function lc = lcDefVDSLDMT;
%% ===========================================================================
%lcDefDMT - Sets up the lincode description structure for DMT
% Returns:      lc	The linecode structure
%
% Example(s):
%
% Algorithmic details:
%   Fill in the modemdef structure according to default parameters and input
%   parameters.
%
% Reference:
%    FSAN xDSL simulation tool manual
%% ===========================================================================

%% ===========================================================================
% Copyright (C):                                        
%       1999-2000 by Telia Research AB, Lulea, Sweden;                
%       2000-2001 by FTW, Wien, Austria;  
%                                                         All rights reserved.
% Project       : FSAN duplex model
% Author(s)     : Tomas Nordstrom (Tomas.Nordstrom@FTW.at)
%               : Daniel Bengtsson (Daniel.J.Bengtsson@Telia.se)
%
% CVS:       $Id: lcDefVDSLDMT.m,v 1.7 2002/06/05 15:28:46 tono Exp $
%% ===========================================================================
% Change History
%      1999-10-11 (ToNo) Created
%      2000-01-12 (Dab)  lc function changed
%      2000-04-04 (Dab)  Added signal margin
%      2001-07-03 (ToNo) Added active tones
%      2001-09-12 (ToNo) Add support for "Maximum aggregate transmit power"
%% ===========================================================================

lc.name           	= 'VDSL-DMT';

% Default Parameter values

% get the margin
lc.param.signal_margin  = 0;
lc.param.xtalk_margin   = 6;
lc.param.refSNR         = 9.8;
lc.param.codingGain     = 3.5;
lc.param.SNRloss        = 0;
lc.param.Px             = 11.5;
lc.param.PxDown         = 11.5;
lc.param.PxUp           = 11.5;

% Param digital
lc.param.dmt.df	        = 4.3125e3;   % carrier spacing 
lc.param.dmt.carriers   = 4096;       % number of carriers used
lc.param.fs             = lc.param.dmt.df*lc.param.dmt.carriers*2; % Sampling frequency
lc.param.dmt.cp         = 640;        % cyclic prefix value (actually all extensions)
lc.param.dmt.cs         = 0;          % cyclic suffix value
lc.param.dmt.my         = 0;          % sampels used for windowing
lc.param.dmt.beta       = 0;          % sampels used for pulse shaping

% Set up active tones (default is set to plan 997)
% 997 tones 32         695        1182        1634        2782
lc.param.dmt.tonesus    = [   699:1178   1638:2782]; % Upstream active tones
lc.param.dmt.tonesds    = [32:691  1186:1630];       % Downstream active tones
% 998 tones 32         869        1205        1971        2782
%lc.param.dmt.tonesus    = [   874:1200   1976:2782]; % Upstream active tones
%lc.param.dmt.tonesds    = [32:865  1210:1966];       % Downstream active tones

lc.param.dmt.srate      = 4e3;           % DMT symbol rate
lc.param.constellation  = (2:11);     % bit constellation supported
lc.param.SNRMax         = 46;         % 11*3 + (9.8+6-3.5)=45.3

lc.param.efficiencyLoss = 1-2*lc.param.dmt.carriers./ ...
    (lc.param.dmt.cp+lc.param.dmt.cs+lc.param.dmt.my+lc.param.dmt.beta+lc.param.dmt.carriers*2);
lc.param.alpha           = 0;

lc.calcRate 		= 'calcResultDMT';
lc.lcPrint 		= 'lcPrintDMT';