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 # R-WMMSE
-This is the code implementation for the R-WMMSE algorithm.
+This is the code implementation for the R-WMMSE algorithm.  
+CLick here for the original paper link:  
+[Rethinking WMMSE: Can Its Complexity Scale Linearly With the Number of BS Antennas?](https://ieeexplore.ieee.org/document/10054084/)  
+# Code Introduction
+WMMSE.m : The main function for [the WMMSE algorithm](https://ieeexplore.ieee.org/document/5756489/).  
+R-WMMSE.m : The main function for [the R-WMMSE algorithm](https://ieeexplore.ieee.org/document/10054084/).    
+find_U1.m : The function for finding the U in each iteration of the WMMSE algorithm.  
+find_W1.m : The function for finding the W in each iteration of the WMMSE algorithm.  
+find_V1.m : The function for finding the V in each iteration of the WMMSE algorithm.  
+sumrate.m : The function for computing the sum rate in the WMMSE algorithm.  
+Test_R_WMMSE.m : This is a function used to test R_WMMSE performance, enter the required parameters and the function would return the number of iterations, running time and sum rate information  
+
+find_U.m : The function for finding the U in each iteration of the R-WMMSE algorithm.  
+find_W1.m : The function for finding the W in each iteration of the R-WMMSE algorithm.  
+find_X.m : The function for finding the X in each iteration of the R-WMMSE algorithm.  
+sumrate.m : The function for computing the sum rate in the R-WMMSE algorithm.  
+Test_WMMSE.m : This is a function used to test WMMSE performance, enter the required parameters and the function would return the number of iterations, running time and sum rate information  
+
+Test.m : This script is used to access the performance gap between the two algorithms WMMSE and R-WMMSE. The indicators include running time, number of iterations and final sum rate. Currently this script only supports the simulation scenario of a single base station.
+# Result
+Run Test.m in matlab and get the following figures, one for running time and the other for sum rate:  
+![Running time comparison](/figs/result1.png)  
+![Sum rate comparison](/figs/result2.png)