Changeset 4505

Timestamp:

07/24/07 16:24:56 (6 years ago)

Author:

jgaeddert

Message:

updating SigProc? documentation

Location:

SigProc/trunk/SigProc

Files:

• documentation.txt (modified) (1 diff)
• modem.cpp (modified) (1 diff)

SigProc/trunk/SigProc/documentation.txt

@@ -53 +53 @@
 \endcode
 
+\subsection ExampleRRCFilter Example: design a root raised-cosine filter
+\code
+// A simple SigProc example: examplerrcfilter.cpp
+
+#include "sigproc/SigProc.h"
+
+int main() {
+    unsigned int h_len;     // filter length
+    float * h;              // array for filter coefficients
+
+    unsigned int k(4);      // samples per symbol
+    unsigned int m(3);      // filter delay (symbols)
+    float beta(0.3);        // excess bandwidth factor
+    
+    // Calculate filter coefficients
+    SigProc::DesignRRCFilter(k, m, beta, h, h_len);
+
+    // Print filter coefficients to the screen
+    for (unsigned int i=0; i<h_len; i++) 
+        printf("h[%d] = %f\n", i, h[i]);
+    
+    // Clean up memory
+    delete [] h;
+    
+    return 0;
+}   
+\endcode
+
+Compile and run
+\verbatim
+$ g++ -lsigproc examplerrcfilter.cpp -o ExampleRRCFilter
+$ ./ExampleRRCFilter
+\endverbatim
+
 \section status Status and History
 

SigProc/trunk/SigProc/modem.cpp

@@ -233 +233 @@
         break;
     default:
-        std::cerr << "ERROR: Unknown symbol for 16-PSK: " << symbol_in << std::endl;
+        std::cerr << "ERROR: Unknown symbol for 16-QAM: " << symbol_in << std::endl;
         throw 0;
     }