Author Topic: MIMO communication  (Read 861 times)

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Offline adisonTopic starter

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MIMO communication
« on: June 23, 2009, 09:40:25 AM »
Hallow friends
I take some receivers from remote control cars that work in frequency 27 MHZ
Every transmitter control only his receiver
For every receiver I add other antennas and I supply the right voltage
I put all the receivers in one big receiver that have a lot of antennas and switches
The problem is that the robot receive signal only when the antennas are very close
Why this happen ?
How I can large the range of receiver and transmitter
Thanks
adison

Offline Razor Concepts

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Re: MIMO communication
« Reply #1 on: June 23, 2009, 11:50:48 AM »
I put all the receivers in one big receiver that have a lot of antennas and switches
Having multiple receivers in close proximity is a bad idea, especially if they are all running near the 27mhz band.

For every receiver I add other antennas and I supply the right voltage
Most likely all of the antennas are getting slightly different signals (since they are in different locations), and all those different signals combine together and the receiver gets confused. You cannot add more antennas to get better range on something like this.

Offline SmAsH

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Re: MIMO communication
« Reply #2 on: June 23, 2009, 02:26:57 PM »
Quote
How I can large the range of receiver and transmitter
get a stronger transceiver pair?
Howdy

Offline Soeren

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Re: MIMO communication
« Reply #3 on: June 26, 2009, 04:57:59 AM »
Quote
How I can large the range of receiver and transmitter
get a stronger transceiver pair?
Get a more selective transceiver pair!
Regards,
Søren

A rather fast and fairly heavy robot with quite large wheels needs what? A lot of power?
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Engineering is based on numbers - not adjectives

 


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