as we know, one of the microwave can achieve 1Gbps with the dual core MIMO setup…
Just wonder, is there any new protocol after nv2 to make this thing happened or close to it…
current AC with 80Mhz having many disadvantage and cause a lot of interference even we use this antenna…
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Most advanced microwave link gives 250Mbps on 28MHz channel, using 2048QAM modulation.
ipasolink.PNG
If you use XPIC (like our “MIMO”), you may get 500Mbps.
Of course you need totally clean spectrum, what you can only achieve by using licensed bands (or moving to North Pole).
Actually, most used modulation are QAM (Quadrature Amplitude Modulation). Each time you add a symbol, modulation index doubles. For example, in 64QAM signal can represent 64 differents simultaneous symbols.
modulation.png
In order to get 1Gbps on 28MHz channel, you’ll need 37 bits / Hz (assuming perfect efficiency and no guard interval)
This means… 137438953472QAM. I’m afraid we will never see something like that.
To get higher datarates, you need to use wider channels.
angboontiong Title thread say 28Mhz but after few rows you say 58Mhz
I think you mean 58Mhz but this is a strange Measure.. usually there are 56Mhz channel.
In my personal experience I’ve many link in 17/18Ghz that can push real 480Mbps TCP Full Duplex using a single-pol antenna with modulation of 1024qam lantecy around 0ms until you reach the last few mbps of his capacity
802.11ac ptp link have nothing to do with this type of microwave link
My next step is to create a XPIC link
XPIC use two radios and antenna in dual polarity.
I don’t think that you can reach 1Gbps Fdx but 850Mbps (maybe 900) is possible. Nowadays microwave link also support 2048qam