before new database
This commit is contained in:
Silas Oettinghaus
@@ -42,6 +42,7 @@ classdef FFE < handle
|
||||
dc_level_avg_bufferlength_a2
|
||||
dc_level_update_blocklength_a2
|
||||
dc_smoothing_a2
|
||||
dc_level_decision_mode_a2
|
||||
dc_level_weights_a2
|
||||
|
||||
% Adaptive DC-tracking loop
|
||||
@@ -119,6 +120,7 @@ classdef FFE < handle
|
||||
options.dc_level_avg_bufferlength_a2 = 0;
|
||||
options.dc_level_update_blocklength_a2 = 0;
|
||||
options.dc_smoothing_a2 = 0;
|
||||
options.dc_level_decision_mode_a2 = "residual";
|
||||
options.dc_level_weights_a2 = 0;
|
||||
|
||||
options.dc_tracking_mu = 0;
|
||||
@@ -170,6 +172,11 @@ classdef FFE < handle
|
||||
obj.dc_level_avg_bufferlength_a2 = floor(obj.dc_level_avg_bufferlength_a2);
|
||||
obj.dc_level_update_blocklength_a2 = floor(obj.dc_level_update_blocklength_a2);
|
||||
obj.dc_smoothing_a2 = min(max(obj.dc_smoothing_a2,0),1);
|
||||
obj.dc_level_decision_mode_a2 = string(obj.dc_level_decision_mode_a2);
|
||||
if ~any(obj.dc_level_decision_mode_a2 == ["residual", "tracked_levels"])
|
||||
builtin("error","FFE:InvalidA2DecisionMode", ...
|
||||
"dc_level_decision_mode_a2 must be 'residual' or 'tracked_levels'.");
|
||||
end
|
||||
obj.dc_tracking_buffer_len = floor(obj.dc_tracking_buffer_len);
|
||||
obj.ffe_update_buffer_len = floor(obj.ffe_update_buffer_len);
|
||||
obj.a2_level_weight_max = max(obj.a2_level_weight_max,0);
|
||||
@@ -357,6 +364,8 @@ classdef FFE < handle
|
||||
"A2 level-dependent MPI suppression requires obj.constellation to be set.");
|
||||
end
|
||||
|
||||
dc_level_decision_mode_a2 = obj.dc_level_decision_mode_a2;
|
||||
dc_level_track_decision_a2 = dc_level_decision_mode_a2 == "tracked_levels";
|
||||
n_levels = numel(constellation);
|
||||
if isscalar(obj.dc_level_weights_a2)
|
||||
dc_level_weight_by_level = repmat(obj.dc_level_weights_a2,n_levels,1);
|
||||
@@ -396,6 +405,7 @@ classdef FFE < handle
|
||||
obj.debug_struct.dc_level_weight = NaN(1,n_symbols_debug);
|
||||
obj.debug_struct.dc_level_valid_count = NaN(1,n_symbols_debug);
|
||||
obj.debug_struct.dc_level_symbol_idx = NaN(1,n_symbols_debug);
|
||||
obj.debug_struct.dc_level_decision_level = NaN(1,n_symbols_debug);
|
||||
obj.debug_struct.dc_level_y_raw = NaN(1,n_symbols_debug);
|
||||
|
||||
if training
|
||||
@@ -419,6 +429,7 @@ classdef FFE < handle
|
||||
dc_level_weight = 0;
|
||||
dc_level_valid_count = 0;
|
||||
dc_level_symbol_idx = NaN;
|
||||
dc_level_decision_level = NaN;
|
||||
|
||||
U = x(obj.order+sample-1:-1:sample);
|
||||
if dc_avg_enabled
|
||||
@@ -444,33 +455,60 @@ classdef FFE < handle
|
||||
symbol_idx = NaN;
|
||||
else
|
||||
[~,symbol_idx] = min(abs(d_hat(symbol) - constellation));
|
||||
dc_level_decision_level = constellation(symbol_idx);
|
||||
end
|
||||
else
|
||||
if ~always_ideal_decision
|
||||
[~,symbol_idx] = min(abs(y(symbol) - constellation)); % decision for closest constellation point
|
||||
if dc_level_enabled && dc_level_track_decision_a2
|
||||
% Tracked-level A2 moves the decision constellation; y itself stays unchanged.
|
||||
dc_level_ramp_by_level = min(dc_level_valid_count_by_level / dc_level_buffer_len_a2,1);
|
||||
dc_level_decision_constellation = constellation + ...
|
||||
dc_level_weight_by_level .* dc_level_ramp_by_level .* dc_level_mpi_est_by_level;
|
||||
[~,symbol_idx] = min(abs(y(symbol) - dc_level_decision_constellation));
|
||||
dc_level_decision_level = dc_level_decision_constellation(symbol_idx);
|
||||
else
|
||||
[~,symbol_idx] = min(abs(y(symbol) - constellation)); % decision for closest constellation point
|
||||
dc_level_decision_level = constellation(symbol_idx);
|
||||
end
|
||||
d_hat(symbol,1) = constellation(symbol_idx);
|
||||
else
|
||||
d_hat(symbol,1) = d(symbol);
|
||||
[~,symbol_idx] = min(abs(d_hat(symbol) - constellation));
|
||||
dc_level_decision_level = constellation(symbol_idx);
|
||||
end
|
||||
end
|
||||
|
||||
dc_level_symbol_idx = symbol_idx;
|
||||
if dc_level_enabled
|
||||
mpi_err = y_raw - d_hat(symbol);
|
||||
dc_level_mpi_est = dc_level_mpi_est_by_level(symbol_idx);
|
||||
dc_level_valid_count = dc_level_valid_count_by_level(symbol_idx);
|
||||
dc_level_weight = dc_level_weight_by_level(symbol_idx) * ...
