Re: [wsjt-devel] 2 pass decoding for WSPR

2015-06-15 Thread Joe Taylor
Hi Paul, KB1EHD wrote: > If the transmission algorithm could be made to preserve coherence over an > entire exchange, so that any given tone will be coherent with all other > occurrences of that tone, that could provide more information the receiver > could use to tease apart overlapping signals.

Re: [wsjt-devel] 2 pass decoding for WSPR

2015-06-15 Thread Paul Dickson
Could tracking the phase of signals over time be done to separate pieces of signal from different transmitters? (Or maybe you already do this.). A signal from one source will be phase coherent with itself over time while other signals will be at some random relationship in phase at least for the

Re: [wsjt-devel] 2 pass decoding for WSPR

2015-06-15 Thread Joe Taylor
Hi Steve, Thanks for your report on two-pass decoding. It's great to see that it can be so effective! I won't have time to look at what you've done until after my return home on June 24. After a quick look, it seems that one thing you've done differently from what I had imagined is doing the

[wsjt-devel] 2 pass decoding for WSPR

2015-06-14 Thread Steven Franke
This is a report of early results from my first attempt at implementing 2-pass decoding. The idea was suggested by Joe a few weeks ago. The motivation is to try to squeeze out a few more decodes on crowded bands where there are a number of otherwise decodable signals being covered up by strong