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angboontiong
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28Mhz with 1Gbps...

Mon Aug 24, 2015 1:55 pm

Dear Mikrotik,

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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lordkappa
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Re: 28Mhz with 1Gbps...

Wed Aug 26, 2015 12:22 am

If your microwave can achieve 1Gbps I'm amazed. I barely mange 35Mbps on high/15Mbps on defrost. Tends to heat up a lot, either way.

This is all without NV2, though. I can't seem to get NV2 to work, might need to upgrade to a new turn-table.
 
angboontiong
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Re: 28Mhz with 1Gbps...

Wed Aug 26, 2015 7:20 am

If your microwave can achieve 1Gbps I'm amazed. I barely mange 35Mbps on high/15Mbps on defrost. Tends to heat up a lot, either way.

This is all without NV2, though. I can't seem to get NV2 to work, might need to upgrade to a new turn-table.
Hi dude,
yup, with 1+0 dual core activated on 58Mhz , it can provide me 1Gbpz, if with 2+0 on 4x4 mimo setup, it can be 2Gbps.
 
InoX
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Re: 28Mhz with 1Gbps...

Wed Aug 26, 2015 9:22 pm

On 100% power my microwave owen can transmit up to 200mbps with 2x2 and 40mhz channel to heat up my meal in about 2 minutes.
 
angboontiong
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Re: 28Mhz with 1Gbps...

Thu Aug 27, 2015 7:59 pm

On 100% power my microwave owen can transmit up to 200mbps with 2x2 and 40mhz channel to heat up my meal in about 2 minutes.
:shock: :shock: :shock:
 
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andressis2k
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Re: 28Mhz with 1Gbps...

Thu Aug 27, 2015 11:54 pm

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.

Regards
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Lupin
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Re: 28Mhz with 1Gbps...

Fri Aug 28, 2015 12:22 am

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

Using 112Mhz channel-width change the things
 
angboontiong
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Fri Aug 28, 2015 9:09 am

Normal microwave is run on single core and in 1024 qam normally you can get 500m plus...

There is a proven microwave can deliver 1 Gbps/ 1Gbps under 2+0 dual core, dual polarity configuration.

Meaning to said that, 2+0, it become 4*4 (dual core * dual polarity) , 28Mhz channel with you can get 1G /1G.

Under 56Mhz channel width, you can get 2G /2G...

The frequency range is 6Ghz to 18 Ghz...



Sent from my Che2-L11
 
angboontiong
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Fri Aug 28, 2015 9:11 am

Add on, for this microwave, you can using single channel, Ipasolink in term of price and reliability is not up to level...

Saf microwave have some improvement need to be done then only can beat it...

Sent from my Che2-L11

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