Passive environment-assisted communication takes place via a quantum channel modeled as unitary interaction between the information carrying system and an environment, where latter is controlled by passive helper, who can set its initial state such to assist sender receiver, but not help actively adjusting her behaviour depending on message. Here we investigate transmission capabilities in this...

In this letter, we investigate the mutual information rate (MIR) achieved by an independent identically distributed (IID) Gaussian input on intensity-driven signal transduction channel. Specifically, asymptotic expression of continuous-time MIR is given. Next, aiming at low computational complexity, also deduce approximately numerical solution for MIR. Moreover, corresponding lower and upper bo...

The capacity region of a two-user linear Gaussian compound Multiple Access Channel with common message (CMACC) and intersymbol interference (ISI) under an input power constraint is derived. To obtain the capacity region we first convert the channel to its equivalent memoryless one by defining an n-block memoryless circular Gaussian CMACC model. We then make use of the discrete Fourier transform...