Re: [Freetel-codec2] Codec2 repeater

2017-12-06 Thread Gullik Webjorn
I think it is useful to think about WHY you would want to introduce "new technology". It does make sense to take advantage of current development concerning modulation and bitrate, and in this area Ham Radio is far behind. As for TDMA, why would we want that ? Well, I feel separate channels

Re: [Freetel-codec2] Codec2 repeater

2017-12-06 Thread Adrian Musceac
Perhaps it is possible. However, we have repeaters around here with more than 200 km coverage radius, and I don't see TDMA solving both capacity and coverage. Time will tell. Glen, thanks for expanding on LTE. I am not deeply familiar with the LTE PHY and I don't intend to copy it, just

Re: [Freetel-codec2] Codec2 repeater

2017-12-06 Thread David Rowe
Hi Adrian, Consider this: with carrier per user instead of timeslot per user, you don't have the distance limitation that TDMA introduces. I think that's more a limitation of existing protocols. For example we could design a TDMA protocol to handle longer distances, or use probe packets