Wireless Video Transmission with Over-the-Air Packet Mixing

TL;DR

This paper introduces a novel wireless PHY supporting cooperative forwarding of superimposed packets, optimizing video transmission efficiency through interference management and relay cooperation.

Contribution

It presents a new PHY design enabling superimposed packet forwarding and formulates an optimization framework for improved wireless video transmission.

Findings

Superimposing packets can outperform traditional PHY in certain conditions.

The proposed system achieves higher transmission rates with cooperative relays.

Simulation identifies optimal operating regions for interference-based transmission.

Abstract

In this paper, we propose a system for wireless video transmission with a wireless physical layer (PHY) that supports cooperative forwarding of interfered/superimposed packets. Our system model considers multiple and independent unicast transmissions between network nodes while a number of them serve as relays of the interfered/superimposed signals. For this new PHY the average transmission rate that each node can achieve is estimated first. Next, we formulate a utility optimization framework for the video transmission problem and we show that it can be simplified due to the features of the new PHY. Simulation results reveal the system operating regions for which superimposing wireless packets is a better choice than a typical cooperative PHY.