Research Article

Doppler Spread Estimation Based on Machine Learning for an OFDM System

Algorithm 1

Overall machine learning algorithm.
1 Input:
2  which denotes the data of the averaged PSD sequences
3  which denotes the data of the target Doppler
4 shift index sequences
5
6 Fixed Parameters:
7 
8
9 Weight Matrix Initialization:
10 
11 
12 
13 
14 
15
16 for do
17 for do
18  
19  
20  Forward Signal Propagation (Algorithm 2)
21  Backward Error Propagation (Algorithm 4)
22  Parameter Update (Algorithm 6)
23 end
24 end