SM antenna augmentation

Hi,

What is SM antenna augmentation used for? is it to increase the probability of communicating at higher order modulation? or or to increase the system gain or the range?

thnx...

Almajidi,

  In the case of PMP450 radios we have two options MIMO-A and MIMO-B.

As you know PMP450 uses two polarities offset from each other by 90 degrees.

In MIMO-A we take the data that we need to transmit and send out both polarities hoping that at least one path makes it through. This adds redundancy and resiliency.

In MIMO-B we take the data and separate it in two so that half of the data is sent on one polarity and the other half is sent on the other polarity. This has the effect of doubling throughput.

PMP450 uses an adaptive modulation algorith that will choose which technique is best at any point in time.

Was that your question?

Thanks,

  Seth

Hi There
Q1 = Grateful if any kind sol can point me to a definition of (SM) antenna augmentation.
MIMO-A and MIMO-B I would call methods of types of modulation. Q2 Is this a correct characterization?
Are MIMO-A/B related to the term augmentation then?
With thanks for any reply…

A1 = Antenna augmentation is typically referred to as Antenna gain.
A2 = MIMO, or multiple in multiple out, basically refers to the number of input and output data streams in a system. It does not refer to a signalling rate or modulation type in a system.
A3 = Antenna gain and MIMO do not have a direct relation and are two completely different principals.

CommScope has an eBook guide regarding microwave communications basics you might want to review.

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Thanks Eric, appreciated

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