²

,

Liu

³

et al. 2015

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Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

“…Taking into account availability of CCs, SUs will decide to transmit data on several CCs in parallel. So, SUs carry out cooperative transmissions [8,9] when SA is implemented in CR based HetNets. Due to the features of SA in the CR based HetNets, the resource scheduling schemes in LTE-Advanced become questionable and are not suitable for SA in CR based HetNets.…”

Section: Related Workmentioning

confidence: 99%

“…This leads to the following arrival rate: (9) The service rate, which is the average number of SUs who finish their transmissions during ority metric. The priority metric is calculated by dividing the instantaneous transmission data rate of the current dominant CC by its past throughput over all aggregated CCs (2) where R k,dominant is the instantaneous transmission data rate of the current dominant CC, N is the number of CCs which is used for SA, and is the average delivered throughput for user k from the ith CC in the past.…”

Section: Performance Of Cr-rsmentioning

confidence: 99%

A resource scheduling scheme for spectrum aggregation in cognitive radio based heterogeneous networks

Fu

¹

,

Ma

²

,

Xu

³

2015

China Commun.

3

0

Get access via publisher Add to dashboard Cite

Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

“…On the other hand, the distributed deployment may cause less interference to other cells in comparison with the co-located case [8]. Moreover, the co-channel interference can be efficiently controlled by exploiting the large-scale channel diversity [9]- [13]. Therefore, the distributed deployment is a more effective way to be performed in increasing the sum rate of SUs as well as reducing the co-channel interference to the PUs.…”

Section: Introductionmentioning

confidence: 99%

Coordinated multi-user transmission in distributed antenna-based spectrum-sharing systems

Zhao

¹

,

Feng

²

,

Shi

³

et al. 2015

2015 International Conference on Wireless Communications &Amp; Signal Processing (WCSP)

Self Cite

2

0

Get access via publisher Add to dashboard Cite

Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

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Hierarchical Transmission Optimization for Massively Dense Distributed Antenna Systems

Cited by 28 publications

References 16 publications

Cyclostationary feature detection based spectrum sensing algorithm under complicated electromagnetic environment in cognitive radio networks

Cyclostationary feature detection based spectrum sensing algorithm under complicated electromagnetic environment in cognitive radio networks

A resource scheduling scheme for spectrum aggregation in cognitive radio based heterogeneous networks

Coordinated multi-user transmission in distributed antenna-based spectrum-sharing systems

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