Measuring Handoff Waveform Quality

 Last updated: October 28, 2004

 The reverse channel of cdma2000 differs from IS-95's because there are multiple channels transmitted on the reverse link due to its new introduced radio configurations (radio configuration 3 and above). To measure IS-95 style waveform quality of the pilot signal (single-coded rho), there is one very short period of time, (during a handoff) when only the pilot channel is transmitting. This measurement can be used to perform the tests as described in the TIA/EIA-98-E standard.

 We recommend to use the Keysight's multi-coded rho measurement to perform the tests as specified in TIA/EIA-98-E standard (see Measuring Waveform Quality/Code Domain Power ) since it offers the best measure of performance for cdma2000 systems while multiple code channels are active and restores the ability to test the whole signal.

 

 General Procedure

  1.  
  2. Establish a call with the mobile station with Radio Config set to (Fwd3, Rvs3) or above (see How Do I Set Up an IS-2000 Call? ).
  3.  Press the Measurement selection key.
  4.  Turn the knob to highlight the Handoff Waveform Quality measurement and press the knob.
  5.  Press the Handoff Waveform Quality Setup ( F1 ) key to access the Handoff Waveform Quality Setup menu.
  6.  Set the measurement parameters as needed for your measurement situation.
  7.  Press the Close Menu ( F6 ) key.
  8.  

    Press the START SINGLE key. A typical display is shown below.

 Each waveform quality measurement returns a number of measurements which includes numeric rho. In addition to rho, it also provides the following measurements, calculated from the same data:

 

Related Topics
 

Handoff Waveform Quality Measurement Description

 Programming a Handoff Waveform Quality Measurement

 Handoff Waveform Quality Measurement Troubleshooting