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Multiple transmitting antennas can considerably increase the downlink spectral efficiency by beamforming to multiple users at the same time. However, multiuser beamforming requires channel state information (CSI) at the transmitter, which…

Information Theory · Computer Science 2017-01-31 Xu Du , John Tadrous , Ashutosh Sabharwal

In-band full-duplex (FD) communication provides a promising alternative to half-duplex (HD) for wireless systems, due to increased spectral efficiency and capacity. In this paper, HD and FD radio implementations of two way, two hop and two…

Information Theory · Computer Science 2018-06-12 Nirmal V. Shende , Ozgur Gurbuz , Elza Erkip

Reliable estimation of users' channels and data in rapidly time varying fading environments is a very challenging task of multiuser detection (MUD) techniques that promise impressive capacity gains for interference limited systems such as…

Information Theory · Computer Science 2012-05-15 Indu L. Shakya , Falah H. Ali

The challenge to in-band full-duplex wireless communication is managing self-interference. Many designs have employed spatial isolation mechanisms, such as shielding or multi-antenna beamforming, to isolate the self-interference wave from…

Information Theory · Computer Science 2014-04-10 Evan Everett , Ashutosh Sabharwal

Interference between nodes is a critical impairment in mobile ad hoc networks (MANETs). This paper studies the role of multiple antennas in mitigating such interference. Specifically, a network is studied in which receivers apply…

Information Theory · Computer Science 2012-08-27 Kaibin Huang , Jeffrey G. Andrews , Dongning Guo , Robert W. Heath, , Randall A. Berry

We propose a novel artificial noise (AN) injection scheme for wireless systems over quasi-static fading channels, in which a single-antenna transmitter sends confidential messages to a half-duplex receiver in the presence of an…

Information Theory · Computer Science 2017-05-10 Biao He , Yechao She , Vincent K. N. Lau

In this paper, we present and study a digital-controlled method, called SoftNull, to enable full-duplex in many-antenna systems. Unlike most designs that rely on analog cancelers to suppress self-interference, SoftNull relies on digital…

Information Theory · Computer Science 2017-03-28 Evan Everett , Clayton Shepard , Lin Zhong , Ashutosh Sabharwal

We study the potential of data-driven deep learning methods for separation of two communication signals from an observation of their mixture. In particular, we assume knowledge on the generation process of one of the signals, dubbed signal…

Signal Processing · Electrical Eng. & Systems 2023-06-28 Alejandro Lancho , Amir Weiss , Gary C. F. Lee , Jennifer Tang , Yuheng Bu , Yury Polyanskiy , Gregory W. Wornell

Cell-free (CF) architecture and full-duplex (FD) communication are leading candidates for next-generation wireless networks. The CF framework removes cell boundaries in traditional cell-based systems, thereby mitigating inter-cell…

Signal Processing · Electrical Eng. & Systems 2024-12-09 Diluka Galappaththige , Mohammadali Mohammadi , Hien Quoc Ngo , Michail Matthaiou , Chintha Tellambura

This study employs a uniform rectangular array (URA) sub-connected hybrid beamforming (SC-HBF) architecture to provide a novel self-interference (SI) suppression scheme in a full-duplex (FD) massive multiple-input multiple-output (mMIMO)…

Information Theory · Computer Science 2024-02-14 Mobeen Mahmood , Yuanxing Zhang , Robert Morawski , Tho Le-Ngoc

A digitally-assisted photonic analog domain self-interference cancellation (SIC) and frequency downconversion method is proposed for in-band full-duplex multiple-input multiple-output (MIMO) systems using the least square (LS) algorithm…

Signal Processing · Electrical Eng. & Systems 2022-09-28 Moxuan Han , Yang Chen

In this work, we propose a covert communication scheme where the transmitter attempts to hide its transmission to a full-duplex receiver, from a warden that is to detect this covert transmission using a radiometer. Specifically, we first…

Information Theory · Computer Science 2017-11-13 Jinsong Hu , Khurram Shahzad , Shihao Yan , Xiangyun Zhou , Feng Shu , Jun Li

In this paper, we propose a method for acquiring accurate and timely channel state information (CSI) by leveraging full-duplex transmission. Specifically, we propose a mobile communication system in which base stations continuously transmit…

Information Theory · Computer Science 2017-02-22 Jesus Arnau , Marios Kountouris

Radio frequency transceivers operating in in-band full-duplex or frequency-division duplex mode experience strong transmitter leakage. Combined with receiver nonlinearities, this causes intermodulation products in the baseband, possibly…

Signal Processing · Electrical Eng. & Systems 2021-06-08 Thomas Paireder , Christian Motz , Mario Huemer

This paper provides a unified framework to study the performance of successive interference cancellation (SIC) in wireless networks with arbitrary fading distribution and power-law path loss. An analytical characterization of the…

Information Theory · Computer Science 2014-02-10 Xinchen Zhang , Martin Haenggi

In this paper, for a single-input multiple-output (SIMO) system aided by a passive reconfigurable intelligent surface (RIS), the joint transmission accomplished by the single transmit antenna and the RIS with multiple controllable…

Information Theory · Computer Science 2023-11-27 Ru-Han Chen , Jing Zhou , Yonggang Zhu , Kai Zhang

In a cognitive radio system the failure of secondary user (SU) transceivers to promptly vacate the channel can introduce significant access-latency for primary or high-priority users (PU). In conventional cognitive radio systems, the…

Information Theory · Computer Science 2016-09-06 Orion Afisiadis , Andrew C. M. Austin , Alexios Balatsoukas-Stimming , Andreas Burg

The recent developments in self-interference (SI) cancellation techniques have led to the practical realization of full-duplex (FD) radios that can perform simultaneous transmission and reception. FD technology is attractive for various…

Networking and Internet Architecture · Computer Science 2018-06-06 M. Omar Al-Kadri , Adnan Aijaz , Arumugam Nallanathan

Commercial coherent receivers utilize balanced photodetectors (PDs) with high single-port rejection ratio (SPRR) to mitigate the signal-signal beat interference (SSBI) due to the square-law detection process. As the symbol rates of coherent…

Signal Processing · Electrical Eng. & Systems 2022-03-14 Son Thai Le , Vahid Aref , Junho Cho

Given a set of samples, a few of them being possibly saturated, we propose an efficient algorithm in order to cancel saturation while reconstructing band-limited signals. Our method satisfies a minimum-loss constraint and relies on…

Signal Processing · Electrical Eng. & Systems 2018-09-20 Kyong Hwan Jin , Gain Kim , Yusuf Leblebici , Jong Chul Ye , Michael Unser