- This topic has 1 replies, 2 participants and was last updated 13 years, 5 months ago da
.
-
Post
-
I was wondering how MIMO technology could be used on bullet devices that use only one antenna, since this type of technology uses at least two transmitters and two receivers.
MIMO is an acronym for Multiple Input, Multiple Output. To work, MIMO technology must have multiple transmitters and receivers (At least 2 as in the case of Nanostation M or of Rocket). Obviously, the Bullet has only one transmitter and receiver, so it is not a MIMO device, but the M version has software that allows it to participate in an 802.11n MIMO network. The Bullet M, using only one antenna will use only one Chain (Spatial Stream) in technical terms indicated with 1 × 1 unlike the Nanostation M and the rocket which, having two H and V polarization antennas, can exploit the 2 × 2 Chain. For what concern throughput we can say: Devices that use one spatial streams (1 × 1) can reach up to MCS7 data rate, which at channeling of 20 MHz correspond to 72 Mb / s, and at channeling of 40 MHz correspond to 150 Mb / s Devices that use two spatial streams (2 × 2) can reach up to MCS15 data rates, which correspond to 20 Mb / s at channeling of 144 Mhz, and at channeling of 40 Mhz correspond to 300 Mb / s. table you can see the various throughput indicated with the MCS index (Modulation Coding Scheme), on this post you can find more information about it.
- You must be logged in to reply to this topic.