IT-4209 CDMA Transceiver Trainer

Experiments Included:

  • Study of Direct Sequence Spread Spectrum Modulation and De-modulation Process
  • Study of BPSK Modulation and De-modulation Process
  • Study CVSD Encoding and Decoding
  • Study of DSSS using an Analog signal as an input
  • Study of DSSS using an Microphone as an input
  • Study of Direct Sequence Spread Spectrum Modulation and De-modulation Process with CDMA software

 

Description

IT-4209 provides students to explore the basic technique of CDMA communication. The trainer shows the coding scheme used in CDMA communication and modulation / demodulation concept. The trainer also provides the digital coding / decoding of voice signal using CVSD technique and PC-PC communication using software.

Features:

  • Power Supply Included
  • Required Circuits Tested
  • Each Section Clearly Marked for Input and Output
  • Each Section Works as an Independent Unit
  • Built-in Audio Generator
  • Built-In Clock Generators
  • Built-In Data Generator
  • CVSD Codec
  • Each Section Clearly Marked for Easy Understanding

Technical Features:

  • 8-Bit Data Generator: For generation of Binary Data
  • Word length: 8 bit
  • Clock frequency: 2K, 4K, 8K, 16K, 32K, 64K
  • Data format: NRZ
  • PN Sequence generator
  • PN Sequence Bit length: 15 bits
  • Direct Sequence Spread Spectrum (DSSS) Coder and Decoder
  • Analog signal generator: adjustable frequency and amplitude
  • Carrier generator: 455KHz
  • Modulator: Binary Phase Shift Keying Modulator
  • Demodulator: Binary Phase Shift Keying Demodulator
  • Codec: CVSD Encoder / Decoder for Audio
  • Low Pass Filter: 5th Order Butterworth Filter with 3.4KHz cut off
  • Amplifier: AC amplifier with variable gain
  • PC-PC Communication using software
  • Microphone interface for voice