My unscientific tests so far with different packages is that MixW seems to decode Olivia the best for me, but the lag is longest. I am using MULTIPSK, MixW and FLDIGI at present.
Other factors enter into things, coexistence with Windows and other software being chief for me. Today I was receiving on two rigs at once, on different bands, the main one transceiving with MULTIPSK and the secondary monitoring another net with FLDIGI. However, I could not transmit on FLDIGI at the same time I was receiving on MULTIPSK. Also, MixW seems to have problems when anything else happens -- an AV update, say -- as XP is set up here. Cortland KA5S ----- Original Message ----- From: Patrick Lindecker To: digitalradio@yahoogroups.com Sent: 11/23/2008 4:15:19 PM Subject: Re: [digitalradio] Re: Olivia mode comparisons, testers needed. Hello Andy, The Multipsk code is not better than the Pawel's design. If I had to rewrite the code, I would prefer to use the Pawel's design because it is simpler. Simply when I wrote it, I was used to do this way (as with MFSK16, PSK31...) and moreover, I had doubts about the precision of a double-estimation by symbol. 10 estimations per symbol seemed to me much better, but of course, it would have be necessary to load much the CPU, so I forgot it. But I was wrong, because under a good S/N, this precision (double-estimation by symbol) is not necessary and under a bad S/N, it all cases this precision is homogeneous with the precision of symbol estimation. Note: it is reminded that, under noise, the quick degradation of decoding is due to : * the loss of symbol synchronization, * the imprecision of the symbol estimation. This can be seen in an "eye" diagram. 73 Patrick
