Multi-Carrier Group Modem Module

• Simultaneous transmission and reception of data with 256 carriers
• Simultaneous independent communication among128 users at different transmission speed
  
• Available to distribute required bandwidth to 256 carriers at its maximum number
  (effective transmission for a number of narrow band carriers)
  
• Available to configure transmission parameters depending on each channel VME
• Small and portable size and lower power consumption achieved by VME card size modem

Price

Specification

(1) Frequency multiplexer / demultiplexer function
Input/output ports	multi-carrier port : 1 pair single-carrier port : 1 pair
Maximum No. of carriers	256(multi-carrier port) 1(single-carrier port)
Minimum carrier separation	100kHz *1
TX output power density	-58dBm/kbaud *1
RX input power density	-68 ~ -58dBm/kbaud *1
Usable frequency band	19.2MHz ~ 44.8MHz (bandwidth:25.6MHz) *1
(2) Modulation / demodulation function
Modulation speed	32kbaud ~ 25.6Mbaud(variable) *1
Modulation scheme	QPSK , OQPSK , π/4QPSK , BPSK
Pulse shaping filter	root raised cosine roll-off filter roll-off factor 0.2 , 0.35 , 0.4 , 0.5
Detection scheme	absolute coherent detection
BER performance (typical)	<10-3 @Eb/No=7.5dB <10-4 @Eb/No=9.0dB
Internal AFC	frequency sweep for initial acquisition frequency track hold function
Internal AGC	10dBp-p compensation range external AGC control signal output
Other function	burst transmission (TX only) TX clock adjustment RX recovered clock output I/Q monitor output
(3) Data I/O function
Maximum No. of channels	128
TX input data	8bit, parallel
RX output data	3bit soft decision8parallel
(4) Size, power supply
Size	233.35(W)160.0(D)15.0(H)mm *excluding front panel
Supply voltage and power consumption	DC 5V : 5W (max) DC 3.3V : 10W (max)

Notice : Specifications subject to change without notice.
*1 master clock 102.4MHz

Example of System Configuration

• Suitable for Earth Stations of Satellite Communications
  • Ultra Small HUB Station
  • Mesh Network System based on Multi-cast transmission
  • Highly Secured Network System
• Multi-carrier signal generator
• General Purpose Modem, etc