--- a/src/lr-wpan/model/lr-wpan-spectrum-value-helper.h	Fri Apr 25 18:58:47 2014 +0200
+++ b/src/lr-wpan/model/lr-wpan-spectrum-value-helper.h	Fri Apr 25 19:02:57 2014 +0200
@@ -54,12 +54,15 @@
 
   /**
    * \brief total average power of the signal is the integral of the PSD
-   * \param power spectral density
+   * \param psd spectral density
    * \return total power (using composite trap. rule to numerally integrate
    */
   static double TotalAvgPower (Ptr<const SpectrumValue> psd);
 
 private:
+  /**
+   * A scaling factor for the noise power.
+   */
   double m_noiseFactor;
 
 };