Zaltys Wireless Modem Solutions
The Zaltys™ range offers a configurable set of components for the design of modems in the wireless communications area. Our first product in this range is the Zaltys-HDRM, a high data-rate modem for satellite communication systems. It supports all signal processing and synchronisation functions necessary to modulate and demodulate BPSK, QPSK, OQPSK, 8PSK and 16QAM at symbol rates from 9.6Ksymb/s to 40Msym/s when implemented in a Xilinx Spartan3 device.

The demodulator performs all of the digital processing required between a radio-interface frontend and forward error correction processing. This includes control of the input AGC circuitry, sample rate decimation, symbol timing recovery and carrier recovery. The output of the demodulator consists of a stream of ‘soft’ symbol representations in the constellation space of the chosen modulation scheme.

View Zaltys HDRM Demodulator Data Brief (pdf format)

Prime PDH Solutions
Silicon Infusion has developed a ‘mix and match’ collection of semiconductor IP components which provide all the functionality required to build a wide range of primary-rate access products. These components include T1/E1/J1 framers and deframers, PCM highway interfaces, signalling stack controllers and HDLC and other protocol engines for communication over assigned channels. To connect all these components together a crosspoint time/space switch (TIE) is also available.

An example Prime based device has already been designed and tested. The Prime-8 variant consists of 8 T1/E1/J1 framers and deframers (each with associated signalling stack), 8 PCM interfaces, 24 HDLC controllers and 8 X50 controllers. A TIE block interconnects all the interface components together to form a fully integrated system.