function fig = visualize_multi_tx_waveform(t, Timing, fc, f_start, Slope, tx_mask, TotalNumChirps, mimoMode, NumTx)
    fig = figure('Name', 'Multi-Chirp & MIMO Modulation', 'Position', [150, 150, 1100, 750]);
    
    T_chirp = Timing.IdleTime + Timing.RampEndTime;
    NumChirpsToPlot = min(TotalNumChirps, 4); 
    
    plot_idx = (t <= NumChirpsToPlot * T_chirp);
    t_plot = t(plot_idx);
    tx_mask_plot = tx_mask(plot_idx);
    
    t_mod = mod(t_plot, T_chirp);
    t_ramp = t_mod - Timing.IdleTime;
    
    inst_freq_theoretical = f_start + Slope * t_ramp;
    inst_freq_masked = inst_freq_theoretical;
    inst_freq_masked(tx_mask_plot == 0) = NaN; 
    
    % =========================================================
    % [Subplot 1] 상단: 시간에 따른 주파수 파형
    % =========================================================
    subplot(2, 1, 1);
    
    y_min = (f_start / 1e9) - 0.25;
    y_max = (f_start / 1e9) + (Slope * Timing.RampEndTime / 1e9) + 0.1;

    plot(t_plot * 1e6, inst_freq_masked / 1e9, 'b', 'LineWidth', 2);
    grid on; hold on;
    
    title(sprintf('Continuous Multi-Chirp Sequence (Showing %d of %d Chirps)', NumChirpsToPlot, TotalNumChirps), 'FontSize', 12);
    ylabel('Absolute Frequency (GHz)', 'FontSize', 11);
    
    ylim([y_min, y_max]);
    if ~isempty(t_plot)
        xlim([0, max(t_plot)*1e6]);
    else
        xlim([0, 1]); % fallback range when no data
    end
    
    f_valid_start = f_start + (Slope * Timing.AdcStartTime);
    f_valid_end   = f_start + (Slope * (Timing.AdcStartTime + Timing.AdcSampTime));
    valid_bandwidth = f_valid_end - f_valid_start;

    info_str = {
        sprintf('▶ Valid Start Freq : %.4f GHz', f_valid_start / 1e9), ...
        sprintf('▶ Center Freq      : %.4f GHz', fc / 1e9), ...
        sprintf('▶ Valid End Freq   : %.4f GHz', f_valid_end / 1e9), ...
        sprintf('▶ Transmit Bandwidth : %.4f GHz', valid_bandwidth / 1e9), ...
        sprintf('▶ Total Gen Chirps : %d', TotalNumChirps)
    };
    text(0.02, 0.96, info_str, 'Units', 'normalized', 'FontSize', 10, 'FontWeight', 'bold', 'BackgroundColor', [1 1 1 0.85], 'EdgeColor', 'k', 'VerticalAlignment', 'top', 'Margin', 5);

    guide_line_args = {'Color', [0 0 0.5], 'LineStyle', '--', 'LineWidth', 1}; 
    for i = 0:NumChirpsToPlot
        plot([i * T_chirp * 1e6, i * T_chirp * 1e6], [y_min, y_max], guide_line_args{:});
    end

    draw_dim_arrow = @(x1, x2, y, label_str) ...
        [plot([x1, x2], [y, y], 'k-', 'LineWidth', 1.2), ... 
         fill([x1, x1 + min(0.6, (x2-x1)*0.35), x1 + min(0.6, (x2-x1)*0.35)], [y, y + 0.015, y - 0.015], 'k', 'EdgeColor', 'none'), ...
         fill([x2, x2 - min(0.6, (x2-x1)*0.35), x2 - min(0.6, (x2-x1)*0.35)], [y, y + 0.015, y - 0.015], 'k', 'EdgeColor', 'none'), ...
         text((x1+x2)/2, y + 0.03, label_str, 'HorizontalAlignment', 'center', 'VerticalAlignment', 'bottom', 'FontSize', 9, 'FontWeight', 'bold', 'BackgroundColor', 'w', 'EdgeColor', 'k')];

    y_pri = y_min + 0.08; 
    pri_us = T_chirp * 1e6;
    prf_khz = (1 / T_chirp) / 1e3;
    pri_prf_label = sprintf('PRI: %.1f \\mus\nPRF: %.1f kHz', pri_us, prf_khz);
    draw_dim_arrow(0, pri_us, y_pri, pri_prf_label);
    hold off;

