14 citations · 22 across the 12 of their papers we have counts for
11 papers · 1 filter
On the Age of Information of a Queuing System with Heterogeneous Servers
Anhad Bhati, Sibi Raj B. Pillai, Rahul Vaze
An optimal control problem with heterogeneous servers to minimize the average age of information (AoI) is considered. Each server maintains a separate queue, and each packet arrivi…
Multiple Access Channel Simulation
Gowtham R. Kurri, Viswanathan Ramachandran, Sibi Raj B. Pillai +1
We study the problem of simulating a two-user multiple-access channel (MAC) over a multiple access network of noiseless links. Two encoders observe independent and identically dist…
On the Capacity Enlargement of Gaussian Broadcast Channels with Passive Noisy Feedback
Aditya Narayan Ravi, Sibi Raj B. Pillai, Vinod Prabhakaran +1
It is well known that the capacity region of an average transmit power constrained Gaussian Broadcast Channel (GBC) with independent noise realizations at the receivers is enlarged…
Online Energy Harvesting Problem Over An Arbitrary Directed Acyclic Graph Network
Rahul Vaze, Sibi Raj B Pillai
A communication network modelled by a directed acyclic graph (DAG) is considered, over which a source wishes to send a specified number of bits to a destination node. Each node of…
Joint State Estimation and Communication over a State-Dependent Gaussian Multiple Access Channel
Viswanathan Ramachandran, Sibi Raj B Pillai, Vinod M Prabhakaran
A hybrid communication network with a common analog signal and an independent digital data stream as input to each node in a multiple access network is considered. The receiver/bas…
Feedback-Capacity of Degraded Gaussian Vector BC using Directed Information and Concave Envelopes
Viswanathan Ramachandran, S. R. B. Pillai
It is known that the capacity region of a two user physically degraded discrete memoryless (DM) broadcast channel (BC) is not enlarged by feedback. An identical result holds true f…
Distributed Scheduling in Multiple Access with Bursty Arrivals and Delay Constraints
Sakshi Kapoor, Sreejith Sreekumar, Sibi Raj B Pillai
A multiple access system with bursty data arrivals to the terminals is considered. The users are frame-synchronized, with variable sized packets independently arriving in each slot…
On the Noisy Feedback Capacity of Gaussian Broadcast Channels
Sibi Raj B. Pillai, Vinod M. Prabhakaran
It is well known that, in general, feedback may enlarge the capacity region of Gaussian broadcast channels. This has been demonstrated even when the feedback is noisy (or partial-b…
Optimal WiFi Sensing via Dynamic Programming
Abhinav Kumar, Rahul Vaze, Sibi Raj B Pillai +1
The problem of finding an optimal sensing schedule for a mobile device that encounters an intermittent WiFi access opportunity is considered. At any given time, the WiFi is in any…
Distributed Rate Adaptation and Power Control in Fading Multiple Access Channels
Sreejith Sreekumar, Bikash K. Dey, Sibi Raj B. Pillai
Traditionally, the capacity region of a coherent fading multiple access channel (MAC) is analyzed in two popular contexts. In the first, a centralized system with full channel stat…
Power Controlled Adaptive Sum-Capacity of Fading MACs with Distributed CSI
Sibi Raj B. Pillai, Bikash K. Dey, Yash Deshpande +1
We consider the problem of finding optimal, fair and distributed power-rate strategies to achieve the sum capacity of the Gaussian multiple-access block-fading channel. In here, th…