Etherchannel between 2 pair of APs

Hi,
Any one configured etherchannel at a single switch across 2 pairs of AP with 5Ghz as backhaul? Does it work?
Topology
switch            ----- AP1 --------- backhaul 5Ghz ---- AP3 ---- switch 2
(etherchannel) ------AP2 --------- backhaul 5Ghz ---- AP4 ---- (etherchannel)

Theoretically but throughput also depends on your wireless backhaul since packets can only go over one bridge link. Will you get 300mbps connection. Maybe or maybe not. Wireless is half duplex so really 150mbps actual throughput per wireless link so theoretical 300mbps.
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