Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
At this moment, we are work with microwave relay system.
And i tryd to find modulators/demodulators... nothing...
At this moment, we are use Altera's FPGA.
At www.altera.com you find Constallation Mapper/Demapper Megacore.
That help you to create modulator/demodulator.
QAM mod/demod chips for 155 Mb do not exist at this moment as far as I know.
This would in practice require a very high constellation like 1024 QAM, which you do not like to have.. Needs very good transmission medium and low phase noise.
I think you have more luck in the range of WLAN OFDM chipsets although 155 Mb is a lot...
Btw... you can play with those 'plug and play' IP blocks from Altera but those are not efficient with respect to hardware needs.
Furthermore.. 155Mb QAM ? Well.. good luck with your FPGA's...
Look Intersil site for Broadband wireless modems, modulation up to 128QAM, speed up to 238 Mbps:
h**p://w*w.intersil.com/data/an/an9969.pdf
h**p://w*w.intersil.com/data/an/an9934.pdf
At this time this is more integrated solution for high speed wireless modems .....
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
