24 citations · 31 across the 6 of their papers we have counts for
6 papers
Secure Block Joint Source-Channel Coding with Sequential Encoding
Hamid Ghourchian, Tobias J. Oechtering, Mikael Skoglund
We extend the results of Ghourchian et al. [IEEE JSAIT-2021], to joint source-channel coding with eavesdropping. Our work characterizes the sequential encoding process using the cu…
Secure Source Coding with Side-information at Decoder and Shared Key at Encoder and Decoder
Hamid Ghourchian, Photios A. Stavrou, Tobias J. Oechtering +1
We study the problem of rate-distortion-equivocation with side-information only available at the decoder when an independent private random key is shared between the sender and the…
Secure Block Source Coding with Sequential Encoding
Hamid Ghourchian, Photios A. Stavrou, Tobias J. Oechtering +1
We introduce fundamental bounds on achievable cumulative rate distribution functions (CRDF) to characterize a sequential encoding process that ensures lossless or lossy reconstruct…
Existence and Continuity of Differential Entropy for a Class of Distributions
Hamid Ghourchian, Amin Gohari, Arash Amini
In this paper, we identify a class of absolutely continuous probability distributions, and show that the differential entropy is uniformly convergent over this space under the metr…
How Compressible are Innovation Processes?
Hamid Ghourchian, Arash Amini, Amin Gohari
The sparsity and compressibility of finite-dimensional signals are of great interest in fields such as compressed sensing. The notion of compressibility is also extended to infinit…
On the Capacity of a Class of Signal-Dependent Noise Channels
Hamid Ghourchian, Gholamali Aminian, Amin Gohari +2
In some applications, the variance of additive measurement noise depends on the signal that we aim to measure. For instance, additive Gaussian signal-dependent noise (AGSDN) channe…