We do both. You can do diversity today in ALL branches of PowerSDR so
long as you have a Flex 5000 and an RX2. You can do that right now in
all available software.
You can do beam steering in pb-pal because of the synchronous reception
between RX1 and RX2 from the antenna to your audio stream.
It is the automated version of this that is the long term goal. We also
need to figure out to best instruct/educate the user on the capabilities
and limitations of automation. If your signal of interest is weaker
than the interferer, it will be hard to automate since the algorithm
will necessarily be greedy unless some outside influence (the user)
teaches the algorithm how not to be greedy.
This will require some back and forth between developers and users.
Bob
On 2/2/2010 11:58 AM, Jerry Flanders wrote:
At 10:20 AM 2/2/2010, Steve Kallal wrote:
<snip>
I think the diversity reception feature needs to be better touted by
Flex,
of course when it gets released to production. An internet search reveals
that K3 users are bragging about diversity reception, but they are
talking
about stereo reception in the headphones and not the phase/amplitude
nulling
that Bob has created. It is a whole different ball game, a feature
that can
make receiver performance numbers have much much less meaning IMHO.
73,Steve N6VL
Diversity reception has been used for many years in communications
circuits and the conventional definition is well understood by OTs.
But when you can shift phase/amplitude to enhance or null signals, it is
not conventional diversity. I think the term "Beam Steering" has been
used for this and is more descriptive to me. If Flex starts claiming
beam-steering features, many will not "get it" if Flex simply calls it
diversity.
BTW, K1LT writes about his experience with beam steering using an array
of softrock receivers at http://k1lt.com . Also, Rocky is available in a
"diversity" version (V2.0) for use with two softrock receivers at
http://www.dxatlas.com/Download.asp .
Jerry W4UK
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