Satellite

Delay spread

Quantum mechanics

Engineering

Aerospace engineering

Multipath propagation

Real-time computing

Mobility model

Telecommunications

Propagation delay

Power (physics)

Link budget

Computer science

Radio propagation

Surface (topology)

Path loss

Computer network

Physics

Mathematics

Astronomy

Low earth orbit

Electronic engineering

Radio propagation model

Path (computing)

Reliability (semiconductor)

Geometry

Channel (broadcasting)

Topology (electrical circuits)

Wireless

Electrical engineering

Doppler effect

IEEE Wireless Communications Letters

The operation of an intelligent reflecting surface (IRS) under predictable receiver mobility is investigated. We develop a continuous time system model for multipath channels and discuss the optimal IRS configuration with respect to received power, Doppler spread, and delay spread. It is shown that the received power can be maximized without adding Doppler spread to the system. In a numerical case study, we show that an IRS having the size of just two large billboards can improve the link budget of ground to Low Earth Orbit (LEO) satellite links by up to 6 dB. It also adds a second, almost equivalently strong, communication path that improves the link reliability.

Intelligent Reflecting Surface Operation Under Predictable Receiver Mobility: A Continuous Time Propagation Model