31 citations · 143 across the 38 of their papers we have counts for
5 papers · 1 filter
How to Compute Modulo Prime-Power Sums ?
Mohsen Heidari, Farhad Shirani, Sandeep Pradhan
A new class of structured codes called Quasi Group Codes (QGC) is introduced. A QGC is a subset of a group code. In contrast with group codes, QGCs are not closed under group addit…
On the Necessity of Structured Codes for Communications over MAC with Feedback
Mohsen Heidari, Farhad Shirani, S. Sandeep Pradhan
The problem of three-user multiple-access channel (MAC) with noiseless feedback is investigated. A new coding strategy is presented. The coding scheme builds upon the natural exten…
A New Achievable Rate Region for Multiple-Access Channel with States
Mohsen Heidari, Farhad Shirani, S. Sandeep Pradhan
The problem of reliable communication over the multiple-access channel (MAC) with states is investigated. We propose a new coding scheme for this problem which uses quasi-group cod…
On the Sub-optimality of Single-letter Coding in Multi-terminal Communications
Farhad Shirani, S. Sandeep Pradhan
We investigate binary block-codes (BBC). A BBC is defined as a vector of Boolean functions. We consider BBCs which are generated randomly, and using single-letter distributions. We…
On the Correlation between Boolean Functions of Sequences of Random Variables
Farhad Shirani, S. Sandeep Pradhan
In this paper, we establish a new inequality tying together the effective length and the maximum correlation between the outputs of an arbitrary pair of Boolean functions which ope…