I have a question about MIMO WiFi. It seems that many devices only have single antennas, which is usually OK for internet given that the theoretical throughput isn't much lower than max internet speeds (real throughput and LAN speed is a different story.) But does a MIMO router/switch that is serving multiple wireless devices perform better because it allows multiple connections? To put it another way, does each '1x1' antenna of a 3x3 router/switch end up serving a device (in an abstract way, I don't think it actually works that way) so that each single antenna device will see it's maximum speed?
Hi Madman, MIMO does not establish 1:1 connection b/w antennas, but each antenna in transmitting end sends data to all the antennas at receiving end, that too at same frequency. This is also called smart antenna. The DSP at transmitting and receiving end is really smart to encode the decode the data and transmitting and receiving end. This may help understand better : http://www.ieee.li/pdf/viewgraphs/wireless_mimo.pd...
Thanks for that link, Mayank_k. Looks interesting. Much of it is above my understanding, but the first 17 slides (or so) are illuminating. I'll save for later perusal.
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MadMan007 - Saturday, January 11, 2014 - link
I have a question about MIMO WiFi. It seems that many devices only have single antennas, which is usually OK for internet given that the theoretical throughput isn't much lower than max internet speeds (real throughput and LAN speed is a different story.) But does a MIMO router/switch that is serving multiple wireless devices perform better because it allows multiple connections? To put it another way, does each '1x1' antenna of a 3x3 router/switch end up serving a device (in an abstract way, I don't think it actually works that way) so that each single antenna device will see it's maximum speed?Mayank_k - Monday, January 13, 2014 - link
Hi Madman,MIMO does not establish 1:1 connection b/w antennas, but each antenna in transmitting end sends data to all the antennas at receiving end, that too at same frequency. This is also called smart antenna. The DSP at transmitting and receiving end is really smart to encode the decode the data and transmitting and receiving end.
This may help understand better : http://www.ieee.li/pdf/viewgraphs/wireless_mimo.pd...
Zap - Monday, January 13, 2014 - link
Thanks for that link, Mayank_k. Looks interesting. Much of it is above my understanding, but the first 17 slides (or so) are illuminating. I'll save for later perusal.