IT-4209 CDMA Transceiver Trainer

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.

 

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: Variable up to 3.4KHz

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

Accessories: Experiment Manual, 2mm patch cords, USB Cables, Software CD and power cord

 

Experiments included: 

CDMA Brief Description

Study of Direct Sequence Spread Spectrum Modulation and Demodulation Process

Study of BPSK Modulation and Demodulation 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 PC – PC Link using Direct Sequence Spread Spectrum Modulation and Demodulation