|
||||
min(dc_level_valid_count / dc_level_buffer_len_a2,1);
|
||||
y(symbol,1) = y_raw - dc_level_weight * dc_level_mpi_est;
|
||||
|
||||
if training
|
||||
d_hat(symbol,1) = d(symbol);
|
||||
if dc_level_track_decision_a2
|
||||
dc_level_buffer_value = y_raw;
|
||||
y(symbol,1) = y_raw;
|
||||
if isnan(dc_level_decision_level)
|
||||
dc_level_decision_level = constellation(symbol_idx) + ...
|
||||
dc_level_weight * dc_level_mpi_est;
|
||||
end
|
||||
else
|
||||
if ~always_ideal_decision
|
||||
[~,symbol_idx] = min(abs(y(symbol) - constellation));
|
||||
d_hat(symbol,1) = constellation(symbol_idx);
|
||||
else
|
||||
mpi_err = y_raw - d_hat(symbol);
|
||||
dc_level_buffer_value = mpi_err;
|
||||
y(symbol,1) = y_raw - dc_level_weight * dc_level_mpi_est;
|
||||
|
||||
if training
|
||||
d_hat(symbol,1) = d(symbol);
|
||||
else
|
||||
if ~always_ideal_decision
|
||||
[~,symbol_idx] = min(abs(y(symbol) - constellation));
|
||||
d_hat(symbol,1) = constellation(symbol_idx);
|
||||
dc_level_decision_level = constellation(symbol_idx);
|
||||
else
|
||||
d_hat(symbol,1) = d(symbol);
|
||||
[~,symbol_idx] = min(abs(d_hat(symbol) - constellation));
|
||||
dc_level_decision_level = constellation(symbol_idx);
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
@@ -488,10 +526,10 @@ classdef FFE < handle
|
||||
dc_level_buffer_valid_count_by_level(dc_level_symbol_idx) - 1;
|
||||
end
|
||||
|
||||
if isfinite(mpi_err)
|
||||
dc_level_err_buffer(dc_level_symbol_idx,dc_level_err_buffer_pos) = mpi_err;
|
||||
if isfinite(dc_level_buffer_value)
|
||||
dc_level_err_buffer(dc_level_symbol_idx,dc_level_err_buffer_pos) = dc_level_buffer_value;
|
||||
dc_level_err_sum_by_level(dc_level_symbol_idx) = ...
|
||||
dc_level_err_sum_by_level(dc_level_symbol_idx) + mpi_err;
|
||||
dc_level_err_sum_by_level(dc_level_symbol_idx) + dc_level_buffer_value;
|
||||
dc_level_buffer_valid_count_by_level(dc_level_symbol_idx) = ...
|
||||
dc_level_buffer_valid_count_by_level(dc_level_symbol_idx) + 1;
|
||||
else
|
||||
@@ -508,6 +546,11 @@ classdef FFE < handle
|
||||
dc_level_mpi_est_by_level(dc_level_symbol_idx) = ...
|
||||
dc_level_err_sum_by_level(dc_level_symbol_idx) / ...
|
||||
dc_level_valid_count_by_level(dc_level_symbol_idx);
|
||||
if dc_level_track_decision_a2
|
||||
dc_level_mpi_est_by_level(dc_level_symbol_idx) = ...
|
||||
dc_level_mpi_est_by_level(dc_level_symbol_idx) - ...
|
||||
constellation(dc_level_symbol_idx);
|
||||
end
|
||||
end
|
||||
else
|
||||
dc_level_valid_count_by_level = dc_level_buffer_valid_count_by_level;
|
||||
@@ -516,6 +559,11 @@ classdef FFE < handle
|
||||
dc_level_mpi_est_by_level(dc_level_has_valid) = ...
|
||||
dc_level_err_sum_by_level(dc_level_has_valid) ./ ...
|
||||
dc_level_valid_count_by_level(dc_level_has_valid);
|
||||
if dc_level_track_decision_a2
|
||||
dc_level_mpi_est_by_level(dc_level_has_valid) = ...
|
||||
dc_level_mpi_est_by_level(dc_level_has_valid) - ...
|
||||
constellation(dc_level_has_valid);
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
@@ -675,6 +723,7 @@ classdef FFE < handle
|
||||
obj.debug_struct.dc_level_weight(1,symbol) = dc_level_weight;
|
||||
obj.debug_struct.dc_level_valid_count(1,symbol) = dc_level_valid_count;
|
||||
obj.debug_struct.dc_level_symbol_idx(1,symbol) = dc_level_symbol_idx;
|
||||
obj.debug_struct.dc_level_decision_level(1,symbol) = dc_level_decision_level;
|
||||
obj.debug_struct.dc_level_y_raw(1,symbol) = y_raw;
|
||||
|
||||
if training
|
||||
|
||||
Reference in New Issue
Block a user