Updated version of the requirements and README

README.md

@@ -1,9 +1,9 @@
 # ris-control
 
-Code implementing the performance evaluation of the paper "A Framework for Control Channels Applied to Reconfigurable Intelligent Surfaces"
+Code implementing the performance evaluation of the paper "On the Impact of Control Signaling in RIS-Empowered Wireless Communications"
 
 ## Abstract
-> The research on Reconfigurable Intelligent Surfaces (RISs) has dominantly been focused on physical-layer aspects and analyses of the achievable adaptation of the propagation environment. Compared to that, the questions related to link/MAC protocol and system-level integration of RISs have received much less attention. This paper addresses the problem of designing and analyzing control/signaling procedures, which are necessary for the integration of RISs as a new type of network element within the overall wireless infrastructure. We build a general model for designing control channels along two dimensions: i) allocated bandwidth (in-band and out-of band) and ii) rate selection (multiplexing or diversity). Specifically, the second dimension results in two transmission schemes, one based on channel estimation and the subsequent adapted RIS configuration, while the other is based on sweeping through predefined RIS phase profiles. The paper analyzes the performance of the control channel in multiple communication setups, obtained as combinations of the aforementioned dimensions. While necessarily simplified, our analysis reveals the basic trade-offs in designing control channels and the associated communication algorithms. Perhaps the main value of this work is to serve as a framework for subsequent design and analysis of various system-level aspects related to the RIS technology.
+> The research on Reconfigurable Intelligent Surfaces (RISs) has dominantly been focused on physical-layer aspects and analyses of the achievable adaptation of the wireless propagation environment. Compared to that, questions related to system-level integration of RISs have received less attention. We address this research gap by analyzing the necessary control/signaling operations that are necessary to integrate RIS as a new type of wireless infrastructure element. We build a general model for evaluating the impact of control operations along two dimensions: i) the allocated bandwidth of the control channels (in-band and out-of-band), and ii) the rate selection for the data channel (multiplexing or diversity). Specifically, the second dimension results in two generic transmission schemes, one based on channel estimation and the subsequent optimization of the RIS, while the other is based on sweeping through predefined RIS phase configurations. We analyze the communication performance in multiple setups built along these two dimensions. While necessarily simplified, our analysis reveals the basic trade-offs in RIS-assisted communication and the associated control operations. The main contribution of the paper is a methodology for systematic evaluation of the control overhead in RIS-aided networks, regardless of the specific control schemes used. 
 
 The paper is submitted to Transactions on Wireless Communications.
 A preprint version can be found [here](http://arxiv.org/abs/2303.16797)
@@ -27,4 +27,4 @@ cc_reliability.py
 
 The standard parameters can be edited changing ```environment.py```. 
 Check and edit ```scenario.common.standard_output_dir``` to change the default saving folder.
-
+

requirements.txt

@@ -1,4 +1,4 @@
-numpy==1.21.5
+numpy==1.22.0
 scipy>=1.10.0
 matplotlib~=3.5.1
 tqdm~=4.64.0