    % =========================================================
    % [Subplot 2] 하단: MIMO 방식 통합형 Active TX & Phase 맵
    % =========================================================
    subplot(2, 1, 2);
    hold on; grid on;
    
    % --- [핵심 추가]: TX 개수에 맞춘 고유 색상 팔레트 생성 ---
    % lines() 함수는 구분이 명확하고 세련된 색상 배열을 반환합니다.
    tx_colors = lines(NumTx); 
    
    for tx = 1:NumTx
        plot([0, NumChirpsToPlot * T_chirp * 1e6], [tx, tx], ':', 'Color', [0.8 0.8 0.8], 'HandleVisibility', 'off');
    end
    
    for i = 0 : NumChirpsToPlot - 1
        t_center_us = (i + 0.5) * T_chirp * 1e6;
        
        if strcmpi(mimoMode, 'TDM')
            active_tx_list = mod(i, NumTx) + 1; 
        elseif strcmpi(mimoMode, 'DDMA')
            active_tx_list = 1:NumTx;           
        else
            active_tx_list = 1;                 
        end
        
        for tx = 1:NumTx
            % 현재 처리 중인 TX 안테나의 고유 색상 추출
            current_color = tx_colors(tx, :);
            
            if ismember(tx, active_tx_list)
                if strcmpi(mimoMode, 'DDMA')
                    phase_rad = 2 * pi * (tx - 1) * i / NumTx;
                    phase_deg = mod(rad2deg(phase_rad), 360);
                else
                    phase_deg = 0; 
                end
                
                % 활성화: 해당 안테나의 색상으로 꽉 채워진 원
                plot(t_center_us, tx, 'o', 'MarkerSize', 12, 'MarkerFaceColor', current_color, 'MarkerEdgeColor', current_color, 'HandleVisibility', 'off');
                
                text_offset_us = T_chirp * 1e6 * 0.08; 
                text(t_center_us + text_offset_us, tx, sprintf('%d^\\circ', round(phase_deg)), ...
                     'VerticalAlignment', 'middle', 'HorizontalAlignment', 'left', ...
                     'FontSize', 9, 'FontWeight', 'bold', 'Color', current_color);
            else
                % 비활성화: 해당 안테나의 색상 테두리를 가진 비워진 원
                plot(t_center_us, tx, 'o', 'MarkerSize', 12, 'MarkerFaceColor', 'w', 'MarkerEdgeColor', current_color, 'HandleVisibility', 'off');
            end
        end
    end
    
    title(sprintf('%s Active TX Antenna & Phase Map', upper(mimoMode)), 'FontSize', 12);
    ylabel('TX Antenna', 'FontSize', 11);
    
    yticks(1:NumTx);
    % Y축 라벨에도 텍스트 색상을 입혀 직관성 극대화 (선택 사항)
    % yticklabels(arrayfun(@(x) sprintf('\\color[rgb]{%f,%f,%f}TX %d', tx_colors(x,1), tx_colors(x,2), tx_colors(x,3), x), 1:NumTx, 'UniformOutput', false));
    yticklabels(arrayfun(@(x) sprintf('TX %d', x), 1:NumTx, 'UniformOutput', false));
    ylim([0.5, NumTx + 0.5]);
    
    % --- [범례 수정]: 중립적인 색상(다크 그레이)으로 상태의 개념만 표시 ---
    neutral_color = [0.3 0.3 0.3];
    h_on = plot(NaN, NaN, 'o', 'MarkerSize', 10, 'MarkerFaceColor', neutral_color, 'MarkerEdgeColor', neutral_color, 'DisplayName', 'Active');
    h_off = plot(NaN, NaN, 'o', 'MarkerSize', 10, 'MarkerFaceColor', 'w', 'MarkerEdgeColor', neutral_color, 'DisplayName', 'Inactive');
    legend([h_on, h_off], 'Location', 'best', 'FontSize', 10, 'Box', 'on');
    
    xlabel('Time (\mus)', 'FontSize', 11);
    xlim([0, max(t_plot)*1e6]);
    
    y_lims_bottom = ylim;
    for i = 0:NumChirpsToPlot
        plot([i * T_chirp * 1e6, i * T_chirp * 1e6], y_lims_bottom, guide_line_args{:}, 'HandleVisibility', 'off');
    end
    
    hold off;
end