The FUTON Prototype: Proof of Concept for Coordinated Multi-Point in Conjunction with a Novel Integrated Wireless/Optical Architecture

Diehm, Fabian; Marsch, Patrick; Fettweis, Gerhard

doi:10.1109/wcncw.2010.5487648

Cited by 19 publications

(7 citation statements)

References 5 publications

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“…In the CAS, N t antennas are centralized in the center base station, whereas they are distributed to several RAUs in the DAS. Note that the RAUs are connected to the central unit by high-speed fronthaul such as optic fibers [16] and thus function as a single system. Here, we assume the ideal case where delay in fronthaul can be ignored † .…”

Section: Channel Modelmentioning

confidence: 99%

A Throughput Evaluation of an Over-Distributed Antenna System with Limited Pilot Resources

Nakanishi¹,

Nishimura²,

Ohgane³

et al. 2015

IEICE Trans. Commun.

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SUMMARY A distributed antenna system, where the antennas of a base station are spatially distributed throughout the cell, can achieve better throughput at the cell edge than a centralized antenna system. On the other hand, the peak throughput degrades in general because each remote antenna unit has only a few antennas. To achieve both high peak and cell-edge throughputs, we need to increase the total number of antennas. However, this is not easy due to the pilot resource limitation when we use frequency division duplexing. In this paper, we propose using more antennas than pilot resources. The number mismatch between antennas and signals is solved by using a connection matrix. Here, we test two types of connection matrix: signal-distributing and signal-switching. Simulation results show that the sum throughput is improved by increasing the number of antenna elements per remote antenna unit under a constraint on the same number of pilot resources.

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Section: Channel Modelmentioning

confidence: 99%

A Throughput Evaluation of an Over-Distributed Antenna System with Limited Pilot Resources

Nakanishi¹,

Nishimura²,

Ohgane³

et al. 2015

IEICE Trans. Commun.

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“…The network operator chooses a subset of M antennas to transmit data to K ≤ M ≤ M max single-antenna users. The area covered by the M antennas is a supercell [10]. We assume SDMA, so that the K users access the whole bandwidth at the same time.…”

Section: A Channel Modelmentioning

confidence: 99%

Cloud-RAN platform for LSA in 5G networks — Tradeoff within the infrastructure

Gómez-Miguélez

Avdic

Marchetti

et al. 2014

2014 6th International Symposium on Communications, Control and Signal Processing (ISCCSP)

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The focus of this paper is to provide a unique perspective on new network architectures supporting novel spectrum sharing mechanisms. A Cloud-based MD-MIMO RAN (Massive Distributed Multiple-Input Multiple-Output Radio Access Network) is proposed for exploitation of Licensed Shared Access (LSA) spectrum sharing concept. In order to deliver a particular service, the virtual network operator leases spectrum and antennas from the LSA spectrum pool and the Cloud-RAN platform following the pay-per-use model. The spectrum is turned into a consumable resource along with the infrastructure resources and there is a tradeoff in the system between using more antennas or more bandwidth. In this paper we propose a physical platform that can consume these resources dynamically.

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“…However, in practical cellular scenarios, issues such as the complexity of joint signal processing of all the BSs, the difficulty in acquiring full CSI from all UTs at each BS, and synchronization requirements will make global coordination difficult. Therefore, we assume a clustered multicell cellular system as shown in Figure 1, where the base stations are linked to a CU (e.g., by optical fiber) as proposed in [7,8]. In such architecture the area covered by the set of cooperating BSs is termed as supercell.…”

Section: System Modelmentioning

confidence: 99%

“…Such systems have the advantage of macro-diversity that is inherent to the widely spaced antennas and more flexibility to deal with intercell interference, which fundamentally limits the performance of user terminals (UTs) at cell edges [5,6]. An enhanced cellular architecture is being proposed and implemented, under the European FUTON project [7,8].…”

Section: Introductionmentioning

confidence: 99%

Power allocation strategies for distributed precoded multicell based systems

Silva

Holakouei

Gameiro

2011

J Wireless Com Network

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Multicell cooperation is a promising solution for cellular wireless systems to mitigate intercell interference, improve system fairness, and increase capacity. In this article, we propose power allocation techniques for the downlink of distributed, precoded, multicell cellular-based systems. The precoder is designed in two phases: first the intercell interference is removed by applying a set of distributed precoding vectors; then the system is further optimized through power allocation. Three centralized power allocation algorithms with per-BS power constraint and different complexity trade-offs are proposed: one optimal in terms of minimization of the instantaneous average bit error rate (BER), and two suboptimal. In this latter approach, the powers are computed in two phases. First, the powers are derived under total power constraint (TPC) and two criterions are considered, namely, minimization of the instantaneous average BER and minimization of the sum of inverse of signal-to-noise ratio. Then, the final powers are computed to satisfy the individual per-BS power constraint. The performance of the proposed schemes is evaluated, considering typical pedestrian scenarios based on LTE specifications. The numerical results show that the proposed suboptimal schemes achieve a performance very close to the optimal but with lower computational complexity. Moreover, the performance of the proposed per-BS precoding schemes is close to the one obtained considering TPC over a supercell.

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The FUTON Prototype: Proof of Concept for Coordinated Multi-Point in Conjunction with a Novel Integrated Wireless/Optical Architecture

Cited by 19 publications

References 5 publications

A Throughput Evaluation of an Over-Distributed Antenna System with Limited Pilot Resources

A Throughput Evaluation of an Over-Distributed Antenna System with Limited Pilot Resources

Cloud-RAN platform for LSA in 5G networks — Tradeoff within the infrastructure

Power allocation strategies for distributed precoded multicell based systems

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The FUTON Prototype: Proof of Concept for Coordinated Multi-Point in Conjunction with a Novel Integrated Wireless/Optical Architecture

Cited by 19 publications

References 5 publications

A Throughput Evaluation of an Over-Distributed Antenna System with Limited Pilot Resources

A Throughput Evaluation of an Over-Distributed Antenna System with Limited Pilot Resources

Cloud-RAN platform for LSA in 5G networks &#x2014; Tradeoff within the infrastructure

Power allocation strategies for distributed precoded multicell based systems

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Product

Resources

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Cloud-RAN platform for LSA in 5G networks — Tradeoff within the infrastructure