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We consider the problem of covert communication over a state-dependent channel, where the transmitter has causal or noncausal knowledge of the channel states. Here, "covert" means that a warden on the channel should observe similar…

信息论 · 计算机科学 2017-08-09 Si-Hyeon Lee , Ligong Wang , Ashish Khisti , Gregory W. Wornell

We determine conditions for the presence of stochastic resonance in a lossy bosonic channel with a nonlinear, threshold decoding. The stochastic resonance effect occurs if and only if the detection threshold is outside of a "forbidden…

量子物理 · 物理学 2013-01-14 Cosmo Lupo , Stefano Mancini , Mark M. Wilde

This paper investigates the additive white Gaussian noise two-way relay channel, where two users exchange messages through a relay. Asymmetrical channels are considered where the users can transmit data at different rates and at different…

信息论 · 计算机科学 2011-10-26 Lawrence Ong , Christopher M. Kellett , Sarah J. Johnson

An additive noise channel is considered, in which the distribution of the noise is nonparametric and unknown. The problem of learning encoders and decoders based on noise samples is considered. For uncoded communication systems, the problem…

信息论 · 计算机科学 2021-11-17 Nir Weinberger

This paper considers a system where one transmitter broadcasts a single common message to two receivers linked by a bidirectional cooperation channel, which is assumed to be orthogonal to the downlink channel. Assuming a simplified setup…

信息论 · 计算机科学 2010-11-23 E. V. Belmega , B. Djeumou , S. Lasaulce

We present simple coding strategies, which are variants of the Schalkwijk-Kailath scheme, for communicating reliably over additive white noise channels in the presence of corrupted feedback. More specifically, we consider a framework…

信息论 · 计算机科学 2007-07-13 Nuno C Martins , Tsachy Weissman

The transmission of digital data is one of the principal tasks in modern wireless communication. Classically, the communication channel consists of one transmitter and one receiver; however, due to the constantly increasing demand in higher…

信息论 · 计算机科学 2015-01-08 Andrei Osipov

We consider the continuous-time ARMA(1,1) Gaussian channel and derive its feedback capacity in closed form. More specifically, the channel is given by $\boldsymbol{y}(t) =\boldsymbol{x}(t) +\boldsymbol{z}(t)$, where the channel input…

信息论 · 计算机科学 2024-04-11 Jun Su , Guangyue Han , Shlomo Shamai

The efficacy of a specially constructed Gallager-type error-correcting code to communication in a Gaussian channel is being examined. The construction is based on the introduction of complex matrices, used in both encoding and decoding,…

无序系统与神经网络 · 物理学 2009-10-31 Ido Kanter , David Saad

Linear coding schemes have been the main choice of coding for the additive white Gaussian noise broadcast channel (AWGN-BC) with noiseless feedback in the literature. The achievable rate regions of these schemes go well beyond the capacity…

信息论 · 计算机科学 2016-11-15 Ziad Ahmad , Zachary Chance , David J. Love

Zero-delay transmission of a Gaussian source over an additive white Gaussian noise (AWGN) channel is considered in the presence of an additive Gaussian interference signal. The mean squared error (MSE) distortion is minimized under an…

信息论 · 计算机科学 2016-04-15 Morteza Varasteh , Deniz Gündüz , Ertem Tuncel

In this paper, a new and general version of Gaussian channel in presence of two-sided state information correlated to the channel input and noise is considered. Determining a general achievable rate for the channel and obtaining the…

信息论 · 计算机科学 2015-07-20 Nima S. Anzabi-Nezhad , Ghosheh Abed Hodtani , Mohammad Molavi Kakhki

The problem of simultaneous message transmission and state amplification in a Gaussian channel with additive Gaussian state is studied when the sender has imperfect noncausal knowledge of the state sequence. Inner and outer bounds to the…

信息论 · 计算机科学 2016-11-18 Bernd Bandemer , Chao Tian , Shlomo Shamai

The task of jointly communicating a message and reconstructing a common estimate of the channel state is examined for a fading Gaussian model with additive state interference. The state is an independent and identically distributed Gaussian…

信息论 · 计算机科学 2026-01-07 Viswanathan Ramachandran

We obtain new outer bounds on the capacity regions of the two-user multiple access channel with generalized feedback (MAC-GF) and the two-user interference channel with generalized feedback (IC-GF). These outer bounds are based on the idea…

信息论 · 计算机科学 2016-11-18 Ravi Tandon , Sennur Ulukus

Channel coding for discrete memoryless channels (DMCs) with mean and variance cost constraints has been recently introduced. We show that there is an improvement in coding performance due to cost variability, both with and without feedback.…

信息论 · 计算机科学 2025-07-10 Adeel Mahmood , Aaron B. Wagner

This paper quantifies the fundamental limits of variable-length transmission of a general (possibly analog) source over a memoryless channel with noiseless feedback, under a distortion constraint. We consider excess distortion, average…

信息论 · 计算机科学 2017-02-28 Victoria Kostina , Yury Polyanskiy , Sergio Verdú

Non-Gaussian receivers for optical communication with coherent states can achieve measurement sensitivities beyond the limits of conventional detection, given by the quantum-noise limit (QNL). However, the amount of information that can be…

量子物理 · 物理学 2021-02-16 M. T. DiMario , F. E. Becerra

We study communication with consensus over a broadcast channel - the receivers reliably decode the sender's message when the sender is honest, and their decoder outputs agree even if the sender acts maliciously. We characterize the…

信息论 · 计算机科学 2025-03-27 Neha Sangwan , Varun Narayanan , Vinod M. Prabhakaran

The scalar additive Gaussian noise channel has the "single crossing point" property between the minimum-mean square error (MMSE) in the estimation of the input given the channel output, assuming a Gaussian input to the channel, and the MMSE…

信息论 · 计算机科学 2016-11-17 Ronit Bustin , Miquel Payaro , Daniel Palomar , Shlomo Shamai