G.fast is a new standard from the International Telecommunication Union, which targets 1 Gb/s over short copper loops using frequencies up to 212 MHz. This technology requires accurate parametric cable models for simulation, design, and performance evaluation tests. Some existing were designed very high speed digital subscriber line spectra, i.e., 30 MHz, adopt assumptions that are violated when frequency range extended frequencies. paper introduces simple causal model able accurately...

Several new architectures are under investigation for cloud radio access networks, assuming distinct splits of functionality among the network elements. Consequently, research on data compression fronthaul is based assumptions that correspond to a wide variety tradeoffs rate, signal distortion, latency, and computational cost. This letter describes method LTE downlink point-to-point linear prediction Huffman coding, which suitable low cost encoding decoding units with stringent restrictions...

The use of vectoring for crosstalk cancellation in the new ITU-T G.fast standard next generation DSL systems becomes essential efficient utilization extended bandwidth (up to 200 MHz). In VDSL2 30 MHz), a zero-forcing-based linear precoder is used downstream which approaches single-line performance. However, at high frequencies, may amplify signal power substantially since channel much stronger than lower frequencies. Performance could be significantly degraded by normalization keep PSD...

This letter presents a fronthaul signal compression scheme based on linear prediction coding adapted to the orthogonal frequency division multiplexing signals. The proposed method is capable of providing fine tuning factor, which an alternative legacy methods that tune factor by changing discrete number bits quantizer, and consequently, are only able do so with coarse resolution.

Future communication networks call for new solutions to support their capacity and delay demands by leveraging potentials of the millimeter wave (mmWave) frequency band. However, beam training procedure in mmWave systems incurs significant overhead as well huge energy consumption. As such, deriving an adaptive control policy is beneficial both delay-sensitive energy-efficient data transmission over networks. To this end, we investigate problem joint communications paper. Specifically,...

The use of a hybrid copper and fiber architecture is attractive in both fixed access mobile backhauling scenarios. This trend led the industry academia to start developing fourth generation broadband system, which aims at achieving bit-rates 1 Gb/s over short loops. In this context, accurate models twisted-pair cables operating relatively high frequencies are key elements. work describes new parametric cable that incorporate four important characteristics: support up 200 MHz, few parameters,...

Radio-over-copper is a niche idea that has potential to become cornerstone in the deployment of dense 5G networks. We address one remaining hurdles and present an architecture for transparent crosstalk mitigation long term evolution (LTE)-over-copper systems. By taking advantage reference symbols downlink LTE signals, we propose two methods estimating copper channel. System performance evaluated using channel measurements error vector magnitude calculations with promising results.

Put together, the edge and fog form a large diverse pool of computing networking resources from different owners that can be leveraged towards low latency applications as well for alleviating high traffic volume in future networks including 5G beyond. This paper sets out framework integration leveraging on ongoing specifications by ETSI MEC ISG OpenFog Consortium. It also presents technological gaps need to addressed before such an integrated solution developed. These noticeably include...

The evolution towards centralized radio access network (C-RAN) for 5G is driven by the need improved performance and reduced total-cost-of-ownership (TCO). In C-RAN, physically separated remote units (RRUs) baseband (BBUs) are connected via fronthaul (FH) links, which capacity constrained. When base-station antennas upgraded to support massive MIMO techniques, an intra PHY split between RRU BBU becomes favorable avoid dramatic rate growth on FH links. this paper, we present a new uplink...

The densification of mobile networks in order to meet increased capacity demands is ongoing, needed and costly. A few papers have been published based on the insight that fixed broadband offer a multitude sites, for instance our homes, potential small cell deployment providing backhaul power without site costs. However, reach economical large-scale benefits, we explore case when radio systems are deployed coexistence with DSL. In this paper, establish feasibility such concept under...

The evolving broadband access systems using copper networks are currently deployed in a frequency band that goes up to 30 MHz, as specified VDSL2. As hybrid fiber-copper architectures become more important the industry and academia, shorter loop lengths (i.e. 250 meters) from last distribution point users enables adopting even higher frequencies achieve very high data rates of 500 Mbps beyond, is case with G.fast standard under development by ITU-T. In this work, time-domain simulator has...

In centralized radio access network (C-RAN) architecture, the baseband unit (BBU) is connected to remote (RRU) via a fronthaul (FH) interface. For massive MIMO systems in 5G era, traditional FH interface (e.g. CPRI) becomes bottleneck since required capacity increases proportional number of antennas. New functional split between RRU and BBU thereby considered where carries out more processing than RF-related operation make traffic only scale based on layers. This paper provides one...

