W_OFDM_RX_window_design

 W_OFDM_RX_window_design creates the window used at the w-ofdm receiver  [1, 2].

 function [ F_window ] = W_OFDM_RX_window_design( Para )

 Input arguments:

   Para: structure containing the modulation parameters.

 Outputs arguments:

   F_window: W-OFDM Rx window. Size: vector [2*Para.win_L + Para.nSubcarriers, Para.Ns]

0001 function [ F_window ] = W_OFDM_RX_window_design( Para )
0002 % W_OFDM_RX_window_design creates the window used at the w-ofdm receiver  [1, 2].
0003 %
0004 % function [ F_window ] = W_OFDM_RX_window_design( Para )
0005 %
0006 % Input arguments:
0007 %
0008 %   Para: structure containing the modulation parameters.
0009 %
0010 % Outputs arguments:
0011 %
0012 %   F_window: W-OFDM Rx window. Size: vector [2*Para.win_L + Para.nSubcarriers, Para.Ns]
0013 
0014 %References:
0015 %    [1] 3GPP R1-165425 'f-OFDM scheme and filter design'
0016 %    [2] 3GPP R1-166999 'Detailed configuration of f-OFDM and W-OFDM for LLS evaluation'
0017 
0018 % This file is part of WaveComBox: www.wavecombox.com and is distributed under the terms of the MIT license. See accompanying LICENSE file.
0019 % Original author: Mathieu Van Eeckhaute, September 26, 2018.
0020 % Contributors:
0021 % Change log:
0022 
0023 %Window generation, Meyer RRC window [1, 2]
0024 k_abs = ((1-Para.alpha_win)*Para.L/2:(1+Para.alpha_win)*Para.L/2-1);
0025 k_v =(k_abs-(1-Para.alpha_win)*Para.L/2)/(Para.alpha_win*Para.L);
0026 v = k_v.^4.*(35-84*k_v+70*k_v.^2 - 20*k_v.^3);
0027 w_R = 1/2*(1+cos(pi.*(1-v)));
0028 w_F = 1-w_R;
0029 % %RX windowing [1]
0030 F_window = ones(Para.nSubcarriers+2*Para.win_L, 1);
0031 F_window(1:2*Para.win_L) = w_R;
0032 F_window(end-2*Para.win_L+1:end) = w_F;
0033 F_window = repmat(F_window, 1, Para.Ns);
0034 
0035 end
0036