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Recently, cellular Ambient Backscattering has been proposed for cellular networks. Up to now an Ambient backscatter device, called zero-energy device or tag, broadcasted its message by backscattering ambient downlink waves from the closest…

Information Theory · Computer Science 2025-04-11 Ahmed ElSanhoury , Islam Galal , Khaled AlKady , Aml ElKhodary , Dinh-Thuy Phan-Huy , Ayman M. Hassan

Supply chain management is aimed to keep going long-term performance of the supply chain and minimize the costs. Backscatter technology provides a more efficient way of being able to identify items and real-time monitoring. Among the…

Networking and Internet Architecture · Computer Science 2025-06-21 Yun-Hao Liu , Tao Liu , Yimeng Huang , Han Ding , Wei Xi , Wei Gong

We consider multiple access with re-transmission diversity (RTxD) based on a hybrid automatic request (HARQ) protocol with incremental redundancy (IR) in this paper. In order to mitigate multiple access interference (MAI), we employ…

Information Theory · Computer Science 2020-10-14 Jinho Choi

We consider a Gaussian multiple-access channel (MAC) with an amplify-and-forward (AF) relay, where all nodes except the receiver have multiple antennas and the direct links between transmitters and receivers are neglected. Thus, spatial…

Information Theory · Computer Science 2015-03-20 Frederic Knabe , Omar Mohamed , Carolin Huppert

In ambient re-scatter communications, devices convey information by modulating and re-scattering the radio frequency signals impinging on their antennas. In this correspondence, we consider a system consisting of a legacy modulated…

Information Theory · Computer Science 2017-06-13 Ruifeng Duan , Riku Jäntti , Hüseyin Yiğitler , Kalle Ruttik

Ambient backscatter communication is a newly emerged paradigm, which utilizes the ambient radio frequency (RF) signal as the carrier to reduce the system battery requirement, and is regarded as a promising solution for enabling large scale…

Signal Processing · Electrical Eng. & Systems 2018-04-11 Qin Tao , Caijun Zhong , Hai Lin , Zhaoyang Zhang

We consider a multi-link diffusion-based molecular communication (MC) system where multiple spatially distributed transmitter (TX)-receiver (RX) pairs establish point-to-point communication links employing the same type of signaling…

Information Theory · Computer Science 2023-09-29 Lukas Brand , Sebastian Lotter , Vahid Jamali , Robert Schober , Maximilian Schäfer

In this paper, the multiple access channel (MAC) with channel state is analyzed in a scenario where a) the channel state is known non-causally to the transmitters and b) there is perfect causal feedback from the receiver to the…

Information Theory · Computer Science 2007-07-13 Wei Wu , Sriram Vishwanath , Ari Arapostathis

A memoryless state-dependent multiple access channel (MAC) is considered where two transmitters wish to convey a respective message to a receiver while simultaneously estimating the respective channel state via generalized feedback. The…

Information Theory · Computer Science 2019-02-12 Mari Kobayashi , Hassan Hamad , Gerhard Kramer , Giuseppe Caire

This paper addresses the problem of distributed state estimation via multiple access channels (MACs). We consider a scenario where two encoders are simultaneously communicating their measurements through a noisy channel. Firstly, the…

Systems and Control · Electrical Eng. & Systems 2022-12-23 Ghassen Zafzouf , Girish N. Nair , Farhad Farokhi

A memoryless state-dependent multiple-access channel (MAC) is considered, where two transmitters wish to convey their messages to a single receiver while simultaneously sensing (estimating) the respective states via generalized feedbacks.…

Information Theory · Computer Science 2022-04-01 Mehrasa Ahmadipour , Michele Wigger , Mari Kobayashi

Backscatter communication offers a promising solution to connect massive Internet-of-Things (IoT) devices with low cost and high energy efficiency. Nevertheless, its inherently passive nature limits transmission reliability, thereby…

Information Theory · Computer Science 2024-08-19 Hao Chen , Zhizhi Huang , Ying-Chang Liang , Robert Schober

A multi-user cognitive (secondary) radio system is considered, where the spatial multiplexing mode of operation is implemented amongst the nodes, under the presence of multiple primary transmissions. The secondary receiver carries out…

Information Theory · Computer Science 2016-09-27 Nikolaos I. Miridakis , Theodoros A. Tsiftsis , George C. Alexandropoulos , Merouane Debbah

Ambient backscatter communication system is an emerging and promising low-energy technology for Internet of Things. In such system, a device named tag, sends a binary message to a reader by backscattering a radio frequency signal generated…

Signal Processing · Electrical Eng. & Systems 2021-11-04 Romain Fara , Dinh-Thuy Phan-Huy , Abdelwaheb Ourir , Marco Di Renzo , Julien de Rosny

Continued progress towards energy-neutral Internet of Things (IoT) nodes expose the wireless communication link as the dominant energy bottleneck. While low-power wide-area network (LPWAN) technologies achieve long-range communication with…

Signal Processing · Electrical Eng. & Systems 2026-05-13 Tijl Schepens , Gilles Callebaut , Liesbet Van der Perre

Opportunity detection at secondary transmitters (TXs) is a key technique enabling cognitive radio (CR) networks. Such detection however cannot guarantee reliable communication at secondary receivers (RXs), especially when their association…

Information Theory · Computer Science 2017-02-14 Jeemin Kim , Seung-Woo Ko , Han Cha , Seong-Lyun Kim

We consider a multiuser diffusion-based molecular communication (MC) system where multiple spatially distributed transmitter (TX)-receiver (RX) pairs establish point-to-point communication links employing the same type of signaling…

Information Theory · Computer Science 2021-05-05 Lukas Brand , Sebastian Lotter , Vahid Jamali , Robert Schober

Ambient backscatter communication (AmBC) enables a passive backscatter device to transmit information to a reader using ambient RF signals, and has emerged as a promising solution to green Internet-of-Things (IoT). Conventional AmBC…

Information Theory · Computer Science 2018-01-08 Gang Yang , Qianqian Zhang , Ying-Chang Liang

Lattice codes used under the Compute-and-Forward paradigm suggest an alternative strategy for the standard Gaussian multiple-access channel (MAC): The receiver successively decodes integer linear combinations of the messages until it can…

Information Theory · Computer Science 2016-11-17 Jingge Zhu , Michael Gastpar

Ambient backscatter communication has shown great potential in the development of future wireless networks. It enables a backscatter transmitter (BTx) to send information directly to an adjacent receiver by modulating over ambient radio…

Information Theory · Computer Science 2019-08-16 Shaoqing Zhou , Wei Xu , Kezhi Wang , Cunhua Pan , Mohamed-Slim Alouini , Arumugam Nallanathan