AI Chat AI Image Generator AI Video Text to Speech

High SNR Analysis of RIS aided MIMO BC Channels

10/27/2022

∙

by Dominik Semmler, et al.

∙

∙

We analyze the influence of an reconfigurable intelligent surface (RIS) on the channel eigenvalues within a high signal-to-noise ratio (SNR) scenario. This allows to connect specific channel properties with the rank improvement capabilities of the RIS. In particular, fundamental limits due to a possible line of sight (LOS) setup between the base station (BS) and the RIS are derived. Furthermore, dirty paper coding (DPC) based schemes are compared to linear precoding in such a scenario and it is shown that under certain channel conditions, the performance gap between DPC and linear precoding can be made arbitrarily small by the RIS.

Dominik Semmler
1 publication
Michael Joham
10 publications
Wolfgang Utschick
42 publications

research

∙ 10/07/2021

Optimal SNR Analysis for Single-user RIS Systems in Ricean and Rayleigh Environments

We present an analysis of the optimal uplink (UL) SNR of a SIMO Reconfig...

0 Ikram Singh, et al. ∙

research

∙ 01/30/2019

Lower Bound on the Sum-rate of Decremental Beam Selection Algorithm for Beamspace MIMO Systems

In general, the zero-forcing (ZF) precoding suffers from a severe receiv...

0 Naveed Iqbal, et al. ∙

research

∙ 09/12/2022

Phase Dependent Loss Analysis for RIS Systems

In this paper we focus on phase dependent loss (PDL), an important aspec...

0 Ikram Singh, et al. ∙

research

∙ 08/21/2020

Optimal SNR Analysis for Single-user RIS Systems

In this paper, we present an analysis of the optimal uplink SNR of a SIM...

0 Ikram Singh, et al. ∙

research

∙ 02/04/2016

Fundamental Limits in Multi-image Alignment

The performance of multi-image alignment, bringing different images into...

0 Cecilia Aguerrebere, et al. ∙

research

∙ 10/19/2022

Asynchronous RIS-assisted Localization: A Comprehensive Analysis of Fundamental Limits

The reconfigurable intelligent surface (RIS) has drawn considerable atte...

0 Ziyi Gong, et al. ∙

research

∙ 05/12/2018

Security-Enhanced SC-FDMA Transmissions Using Temporal Artificial-Noise and Secret-Key Aided Schemes

We investigate the physical layer security of uplink single-carrier freq...

0 Mohamed F. Marzban, et al. ∙