CDMA TRAINER

CDMA TRAINER
Features

·       A complete CDMA-Direct Sequence Spread-Spectrum (DSSS) system

·       Customized real-time software

·       Analysis in Digital time, Analog time, and Frequency domain

·       Separate CDMA-DSSS Modulator and Demodulator for higher learning

·       More than 25 nos. of test point

·       On-board BNC connector for Analog I-Q signal analysis

·       Software based variable Chip rate up to maximum 10Mchip/s

·       User selectable different types of Gold code

·       User selectable different types of Maximum Length Sequences

·       User selectable different types of Barker code

·       User can design his own Gold / MLS code.

·       Time and Frequency domain analysis and measurement of baseband BPSK, QPSK and OQPSK Modulation with output spectral shaping I-Q filter.

·       Built-in I & Q channel root-raised Cosine filter for spectral shaping.

·       Built-in Digital Data Generator

·       Built-in additive White Gaussian noise (AWGN) Generator for analysis of noise gain effect on the Signal

·       Built-in Frequency offset (Doppler) Generator for analysis of frequency offset effect on the Signal

·       Measurement of BER with internal data which is being transmitted

·       Measurement of BER with different SNR

·       Standard 40 pin dual row connectors for external input and output

2. Technical Specification

·       Demodulator

·       Software programmable chip rates up to maximum 10 Mchips/s

·       Spreading codes :

·       Gold sequences (up to 2 -1 chips)

·       Maximal length sequences (maximum length 2 -1 chip)
- Barker codes (length 11, 13)

·       Baseband Modulation : BPSK / QPSK / OQPSK with output spectral shaping

·       Spectral shaping filter : Root-raised Cosine square root filter

·       Internal generation of pseudo-random bit stream and unmodulated carrier for test purposes

·       I & Q Channel DAC-10 bit@ Sampling rate 125 MSPS max.

·       Anti-aliasing low pass filter with 3dB bandwidth of I & Q channel filter:

·       Sallen-Key 6-pole Butterworth with cut-off frequency 13MHz

·       Built-in Additive White Gaussian Noise Generator

·       Built-in Frequency offset (Doppler) Generator

·       Sequential code search

·       Extensive monitoring : Receiver lock, Carrier frequency error, code lock, synchronization etc.

·       Mains Supply : 110-220 V AC ±10%, 50/60Hz

·       Operating Conditions : 0-40 C, 80% RH

·       Weight : 2 Kgs. approximately

·       Product Tutorial : Online (Theory, procedure, reference results, etc)

·       CDMA-Direct Sequence Spread-Spectrum (DSSS) Modulator,
Included items