Channel estimation for coordinated access point transmissions in wireless networks

A station device, the station device comprising:

• memory and processing circuitry, configured to:
• identify one or more first training fields received from one or more antennas of a first access point and one or more second antennas of a second access point during a first time period;
• identify one or more second training fields received from the one or more antennas and the one or more second antennas during a second time period, wherein the first access point and second access point are associated with a channel matrix maintained by the station device, the channel matrix comprising a first link corresponding to the first access point and a second link corresponding to the second access point;
• determine the one or more first training fields and the one or more second training fields are based at least in part on an orthogonal matrix and one or more cyclic shifts;
• and
• determine one or more first channel estimations associated with the one or more antennas, and one or more second channel estimations based at least in part on the one or more first training fields and the one or more second training fields.