# Transmission Through Large Intelligent Surfaces: A New Frontier in Wireless Communications

## TL;DR

This paper introduces large intelligent surfaces (LIS) as a transformative technology for future wireless communications, providing a mathematical framework for performance analysis and exploring their potential as both reflectors and access points.

## Contribution

It presents a comprehensive mathematical framework for LIS-assisted systems and proposes using LIS as an access point, advancing the understanding of LIS in wireless networks.

## Key findings

- LIS can significantly improve signal quality and reliability.
- LIS-based systems outperform traditional methods in simulations.
- LIS can function effectively as an intelligent reflector or access point.

## Abstract

In this paper, transmission through large intelligent surfaces (LIS) that intentionally modify the phases of incident waves to improve the signal quality at the receiver, is put forward as a promising candidate for future wireless communication systems and standards. For the considered LIS-assisted system, a general mathematical framework is presented for the calculation of symbol error probability (SEP) by deriving the distribution of the received signal-to-noise ratio (SNR). Next, the new concept of using the LIS itself as an access point (AP) is proposed. Extensive computer simulation results are provided to assess the potential of LIS-based transmission, in which the LIS acts either as an intelligent reflector or an AP with or without the knowledge of channel phases. Our findings reveal that LIS-based communications can become a game-changing paradigm for future wireless systems.