Cooperative backhaul aided next-generation digital subscriber loops

Lead Research Organisation: Newcastle University
Department Name: Sch of Engineering

Abstract

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Description Forward error correction and coded modulation are considered for the digital subscriber line. In particular, the user error rate performance of the legacy concatenated Reed Solomon and Trellis Coded Modulation system is compared to that achieved by the binary and non-binary Low-density Parity-check Bit-interleaved Coded Modulation system. The comparisons are made for the system with linear precoding cancellation of far-end crosstalk. Significant improvements are achieved by the modern capacity-approaching codes. The results have been submitted to ITU and are considered for inclusion in the next standard.
Exploitation Route We have been working closely with the project partners of the Celtic Plus project and British Telecommunications (BT) to replace the legacy error correcting codes (ECC) utilized in the standard by state-of-the-art ECC techniques.
Sectors Digital/Communication/Information Technologies (including Software)
URL https://www.celticplus.eu/project-gold/
 
Description We have contribute key findings on the performance of binary and non-binary low-density parity check (LDPC) codes over the copper channel utilizing bandwidth in excess of 500 MHz to the Celtic Plus project. The Celtic Plus project is centered around the G.fast broadband technology and its European deployment and development. The project's goals is to ensure the competitiveness of European telecommunications industry and increase the bandwidth of the European broadband access networks to gigabit rates, thereby laying a foundation for a European boost. For the UK, the Fibre-to-the-distribution point (FTTdp) exploiting G.fast technology could be transformative in provision of ultra-high-speed broadband on a national scale. With bit rates up to 1 Gbit/s the imperative for a pure fibre solution is diminished. Technology that exploits existing network connections to the home, which can be installed by the customers themselves in most cases, coupled with zero touch operations and network management, could change the UK's broadband landscape. The research we conducted in LDPC-coded modulation (LCM) during the project is pioneering and was published in https://ieeexplore.ieee.org/abstract/document/9258897 This research precedes many of the recent developments in the area at the time, as can be seen here https://www.itu.int/md/meetingdoc.asp?lang=en?ent=T17-SG15-C?ion=Q4/15 The pandemic has led to an increased emphasis on remote collaboration, video conferencing, and streaming services, which require higher bandwidth and faster speeds. Copper-based broadband technology are not be able to provide the necessary bandwidth required for these activities, leading to a higher demand for fiber-based broadband. Therefore, the telecoms industry, including British Telecoms, has been actively investing in fiber-based broadband technology due to its long-term benefits and potential for scalability. While copper-based broadband technology has served its purpose well in the past, it may not be able to keep up with the increasing demands of consumers in the future. As a result, many telecom companies have shifted their focus towards fiber-based broadband technology, which offers a more sustainable and future-proof solution. These developments have put the breaks on the uptake of this technology, and although more research outcomes will be published from the project in the future, the impact is expected to be more of academic in nature. Despite this set back, we are currently looking for companies to transfer the findings into products, however, the focus will be now on alternative options such as cellular wireless and underwater acoustic communications to explore the application of LCM in 5G and Beyond systems.
First Year Of Impact 2019
Sector Digital/Communication/Information Technologies (including Software),Electronics
Impact Types Societal,Economic
 
Description Gigabits Over the Legacy Drop 
Organisation BT Group
Country United Kingdom 
Sector Private 
PI Contribution Contribution of performance results and analyses related to the bit error rate performance of state-of-the-art error correction codes (ECC) that are intended to replace the current ECC schemes utilized by the G.fast standard.
Collaborator Contribution British Telecommunication plc, one of the partners, provided measurement results of twisted pair lines of different lengths that are required for the simulation test bench that was implemented to obtain performance results.
Impact Contributions to annual reports.
Start Year 2016