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Kamyar Rajabalifardi

2 accepted papers

2025

Optimum Power-Subcarrier Allocation and Time-Sharing in Multicarrier NOMA Uplink

Sagnik Bhattacharya, Kamyar Rajabalifardi, Muhammad Ahmed Mohsin, John M. Cioffi
ICASSP 2025accepted

Currently used resource allocation methods for uplink multicarrier non-orthogonal multiple access (MC-NOMA) systems have multiple shortcomings. Current approaches either allocate the same power across all subcarriers to a user, or use heuristic-based near-far, strong channel-weak channel user groupi…

Cited by 0Source ↗Scholar ↗
2025

Successive Interference Cancellation-aided Diffusion Models for Joint Channel Estimation and Data Detection in Low Rank Channel Scenarios

Sagnik Bhattacharya, Muhammad Ahmed Mohsin, Kamyar Rajabalifardi, John M. Cioffi
ICASSP 2025accepted

This paper proposes a novel joint channel-estimation and source-detection algorithm using successive interference cancellation (SIC)-aided generative score-based diffusion models. Prior work in this area focuses on massive MIMO scenarios, which are typically characterized by full-rank channels, and…

Cited by 0Source ↗Scholar ↗