Architecture to support network-wide multiple-in-multiple-out wireless communication

A method of combining information received by a plurality of antennas associated with a plurality of radio heads, comprising:

• receiving, over a plurality of backhaul links between a controller and the plurality of radio heads, information indicative of at least one first signal transmitted by at least one mobile unit and received by the plurality of antennas;
• and
• combining, coherently, said information received over the plurality of backhaul links using timing information associated with the plurality of backhaul links.

A method of combining information received by a plurality of antennas associated with a plurality of radio heads that communicate with at least one controller over a plurality of backhaul links, comprising:

• transmitting, over at least one backhaul link between a first radio head and said at least one controller, information indicative of at least one first signal received by at least one antenna associated with the first radio head such that the information transmitted by the first radio head can be coherently combined with information transmitted over at least one backhaul link by at least one second radio head using timing information determined based on a plurality of signals transmitted over the plurality of backhaul links.