COM-7003 Turbo code error correction encoder/decoder
The COM-7003 is a full duplex turbo code encoder / decoder for error correction up to 16.5 Mbps (decoded bits) / 49.5 Mbps (encoded bits)
- programmable rates from 1/3 to 6/7
- programmable block length up to 2032 bits
- Includes sync word insertion and automatic frame synchronization
- CRC16 to discard decoded frames with remaining errors
- Very low frame error rate: 1E-3 @ 1.6dB Eb/No (2032-bit frame, rate 1/3)
COM-7003SOFT Turbo code encoder/decoder, VHDL source code & IP core
VHDL source code / IP core implementing turbo code error correction encoding and decoding
Flexible run-time configuration with programmable rate (from 1/3 to 6/7) and frame length (up to 1000 payload Bytes).
Pure VHDL source code for easy port to a variety of FPGAs.
COM-1833 TDRSS modulator and channel simulator
The COM-1833 implements real-time modulation and channel simulation of a TDRSS user-to-ground link in four distinct blocks, each with distinct parameters controls:
It interfaces with COM-1826 TDRSS Spread-spectrum receivers over GbE LAN.
- TDRSS customer modulator, including spread-spectrum and narrow-band PSK
- TDRSS transponder induced distortions
- Ground terminal induced distortions
- Orbit dynamic effects
COM-1931 L/S-band burst spread-spectrum transceiver
L/S-band modem to send and receive short UDP frames over wireless, satellite or cable
Direct-Sequence Spread-Spectrum (DSSS) modulation
Nominal frequency of operation: 950 – 2175 MHz for direct connection to external LNB or BUC. Customization to other frequency bands is possible
Burst mode operation: fixed-length 512-bit data frames from/to LAN/UDP ports. Multiple frames transmitted efficiently with only 32-symbol separation.
COM-1831SOFT Burst-mode DSSS modem up to 80 MChips/s
VHDL source code / IP core implementing a burst-mode spread-spectrum modem
The COM-1831SOFT is a burst-mode direct-sequence spread-spectrum modem for transmitting and receiving UDP data frames over a wireless or cable medium. It not only includes the DSSS modulation and demodulation functions, but also ancillary functions such as error correction, internet protocol stack and Ethernet MAC
The chip rates, symbol rates, spreading Gold code, and center frequency are fully programmable at run time. Several other generic parameters allow one to customize the code for the target application. Frame length, frequency acquisition range, acquisition threshold, preamble length, number of parallel code search circuits are all adjustable prior to code synthesis
Pure VHDL source code for easy port to a variety of FPGAs
COM-1510SOFT Block mode convolutional FEC codec
VHDL source code / IP core implementing block-mode error correction encoding and decoding
Flexible run-time configuration. Trade-off high-speed parallel processing versus small size sequential processing. GMR-1 3G compatible. Pure VHDL source code for easy port to a variety of FPGAs.