CDMA Trainer

CDMA Trainer

CDMA Trainer

Lab Catalog Supply Code: NEP0016

CDMA Trainer
1. 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
CDMA Trainer Operation Manual, Lab Instructor Guide and Student Workbook. CDMA Trainer for Educational Vocational, Didactic Technical Training Equipment Labs.

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