F_OFDM_modulate_proto_filt

 F_OFDM_modulate_proto_filt modulates the F-OFDM prototype filter on the desired frequency bins  [1, 2].

 function [ modulated_filters ] = proto_f_eq( proto_filt, Para )

 Input arguments:

   proto_filt: F_OFDM prototype filter . Size: vector [1, Para.L]

   Para: structure containing the modulation parameters.

 Outputs arguments:

   modulated_filters: prototype filters centred on the centre frequency bins of each sub-band. 
                      Size: matrix [Para.filt_L, Para.NbSubBands]

0001 function [ modulated_filters ] = F_OFDM_modulate_proto_filt( proto_filt, Para )
0002 % F_OFDM_modulate_proto_filt modulates the F-OFDM prototype filter on the desired frequency bins  [1, 2].
0003 %
0004 % function [ modulated_filters ] = proto_f_eq( proto_filt, Para )
0005 %
0006 % Input arguments:
0007 %
0008 %   proto_filt: F_OFDM prototype filter . Size: vector [1, Para.L]
0009 %
0010 %   Para: structure containing the modulation parameters.
0011 %
0012 % Outputs arguments:
0013 %
0014 %   modulated_filters: prototype filters centred on the centre frequency bins of each sub-band.
0015 %                      Size: matrix [Para.filt_L, Para.NbSubBands]
0016 
0017 %References:
0018 %    [1] 3GPP R1-165425 'f-OFDM scheme and filter design'
0019 %    [2] 3GPP R1-166999 'Detailed configuration of f-OFDM and W-OFDM for LLS evaluation'
0020 
0021 % This file is part of WaveComBox: www.wavecombox.com and is distributed under the terms of the MIT license. See accompanying LICENSE file.
0022 % Original author: Mathieu Van Eeckhaute, September 26, 2018.
0023 % Contributors:
0024 % Change log:
0025 
0026 f0 = mean(Para.SubBandSCset-1, 1);
0027 modulated_filters = zeros(Para.L,Para.NsubBands);
0028 n = -floor(Para.L/2):floor(Para.L/2);
0029 for kBand = 1:Para.NsubBands
0030     modulated_filters(:, kBand) = proto_filt.*exp(1j*2*pi*f0(kBand).*n/Para.nSubcarriers);
0031 end
0032 
0033 end
0034