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New Signal Design and Processing for Future Vehicular Communications (DRIVE)

Lead Research Organisation: University of Essex
Department Name: Computer Sci and Electronic Engineering

Abstract

Over 1.3 million people die each year because of road traffic crashes, according to the estimate of World Health Organisation. Automation could ultimately provide safer roads and less fatalities, but in order for driverless technology to become mainstream, much needs to change; more efficient communication and networking are essential for fully autonomous driving.

Connected autonomous vehicles building upon advanced intelligent transportation systems are receiving increasing research attention due to their potentials in delivering tremendously improved safety, unprecedented travel experiences, and significantly enhanced traffic efficiency. Central to this vision is a ubiquitous and highly scalable vehicle-to-everything (V2X) communication network in which every vehicle can "talk and listen" to other vehicles, people, and machines, freely and seamlessly. Such a V2X communication network is pivotal for the enabling of a rich variety of vehicular use cases. For instance, remote driving, coordinated driving & route planning, in-car video conferencing/gaming, high-resolution map downloading. By enabling travel in close cooperative formations with one driver controlling multiple vehicles, called 'platooning', the need for drivers would reduce thereby addressing the truck driver shortages in the UK.

The harsh vehicular channels, the varying nature of vehicular networks, and the increasingly stringent quality-of-service requirements that arise under the evolution of the 5G-and-beyond mobile networks, however, call for enhanced signal design and processing algorithms to accommodate a vast range of use cases and communication devices. This project will develop such technology to lay the foundations for the next generation V2X communication systems to deliver safer, faster, greener, and smarter data services.

Innovations will be made by analysing and developing more efficient and reliable vehicular transmission signals as well as their corresponding receiver designs to strike a flexible trade-off in terms of transmission efficiency, communication time lags, reception complexity and robustness. Major advances are expected by our application of the most up-to-date algorithms to improve the intrinsic structural properties of the transmission signals and to enable the full exploitation of the channel variations at the receiver.

By carrying out a practicality-oriented research method, we will analyse and evaluate the combined effects of various hardware imperfections and practical computing/storage constraints in the industry preferred vehicular channel models. In view of the ever-growing densely connected vehicles, we will also determine effective solutions for massive, reliable, and rapid vehicular communications in high mobility channels. Specifically, by working with AccerlerComm and VIAVI Solution (two 5G communications companies), and Conigital (an autonomous vehicle developer), we aim for systematic design guidelines, feasible signal processing algorithms, and concrete implementation approaches for significant breakthroughs that can influence both academia and industry. Moreover, by collaborating with the University of Bergen in Norway, our project could for instance benefit the wider research community with enhanced mathematical problem solving in areas which complement our work.

Overall, the proposed project seeks ground-breaking research outcomes by addressing several fundamental problems in vehicle-centric transmission signal design and receiver processing. These will enable the improvements required for advanced applications to achieve the connected autonomous vehicle aspirations for future transportation systems.

Publications

10 25 50
 
Description The research of DRIVE has been carried out from the following two aspects: 1) Signal design for supporting massive vehicular connectivity with the aid of, for example, code-domain non-orthogonal multiple access (CD-NOMA); 2) Signal processing for enabling reliable vehicular communications especially in high mobility channels.
From the first aspect, we have designed high-performance transmit signals for various wireless systems. For example, novel codebooks have been developed for enhancing the error rate performances of two typical CD-NOMA systems: sparse code multiple access (SCMA) and dense code multiple access (DCMA). New Doppler-resilient sequences have been designed for improved channel estimation in high mobility channels. Additionally, new correlation bound and construction for quasi-complementary sequence sets have been devised to support multicarrier systems with large user capacity.
From the second aspect, we have developed novel signal processing algorithms for multicarrier waveforms that are highly resilient to dynamic environments. This includes affine frequency division multiplexing (AFDM) and orthogonal time frequency space (OTFS) modulations. For example, in our paper "AFDM-SCMA: A Promising Waveform for Massive Connectivity Over High Mobility Channels", we have integrated AFDM and SCMA to support reliable communications for densely connected vehicles. In "Grid Evolution for Doubly Fractional Channel Estimation in OTFS Systems", a novel grid evolution algorithm for doubly fractional channel estimation in OTFS systems is proposed by evolving the initially uniform coarse Delay-Doppler grid into a non-uniform dense grid.
Exploitation Route Our proposed new transmit signals (e.g., codebooks and sequences) may influence the 3GPP or ETSI standardization activities through the strong ongoing collaborations with our telecommunication companies (i.e., VIAVI Solution, AccelerComm). At the same time, the DRIVE team has also been actively exploring patentable results in signal design receiver processing which may be transferred to certain wireless companies in their next generation products.

The outcomes of DRIVE are also likely to influence wireless researchers globally through our publications in IEEE as well as our advertising in various flagship conferences/workshops.
Sectors Digital/Communication/Information Technologies (including Software)

 
Description Invited Talk at the IEEE ANTS'2024, in IIT Guwahati, India. 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Postgraduate students
Results and Impact 17 December 2024, "Code-Domain NOMA for 6G," Prestigious Talk at the IEEE ANTS'2024, in IIT Guwahati, India.

This talk attracted about 50 researchers and engineers across India.

ANTS'2024 was an IEEE conference held in IIT Guwahati.
Year(s) Of Engagement Activity 2024
URL https://ants2024.ieee-ants.org/program/technical-sessions
 
Description Invited talk at the University of East Anglia 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Postgraduate students
Results and Impact 27 September 2024, "Waveform Design for Integrated Sensing and Communications (ISAC)," invited talk at the University of East Anglia, hosted by Dr Taoyang Wu.

This talk attracted over 30 audience from UEA.
Year(s) Of Engagement Activity 2024
 
Description Keynote Speech at the 2024 Future Communications and Networks (FCN'2024), Valletta, Malta 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Postgraduate students
Results and Impact 18 November 2024, "Ambiguity Shaping for 6G Communications and Sensing," Distinguished Speech at the 2024 Future Communications and Networks (FCN'2024), Valletta, Malta.

This talk attracted over 50 audience from across the world.
Year(s) Of Engagement Activity 2024
URL http://www.future-forum.org.cn/en/fcn2024/Technical.html
 
Description Seminar talk "Waveform Design for 6G Communications and Sensing" in IIT Delhi 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Postgraduate students
Results and Impact 13 January 2025, "Waveform Design for 6G Communications and Sensing", invited talk in IIT Delhi, India, hosted by Dr Gourab Ghatak.

This talk attracted about 30 attendees from academia and industry.
Year(s) Of Engagement Activity 2025