9 papers
Fisher Information and Support Complexity of Gaussian Mixtures
Luca Barletta, Alex Dytso
We study lower bounds on the Fisher information of Gaussian location mixtures and their applications to estimation problems. First, for a discrete mixing distribution, we derive a…
Fundamental Limits of Dynamic Tracking and Communication: A Stationary Policy Formulation
Mohammadreza Bakhshizadeh Mohajer, Luca Barletta, Alex Dytso +1
We study a dynamic integrated sensing-and-communication problem in which a multi-antenna transmitter communicates with a receiver while simultaneously tracking a moving target gove…
On the Evolution of the Capacity-Achieving Input Support for the Amplitude-Constrained AWGN Channel
Luca Barletta, Alex Dytso
We consider an additive white Gaussian noise channel subject to a peak-amplitude constraint and study how the support of the capacity-achieving input distribution (CAID) evolves as…
Support Size of -Capacity-Achieving Inputs for the Amplitude-Constrained AWGN Channel
Luca Barletta, Alex Dytso
We study the amplitude-constrained additive white Gaussian noise (AWGN) channel from the perspective of near-optimal input distributions. While it is known that the capacity-achiev…
Anytime-Valid Quantum State Tomography via Confidence Sequences
Aldo Cumitini, Luca Barletta, Osvaldo Simeone
In this letter, we address the problem of developing quantum state tomography (QST) methods that remain valid at any time during a sequence of measurements. Specifically, the aim i…
A General Ziv-Zakai Bound for DoA Estimation in MIMO Radar Systems
Mohammadreza Bakhshizadeh Mohajer, Daniela Tuninetti, Luca Barletta
This paper derives a Ziv-Zakai Bound (ZZB) on the Mean Squared Error (MSE) for Direction-of-Arrival (DoA) estimation in co-located Multiple-Input Multiple-Output (MIMO) radar syste…
A Rate-Distortion Bound for Integrated Sensing and Communication
Mohammadreza Bakhshizadeh Mohajer, Alex Dytso, Daniela Tuninetti +1
We develop a general rate--distortion bound (RDB) for the fundamental sensing--communication tradeoff in integrated sensing and communication (ISAC) systems. The RDB lower-bounds t…
A Poincaré Lower Bound Approach for Performance Trade-offs in MIMO ISAC Systems with Blockage
Mohammadreza Bakhshizadeh Mohajer, Luca Barletta, Daniela Tuninetti +3
Characterizing the performance trade-offs between sensing and communication subsystems is essential for enabling integrated sensing and communication systems. Various metrics exist…
MMSE Channel Estimation in Fading MIMO Gaussian Channels With Blockage: A Novel Lower Bound via Poincaré Inequality
Mohammadreza Bakhshizadeh Mohajer, Luca Barletta, Daniela Tuninetti +3
Integrated sensing and communication is regarded as a key enabler for next-generation wireless networks. To optimize the transmitted waveform for both sensing and communication, va…