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eess.SP2024
Wireless communications with user equipment mounted Reconfigurable Intelligent Surfaces
I. Zakir Ahmed, Hamid Sadjadpour
In traditional Reconfigurable Intelligent Surfaces (RIS) systems, the RIS is mounted on stationary structures like buildings, walls, or posts. They have shown promising results in…
eess.SP2023
An ML-assisted OTFS vs. OFDM adaptable modem
I. Zakir Ahmed, Hamid R. Sadjadpour
The Orthogonal-Time-Frequency-Space (OTFS) signaling is known to be resilient to doubly-dispersive channels, which impacts high mobility scenarios. On the other hand, the Orthogona…
eess.SP2021
Constrained Resource Allocation Problems in Communications: An Information-assisted Approach
I. Zakir Ahmed, Hamid Sadjadpour, Shahram Yousefi
We consider a class of resource allocation problems given a set of unconditional constraints whose objective function satisfies Bellman's optimality principle. Such problems are ub…