Specification :

I. Product Features
CDMA mobile communication principle experiment apparatus is tightly close to such teaching syllabus as Spread Spectrum Communication. The experiment contents are comprehensive, which could fully meet Experiment teaching requirements of such course as spread spectrum mobile communication on communication’ major among colleges and universities.
( 1) The experiment apparatus has designed a complete direct-spread code-division multiple access ( DS-CDMA) mobile communication system, which realizes wireless transceiver by carrier and tightly combines textbook of Spread Spectrum Communication, and outlines the key points of textbook, such as GOLD sequence, spread spectrum and despread spectrum, acquisition and tracking, synchronization extraction, error correction encoding and so on, enabling users to further understand the essence of CDMA by experiments.
( 2) CDMA system includes many functions, such as direct spread spectrum and despread spectrum, code division multiple access, acquisition and tracking of pseudo-random sequence, bit synchronization, frame synchronization extraction, carrier recovery, error correction coding and encoding, which could compose a complete CDMA mobile communication system. Simultaneously, it could establish big CDMA system between two or multiple experiment apparatuss through wireless transmission.
( 3) Adopt plexiglass baffle for protection

II. Performance Parameters
( 1) AC, DC power supply
Input: AC 220V± 10%
Output: DC ± 12V/ ± 5% , ± 5V/ ± 5% , -8V/ ± 5%
( 2) CDMA Transmitter Receiver
Signal code speed: 1kbit/ s, 2kbit/ s ( optional)
Spread spectrum code speed: 100kbit/ s, 200kbit/ s ( optional)
Spread spectrum gain: 50, 100, 200 ( optional)
Spread spectrum mode: direct spread spectrum
Modulation mode: PSK, DPSK ( optional)
Carrier frequency: 10.7MHz
( 3) Experiment Apparatus Host Specification: 35 cm × 27cm× 10cm