On the performance of active analog self-interference cancellation techniques for beyond 5G systems

Luo, Haifeng; Holm, Mark; Ratnarajah, Tharmalingam

doi:10.23919/jcc.2021.10.011

Cited by 15 publications

(12 citation statements)

References 5 publications

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“…e unparalleled advantages of NOMA and the multi-layered architecture of HetNets have the potential to significantly improve the performance of cellular networks. Inspired by this possibility, a new resource optimization scheme is presented for efficient cellular device association and optimal power control in NOMA-enabled HetNet, so a joint solution is difficult to obtain [5]. e Internet of ings (IoT) technology permeates diverse application areas, relying on sensing and actuating devices that share, process, and present meaningful real-world information.…”

Section: Introductionmentioning

confidence: 99%

Application Exploration of Scenario Logistics Ecosystem Based on beyond 5G and IoT Architecture

Yao

2022

Security and Communication Networks

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With the continuous expansion of my country's logistics market, the business scale and management scale of logistics enterprises are increasing day by day. Smart logistics enterprises realize the “three streams in one” of the logistics industry through informatization and intelligent management, which greatly improves the service efficiency and quality of logistics enterprises. However, there are still many problems in this intelligent logistics mode. In this context, we conduct research experiments on the logistics ecosystem of IoT architecture scenarios and draw conclusions through experiments: (1) logistics development in IoT building scenarios. The environment includes natural environment, economic environment, political environment, etc. The economic environment plays an important role in driving logistics demand and promoting logistics growth. The political environment helps to improve the logistics infrastructure and ensure the healthy development of logistics. (2) The most important cost of the logistics industry is that transportation costs account for 67% of the entire logistics cost, followed by cargo storage accounting for 16% of the cost, and smart express cabinets accounting for 13% of the cost. From this, we can see the highest cost out of the logistics system under the Internet of Things is the transportation cost. As a unity is closely linked to the economy and interdependent, logistics is the driving force to promote the development of economic integration. In order to ensure the sustainable development of the economy, it is necessary to continuously improve the service level of logistics, reduce logistics costs, improve operation efficiency, strengthen the linkage development with other industries, and enhance the competitiveness of logistics. We launched an investigation against this background and researched the logistics system under the scenario logistics ecosystem of beyond 5G and IoT architecture.

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Section: Introductionmentioning

confidence: 99%

Application Exploration of Scenario Logistics Ecosystem Based on beyond 5G and IoT Architecture

Yao

2022

Security and Communication Networks

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“…However, in particular for the sensing, the difference between the received power of the coupling or of intended communications on the one hand and the reflected signals from the targets on the other hand is extremely high due to the attenuation in the radar channel which is inversely proportional to R 4 . And since the available dynamic range is mostly limited on the upper end by the TX-RX coupling and at the lower end by the quantization noise of the ADCs [105], weak targets could fall below the quantization noise level due to the limited bit resolution of the ADCs. An example for such weak targets that are of interest are drones as mentioned in Section II-A3.…”

Section: ) Analog Self-interference Cancellationmentioning

confidence: 99%

Joint Radar and Communications: Architectures, Use Cases, Aspects of Radio Access, Signal Processing, and Hardware

Shatov,

Nuss,

Schieler

et al. 2024

IEEE Access

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Integrated Radar and Communications (JRC) can satisfy the apparent demand for applications based on object detection, tracking, ranging, and positioning. JRC is, therefore, often seen as candidate technology for 6G mobile systems. Implementing JRC will require novel approaches in many research and engineering fields, including protocol design, digital and analog signal processing, and hardware development. The ongoing debates on JRC already include many white papers and research articles ranging in content from very specific technical problems to comprehensive bird's eye-level reviews. This paper represents the work within the Open6GHub research project in Germany, which aims to investigate and implement potential end-to-end solutions for 6G. In this framework, we propose a consolidated vision for potential JRC architectural approaches. The subsequent discussion on integrating radar sensing with communications highlights this technology's state-of-the-art and presents relevant opportunities and challenges.INDEX TERMS 6G, joint communications and sensing (JCAS), joint radar and communications (JRC), integrated sensing and communications (ISAC), radar-communications (RadCom), radio access network (RAN) architecture.

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“…In addition, in the FR2 band, traditional microstrip-based canceler cannot achieve satisfactory performance due to the insertion loss increasing as the number of taps increases. Fortunately, in our recent works [7]- [9], we establish analog canceler between each RF chain pair as well as apply optical domain SIC, which can provide about 25 dB cancellation with 100 taps under 400 MHz bandwidth. Assuming that the RSI factor η is introduced to scale the amount of SIC done by the first two stages; therefore, we have the RSI as…”

Section: B Self-interferencementioning

confidence: 99%

“…However, to ensure the benefits of IBFD transmission, the self-interference (SI), which is more than 100 dB higher than the desired signal [5], needs to be canceled efficiently. Recently, SI cancellation (SIC) techniques in the propagation [6], analog [7], [8], and digital domains [9] have been investigated. Moreover, the results in our recent work [9] show satisfactory performance on SIC with the combination of those three SIC techniques.…”

Section: Introductionmentioning

confidence: 99%

In-Band-Full-Duplex Integrated Sensing and Communications for IAB Networks

Zhang

Garg

Ratnarajah

2022

IEEE Trans. Veh. Technol.

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In this paper, we develop an in-band-fullduplex (IBFD)-integrated sensing and communications (ISAC)integrated access and backhaul (IAB) network operating at frequency range 2 (FR2) for vehicle-to-everything (V2X) communications, where the IAB-node acts as a roadside unit (RSU) performing sensing and communication simultaneously (i.e., at the same time and frequency band). Self-interference (SI) due to the IBFD operation can be canceled in the propagation, analog, and digital domains; only the residual SI (RSI) is reserved for performance analysis. Unscented Kalman filter (UKF) is used for tracking multiple vehicles in the studied scenario. Considering the subarray-based hybrid beamforming structure, including hardware impairments (HWI) and RF effective SI channel estimation error, with sufficient SI cancellation, simulations show that the UKF can give satisfactory radar tracking accuracy. The resulting tracking mean-squared errors averaged across all vehicles of each state parameter are close to their posterior Cramér-Rao lower bounds. Compared with half-duplex-ISAC-IAB networks, IBFD-ISAC-IAB networks nearly double the spectral efficiency for both the backhaul and access links. Moreover, the less the RF effective SI channel estimation error is, the higher the backhaul link spectral efficiency is.

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On the performance of active analog self-interference cancellation techniques for beyond 5G systems

Cited by 15 publications

References 5 publications

Application Exploration of Scenario Logistics Ecosystem Based on beyond 5G and IoT Architecture

Application Exploration of Scenario Logistics Ecosystem Based on beyond 5G and IoT Architecture

Joint Radar and Communications: Architectures, Use Cases, Aspects of Radio Access, Signal Processing, and Hardware

In-Band-Full-Duplex Integrated Sensing and Communications for IAB Networks

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