Changeset 5057

Timestamp:

09/17/07 16:07:17 (6 years ago)

Author:

jgaeddert

Message:

fixing interpolator filter prototype; updating documentation

Location:

components/Interpolator/branches/Interpolator-metadata

Files:

• Interpolator.cpp (modified) (2 diffs)
• documentation.txt (modified) (1 diff)

components/Interpolator/branches/Interpolator-metadata/Interpolator.cpp

@@ -217 +217 @@
                   << std::endl;
 
-        SigProc::DesignRRCFilter(M, m, beta, h, len_h);
+        len_h = 2*M*m + 1;
+        h = new float[len_h];
+        SigProc::DesignRRCFilter(M, m, beta, h);
 
         i_filter = new SigProc::fir_filter(h, len_h);
@@ -244 +246 @@
         }
 
-        metadata->sampling_frequency *= float(M);
+        // Adjust MetaData tags
+        if ( createDynamicFilter )
+            metadata->signal_bandwidth *= (float) ( metadata->sampling_frequency * (1+beta) );
+        else
+            metadata->signal_bandwidth *= metadata->sampling_frequency;
+
+        metadata->sampling_frequency *= (float) M;
+
 
         unsigned int len = I_in->length();

components/Interpolator/branches/Interpolator-metadata/documentation.txt

@@ -41 +41 @@
 dynamic filter prototype (e.g. rrcos) described in the following properties.
 
+\subsection prop_pulse_shape Pulse Shape (DCE:e65ba870-4c11-11dc-9470-00123f63025f)
+Pulse shape to use in filter prototype.  Can be one of the following:
+    - "rrcos" (square root-raised cosine)
+
+This component should eventually support the following prototypes:
+    - "rcos" (raised cosine)
+    - "gaussian"
+    - "hamming"
+    - "square"
+
+\subsection prop_m Symbol Delay (DCE:f6843fdc-4c11-11dc-b0be-00123f63025f)
+Symbol delay
+
+\subsection prop_beta Excess Bandwidth Factor (DCE:fed01972-4c11-11dc-8d59-00123f63025f)
+Excess bandwidth factor
+
 \section interfaces Interfaces
 
 \section dependencies Software build dependencies
   - SigProc
-  - Standard Interfaces
+  - Standard Interfaces (with meta data)
 
 \section algorithm Detailed Description of Algorithm