VPL Infotech & Consultants



CDMA Trainer (CDMAL)




CDMA Trainer (CDMAL) provides a basic understanding of the concepts behind CDMA, and various issues that need to be considered in the design of a DSSS system. These include the Usage of pseudorandom (PN) codes and digital modulations BPSK. CDMA Trainer (CDMAL) has digital modulation & demodulation along with direct sequence spread spectrum (DSSS) generation and decoding, data signals, zero random bit signal generation.

Specifications
  • It uses the VLSI Technology
  • On Board Pseudo-Noise (PN) Code generator bits - 16 bits
  • On Board Digital Data generator - 1 Nos.
    • Word Length - 8 Bits.
    • Bit Clock Frequency - 240 Khz
    • Data Format - NRZ
  • Modulation Carrier Frequency of 1.44 MHz.
  • Spreading code mixer and Unipolar to Bipolar Converter section
  • Modulator type : Coherent Binary PSK Modulator
  • Demodulator Type : Coherent Detector
  • Low pass filter cutoff frequency : 240 KHz.
  • Code dispreading : Using EX-NOR gate
  • Power supply requirement : 230V AC, 50 Hz.