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Joint Delay-Phase Precoding Under True-Time Delay Constraints in Wideband Sub-THz Hybrid Massive MIMO Systems
Dang Qua Nguyen, Taejoon Kim
In wideband sub-Terahertz (sub-THz) massive multiple-input multiple-output (MIMO) communication systems, the beam squint effect manifests as a substantial degradation in array gain…
Linear Coding for Gaussian Two-Way Channels
Junghoon Kim, Seyyedali Hosseinalipour, Taejoon Kim +2
We consider linear coding for Gaussian two-way channels (GTWCs), in which each user generates the transmit symbols by linearly encoding both its message and the past received symbo…
Deep Reinforcement Learning-Based Adaptive IRS Control with Limited Feedback Codebooks
Junghoon Kim, Seyyedali Hosseinalipour, Andrew C. Marcum +3
Intelligent reflecting surfaces (IRS) consist of configurable meta-atoms, which can alter the wireless propagation environment through design of their reflection coefficients. We c…
MMV-Based Sequential AoA and AoD Estimation for Millimeter Wave MIMO Channels
Wei Zhang, Miaomiao Dong, Taejoon Kim
The fact that the millimeter-wave (mmWave) multiple-input multiple-output (MIMO) channel has sparse support in the spatial domain has motivated recent compressed sensing (CS)-based…