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We study the secrecy capacity of a helper-assisted Gaussian wiretap channel with a source, a legitimate receiver, an eavesdropper and an external helper, where each terminal is equipped with multiple antennas. Determining the secrecy…

Information Theory · Computer Science 2015-09-16 Lingxiang Li , Zhi Chen , Jun Fang , and Athina P. Petropulu

In this paper, we study the degraded compound multi-receiver wiretap channel. The degraded compound multi-receiver wiretap channel consists of two groups of users and a group of eavesdroppers, where, if we pick an arbitrary user from each…

Information Theory · Computer Science 2009-10-19 Ersen Ekrem , Sennur Ulukus

We propose the problem of wiretapped commitment, where two parties, say committer Alice and receiver Bob, engage in a commitment protocol using a noisy channel as a resource, in the presence of an eavesdropper, say Eve. Noisy versions of…

Information Theory · Computer Science 2024-06-21 Anuj Kumar Yadav , Manideep Mamindlapally , Amitalok J. Budkuley

This paper considers a Gaussian multi-input multi-output (MIMO) wiretap channel with a legitimate transmitter, a legitimate receiver (Bob), an eavesdropper (Eve), and a cooperative jammer. All nodes may be equipped with multiple antennas.…

Information Theory · Computer Science 2024-07-03 Hao Xu , Kai-Kit Wong , Yinfei Xu , Giuseppe Caire

In this paper we consider the robust secure beamformer design for MISO wiretap channels. Assume that the eavesdroppers' channels are only partially available at the transmitter, we seek to maximize the secrecy rate under the transmit power…

Information Theory · Computer Science 2013-10-29 Shuai Ma , Mingyi Hong , Enbin Song , Xiangfeng Wang , Dechun Sun

In this paper, we consider secure transmissions in ergodic Rayleigh fast-faded multiple-input multiple-output multiple-antenna-eavesdropper (MIMOME) wiretap channels with only statistical channel state information at the transmitter (CSIT).…

Information Theory · Computer Science 2014-05-13 Shih-Chun Lin , Cheng-Liang Lin

We consider linear precoder design for a multiple-input multiple-output (MIMO) Gaussian wiretap channel, which comprises two legitimate nodes, i.e., Alice and Bob, operating in Full-Duplex (FD) mode and exchanging confidential messages in…

Information Theory · Computer Science 2016-11-16 Lingxiang Li , Zhi Chen , A. P. Petropulu , Jun Fang

We study the Gaussian MIMOME wiretap channel where a transmitter wishes to communicate a confidential message to a legitimate receiver in the presence of eavesdroppers, while the eavesdroppers should not be able to decode the confidential…

Information Theory · Computer Science 2016-03-08 Sina Lashgari , Amir Salman Avestimehr

This paper considers a multiple-input multiple-output (MIMO) Gaussian wiretap channel model, where there exists a transmitter, a legitimate receiver and an eavesdropper, each equipped with multiple antennas. In this paper, we first revisit…

Information Theory · Computer Science 2015-06-11 S. Ali A. Fakoorian , A. Lee Swindlehurst

We study the multi-receiver wiretap channel with public and confidential messages. In this channel, there is a transmitter that wishes to communicate with two legitimate users in the presence of an external eavesdropper. The transmitter…

Information Theory · Computer Science 2011-06-22 Ersen Ekrem , Sennur Ulukus

We study a multi-antenna broadcast channel with two legitimate receivers and an external eavesdropper. We assume that the channel matrix of the eavesdropper is unknown to the legitimate terminals but satisfies a maximum rank constraint. As…

Information Theory · Computer Science 2016-11-15 Xiang He , Ashish Khisti , Aylin Yener

This paper considers a Gaussian multi-input multi-output (MIMO) multiple access wiretap (MAC-WT) channel, where an eavesdropper (Eve) wants to extract the confidential information of all users. Assuming that both the legitimate receiver and…

Information Theory · Computer Science 2022-09-20 Hao Xu , Kai-Kit Wong , Giuseppe Caire

We study the Gaussian multiple-input multiple-output (MIMO) wiretap channel, which consists of a transmitter, a legitimate user, and an eavesdropper. In this channel, the transmitter sends a common message to both the legitimate user and…

Information Theory · Computer Science 2010-05-05 Ersen Ekrem , Sennur Ulukus

We consider the multiple-input multiple-output (MIMO) wiretap channel under a minimum receiver-side power constraint in addition to the usual maximum transmitter-side power constraint. This problem is motivated by energy harvesting…

Information Theory · Computer Science 2016-11-17 Karim Banawan , Sennur Ulukus

In physical layer security (PHY-security), the frequently observed high correlation between the main and wiretap channels can cause a significant loss of secrecy. This paper investigates a slow fading scenario, where a transmitter (Alice)…

Information Theory · Computer Science 2017-08-16 Shuai Han , Sai Xu , Weixiao Meng , Cheng Li

We consider a Gaussian MISO wiretap channel, where a multi-antenna source communicates with a single-antenna destination in the presence of a single-antenna eavesdropper. The communication is assisted by multi-antenna helpers that act as…

Information Theory · Computer Science 2012-09-20 Shuangyu Luo , Jiangyuan Li , Athina Petropulu

We consider a complex Gaussian wiretap channel with finite-resolution analog-to-digital converters (ADCs) at both the legitimate receiver and the eavesdropper. For this channel, we show that a positive secrecy rate is always achievable as…

Information Theory · Computer Science 2020-06-02 Seung-Hyun Nam , Si-Hyeon Lee

A multiple-input single-output (MISO) wiretap channel model is considered, that includes a multi-antenna transmitter, a single-antenna legitimate receiver and a single-antenna eavesdropper. For the scenario in which spherical uncertainty…

Information Theory · Computer Science 2015-05-30 Jiangyuan Li , Athina P. Petropulu

The MIMOME channel is a Gaussian wiretap channel in which the sender, receiver, and eavesdropper all have multiple antennas. We characterize the secrecy capacity as the saddle-value of a minimax problem. Among other implications, our result…

Information Theory · Computer Science 2007-10-09 Ashish Khisti , Gregory Wornell

In this paper, we consider a scenario where a source node wishes to broadcast two confidential messages for two respective receivers via a Gaussian MIMO broadcast channel. A wire-tapper also receives the transmitted signal via another MIMO…

Information Theory · Computer Science 2009-05-01 Ghadamali Bagherikaram , Abolfazl S. Motahari , Amir K. Khandani