If you are using the pre-n technology, i am not sure that there are routers that can support wireless bridging.
True MIMO uses backhaul -- wireless bridge versus WDS
The backhaul function is essentially a wireless bridge that connects one MIMO AP to another MIMO AP.
How does wireless backhaul differ from conventional WDS (Wireless Distribution System)?
AeroGuard™ dual radio design allows for dedicated AP and backhaul radios, delivering far superior capacity performance over a single radio AP configured with a WDS bridge, not to mention the MIMO performance advantage.
WDS is an Wi-Fi network feature that allows APs from some vendors to split RF channels, and thus bandwidth, between AP and bridging functions.
AeroGuard™ requires no channel splitting, but offers dedicated bandwidth for the AP and bridging functions, enabling reliable network backhauls. In addition, MIMO technology enhances the range and reliability of signal quality to produce truly business-class all wireless networks.
To get a complete picture read the following link:http://www.sohoware....ve/faq-mimo.htm