Experimental analysis and investigation of WCDMA link in terms of EVM using vector signal transceiver (VST) 5644R & LabVIEW 2012
Gaurav Soni · 2016
WCDMA is the most dominant 3rdgeneration Cellular/Mobile Technology which is well known for providing wider bandwidth and high data rate for various mobile data and Voice services. In this work proposed WCDMA link is designed in LabVIEW 2012 and investigated on the hardware platform of VST 5644R experimentally. The modulation scheme used for the investigating WCDMA link on VST platform is BPSK/QPSK. Here the results are measured in terms of EVM Value (Error Vector Magnitude). The results have shown that WCDMA Link based on QPSK scheme with `long' scrambling code and scrambling factor of 128 performs much better as compare to that using `short' scrambling code. The experimental results of EVM obtained using BPSK/QPSK at spreading factor of 128 is 0.06 % which claims maximum Signal to noise ratio (SNR) of 64.44dB which shows the best ever WCDMA link performance claimed experimentally based on VST 5644R device.