For what purpose? If you are simply tuning a receiver to a new frequency and can take the I/Q baseband, then no synchrony is required. If you are attempting to demodulate QAM inside that I/Q channel, you are indeed required to do carrier and symbol tracking.
Bob -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Dawei Shen Sent: Thursday, March 24, 2005 10:16 PM To: Sachi; Discuss-gnuradio@gnu.org Subject: Re: [Discuss-gnuradio] A question about the synchronization Hi, guys I am also stuck with this. After the ADC, at the quadrature downconverter, when we convert the IF frequency signal to two IQ base band signals, do we need carrier synchronization? My knowledge on communications is not enough, any pointers from you would be appreciated. BTW: what kind of applications here would require synchronication, and any help on how to implement it? Thank you very much for your time. Dawei --- Sachi wrote: > Hi Eric and Matt > > When the input IF signal passes quadrature > downconverter, does any kind of carrier and symbol > synchronization is performed in the FPGA code? If > so, > which algorithm did you use? > > Thanks > > Sachi > > > > __________________________________ > Do you Yahoo!? > Yahoo! Small Business - Try our new resources site! > http://smallbusiness.yahoo.com/resources/ > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > __________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/ _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
