Introduction to Reconfigurable Intelligent Surfaces (RIS)
Reconfigurable Intelligent Surfaces (RIS) are a key technology for 6G networks, enabling control over the wireless channel.
What is RIS?
A RIS is a two-dimensional, artificial metasurface composed of a large array of passive, low-cost reflecting elements, controlling incident electromagnetic waves by adjusting the phase shift of each individual element.
Operation and Principles
In conventional wireless systems, the propagation channel is uncontrollable, degrading signal quality through fading, absorption, and blockages. RIS technology treats the channel as a configurable part of the network.
Instead of just fighting the wireless channel, we could control it.
This technology set to redefine the radio propagation environment, providing a technical overview of RIS principles and operation.
Author's summary: RIS technology controls wireless channels.More News
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