Dave, >> On other thing that I can not understand is why THOR's performance >> proved to be so poor on Tony's tests.
> Where can I find the specifics on the reference tests? Please see attached for the HF Path Simulations. Here are some of the details... OS: Windows Vista Simulator: Moe Wheatley's PathSim Software: Fldigi (and others) Sound card: Realtek HD / Virtual Audio Cable. Virtual Audio Cable was used to route the audio between the HF path simulator and Fldigi. The same configuration was used to test other modes with other software; Mixw, DM780, Multipsk etc. The two-PC method was tried as well with the path simulator and digital mode software running on separate machines. The results were the same. The tests were conducted with only the path simulator and digital mode software running. PathSim adds AWGN to simulate signal-to-noise ratio. You'll find the details about the HF path simulator here: http://www.moetronix.com/ae4jy/files/pathsimtech100.pdf > For fldigi: > Selected sampling rate > Selected converter > PPM offset for Rx I have the Vista version... Tony, K2MO ----- Original Message ----- From: "David Freese" <[EMAIL PROTECTED]> To: <digitalradio@yahoogroups.com> Sent: Sunday, October 12, 2008 9:37 AM Subject: [digitalradio] Re: THOR robustness or lack thereof > --- In digitalradio@yahoogroups.com, Rick W <[EMAIL PROTECTED]> wrote: >> >> Great information, Dave, >> >> On other thing that I can not understand is why THOR's performance >> proved to be so poor on Tony's tests. The robustness to multipath and >> Doppler does not seem to show up although sensitivity at -15 dB SNR >> seems quite good. > > Where can I find the specifics on the reference tests? > > For system: > Platform and OS > Sound card system > # of concurrent modem programs running > Test software used? > on-line signal generation? > characteristics of noise generator? > how was multipath and doppler generated? > > For fldigi: > Selected sampling rate > Selected converter > PPM offset for Rx > > Dave, W1HKJ > > >
Path Simulator Tests.rtf
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