msorthogonalspreadinginitialization.m

来自「对于CDMA2000 1X反向信道仿真」· M 代码 · 共 66 行

%==========================================================================
% MS_OrthogonalSpreading_Initialization.m
%==========================================================================
% 根据信道类型设置Walsh码的长度和序号
switch xChannelType
    case 1
        % 反向基本信道
        xWalshCodeLength=16;
        xWalshCodeIndex=4;
    case 2
        %反向补充信道1
        xWalshCodeLength=2;
        xWalshCodeIndex=1;
    case 3
        %反向补充信道2
        xWalshCodeLength=4;
        xWalshCodeIndex=2;
    case 4
        %反向专用控制信道
        xWalshCodeLength=16;
        xWalshCodeIndex=8;
    case 5
        %反向公共控制信道
        xWalshCodeLength=8;
        xWalshCodeIndex=2;
    case 6
        %反向导频信道
        xWalshCodeLength=32;
        xWalshCodeIndex=0;
    case 7
        %反向增强接入信道
        xWalshCodeLength=8;
        xWalshCodeIndex=2;
    otherwise
        error('Error:Invalid Channel Type for Radio Configuration 3 in cdma2000 Mobile Station block <Spreading and Modulation>');
end

% 根据无线配置设置输入信号的重复因子
% 只支持RC3和RC4
switch xRC
    case 3
        switch xFrameLength
            case 6120
                xRepetitionCount=fix((1228.8*xFrameDuration)/12288);
            case 3048
                xRepetitionCount=fix((1228.8*xFrameDuration)/12288);
            case 1512
                xRepetitionCount=fix((1228.8*xFrameDuration)/6144);
            case 744
                xRepetitionCount=fix((1228.8*xFrameDuration)/3072);
            case 360
                xRepetitionCount=fix((1228.8*xFrameDuration)/1536);
            case 172
                xRepetitionCount=fix((1228.8*xFrameDuration)/1536);
            case 80
                xRepetitionCount=fix((1228.8*xFrameDuration)/1536);
            case 40
                xRepetitionCount=fix((1228.8*xFrameDuration)/1536);
            case 16
                xRepetitionCount=fix((1228.8*xFrameDuration)/1536);
            case 24
                xRepetitionCount=fix((1228.8*xFrameDuration)/384);
            otherwise
                error('Error:Invalid Frame Length for Radio Configuration 3 in cdma2000 Mobile Station block <Spreading and Modulation>');
        end
end