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My legacy (802.11a/b/g) AP already has two antennas. Isnt it capable of MIMO?

April 26, 2017ANTENNAS AP capable legacy MIMO

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My legacy (802.11a/b/g) AP already has two antennas. Isnt it capable of MIMO?

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MIMO is not just about having multiple antennas but about having multiple transmit/receive RF chains. Though a legacy (802.11a/b/g) AP has two antennas, it hosts only one RF chain that selects one of the antennas to transmit and receive a signal. This is commonly known as switched diversity or “selection combining.” 802.11n devices instead use the MIMO capability to simultaneously process signals over multiple antennas.