Notably, developing an innovative architectural network paradigm is essential to address the technical challenging of 5G applications' requirements in a unified platform. Forthcoming applications will provide wide range networking, computing and storage capabilities closer end-users. In this context, 5G-PPP Phase two project named "5G-CORAL: A Convergent Virtualized Radio Access Network Living at Edge" aims identifying experimentally validating which are key technology innovations allowing...

Next-generation wireline systems may exploit fre- quencies up to several hundred MHz on short lines. Strong crosstalk coupling, comparable the direct paths, is one of main channel characteristics at high frequencies. Instead fully cancelling all crosstalk, we utilize strong paths boost data-rate for active users. Two linear precoding schemes, based maximum ratio-combining (MRC) and convex optimization, respectively, are proposed applied a common network topology. The schemes constructive...

To increase indoor coverage for mobile services, we propose a residential small cell infrastructure making use of the existing copper plant. The system is cabinet-based, collocated with VDSL2 and uses pieces spectrum next to VDSL2. Inspired by Ericsson Radio Dot System, it challenges femtocell paradigm offering full macro functionality in cells. An interesting service potential offered albeit added traffic capacity moderate as limited fronthaul.

Provisioning of cost-effective Ethernet-based fronthaul by reusing the LAN infrastructure available in most commercial buildings is challenging predominantly terms required bandwidth and synchronization. In contrast to a synchronous fronthaul, PTP-based Ethernet network must cope with estimation noise introduced packet delay variation (PDV) for synchronization recovery. The SYNC used PTP on such networks expected suffer from significant PDV due traffic other background traffic. Further...

Sudden changes of channel coefficients in a wideband vectored wireline system (such as G.fast) due to the terminating impedance lines outside group can seriously degrade stability and throughput. This letter presents model that predicts impact termination mismatch based exclusively on crosstalk data for properly-terminated state. Experimental results confirm tight fit between measurements. The allows analysis performance without dedicated measurements cases.

Emerging wireline transmission systems such as G.fast use bands up to around 200 MHz on short cables. A key enabler for achieving the aspired throughput of several hundred Mbit/s is joint processing transmit signals in downstream direction well receive upstream through techniques referred vectoring. new challenge are sudden and severe changes channel matrix caused by changing terminations lines outside vectoring group. Such events can be users disconnecting their modems, turning them or off,...

Crosstalk cancellation is a crucial issue for traditional digital subscriber line systems. For LTE-over-copper systems, however, the need crosstalk varies depending on analog fronthauling architecture and its parameters. A handler that decoupled as much possible from rest of system thus preferred. Therefore, we propose time-domain precoding scheme specifically in downstream direction to separate unit LTE signal flow, perform an on-demand manner. Estimation all direct paths assisted by...

Due to the much higher crosstalk impairing in G.fast high-frequency channels compared with digital subscriber line low-frequency channels, nonlinear Tomlinson-Harashima precoding (THP) has a good potential enhance system performance. However, ordering plays an important role for data rate performance THP. The users precoded earlier experience enhanced performance, while later are punished lower rates. This would be undesirable from service providers' point of view. In this letter, systemic...

We present a cooperative spatial reuse (CSR) scheme as extension of the current TDMAbased MAC to enable in multi-rate wireless networks.We model cooperation problem on utilizing time slots obtained from TDMA-based MAC.In CSR, there are two operation modes.One is TDMA mode while other which links transmit simultaneously.Links contribute their own form group do reuse.Each link joins only if it can benefit capacity or energy efficiency.Otherwise, will leave and switch back TDMA.In this work, we...

This work investigates a mechanism for alignment of the timing on which spatially distributed and cooperative radio units transmit in radio-frequency (RF) when served over packet-based fronthaul. It analyzes problem by considering imperfect clock synchronization packet delay variation that fronthaul packets are subject to. Following analysis, this paper proposes an implementation architecture RF transmission based synchronized triggering among centralized processing units. Throughout...

The 5G Edge Intelligence for Vertical Experimentation (5G-DIVE) project aims at demonstrating the technical merits and business value proposition of technologies in two vertical pilots, namely Industry 4.0 (I4.0) Autonomous Drones Scout (ADS) pilots. This paper presents an overview overall 5G-DIVE solution reports results initial validation campaign selected use case, featuring connectivity, distributed computing, artificial intelligence. I4.0 provide a baseline next step targeting broader...