Publications

This paper addresses the critical problem of high overhead in channel information acquisition for hybrid precoding in massive multiple-input multiple-output (MIMO) system.

Design, hardware, and operating software of a special purpose computer built for the Monte Carlo simulations of a wide class of random Ising spin systems is described.

Existing capacity constrained cellular networks that operate in fixed spectrum bands can be enhanced with capacity-on-demand services using the Coordinated Dynamic Spectrum Access (CDSA) model.

We demonstrate a widely tunable laser transmitter that accesses 32 ITU channels with 100 GHz spacing and switches between all channel combinations in less than 45 ns.

Audio augmented reality (AAR) applications need to render virtual sounds with acoustic effects that match the real environment of the user to create an experience with strong sense of presence.

Knowledge of accurate and timely channel state information (CSI) at the transmitter is becoming increasingly important in wireless communication systems.

Design and performance of a novel, fast, endless, and continuously tunable nematic liquid crystal polarization controller is reported.

We have developed fast-tunable multi-frequency lasers and SG- DBR lasers that switch wavelength on the nanosecond timescale.

We demonstrate a silicon photonics filter based on ring resonator for an integrated receiver in access networks.

In real-time augmented reality applications, it is important to find and track the 3D position and orientation of a moving camera with high accuracy.