School of Mechanical, Electrical and Manufacturing Engineering


Circuit Board for communications research

Unlocking Potentials of MIMO Full-duplex Radios for Heterogeneous Networks (UPFRONT)

This project aims to dramatically increase the capacity of future wireless communications networks beyond 5G.

Our Aim

Impacting individuals and organisations internationally, UPRONT's cutting-edge research looks to develop multi-antenna full-duplex technology, allowing wireless terminals to transmit and receive signals simultaneously on the same frequency band, to achieve highly efficient spectrum usage in heterogeneous networks (HetNets). HetNets are seen as an essential wireless technology in the development of 5G, enabling systems to meet the demand of increased volume of data traffic and device connectivity. Full duplex technology opens up unique opportunities for HetNets that never appeared before including; extra half bandwidth; to potentially double network capacity; control channels, for real-time channel estimation and tracking, power control and beamforming, informed scheduling and other advanced techniques; and instant observation of radio environment, allowing sophisticated resource allocation techniques to be applied while avoiding feedback.

Full-duplex technology is much more than just doubling the capacity of existing wireless communications networks but making impossible communication technologies possible. The vision is that full-duplex HetNets will become the dominant solution for future-generation wireless communications beyond 5G. Full-duplex technology is also being considered as a key enabler for the next generation Wi-Fi standard IEEE 802.11 be capable of supporting a maximum throughput of at least 30 Gbps.

Our Research

This project investigates the self-interference mitigation techniques of full duplex communications, identifying the challenges it poses while also examining its end-to-end benefits. It explores the new wideband MIMO antenna design, leveraging its powerful signal processing to handle the chaotic interference while addressing the network-wide challenges associated with adoption of full-duplex small cells.

Our Outcomes

UPFRONT is an ongoing project. We have designed coaxially fed orthogonally polarized broadband dual rectangular spiral antenna configurations for in-band full duplex communications, achieving a very high isolation of 45 dB. We have proposed a theoretical framework for the study of massive multiple-input multiple-output (MIMO) enabled full-duplex cellular networks in the presence of residual self-interference channels. These results indicate that significant spectral efficiency gains can be achieved through full duplex compared to half duplex operations. 

A list of relevant publications can be downloaded from the Loughborough University repository.

Dr Gan Zheng - Reader in Signal Processing for Wireless Communications

Reader in Signal Processing for Wireless Communications, Dr Gan Zheng has published four book chapters, more than 130 papers with 5000+ citations and has a h-index of 33.

Dr Gan Zheng - Reader in Signal Processing for Wireless Communications

Athena Swan Bronze award

Contact us

The Wolfson School of Mechanical, Electrical and Manufacturing Engineering
Loughborough University
LE11 3TU