Methods and apparatus for reducing cochannel interference in...

Details Methods and apparatus for reducing cochannel interference in... Methods and apparatus for reducing cochannel interference in...

H - Electricity

04

B

H04B 15/00 (2006.01) H04B 1/707 (2006.01) H04B 7/005 (2006.01) H04B 7/216 (2006.01)

Patent

CA 2275914

A method and apparatus for increasing system capacity in a mixed-rate wireless communication are disclosed. Improvements are obtained using multiuser detection or antenna array processing techniques or both to explicitly cancel or attenuate only the high power users. Multiuser detection may be combined with antenna array processing to recover capacity appropriated by the high-power users. By mitigating the interference effects of only the high-powered users, the computational burden is manageable. An antenna array algorithm or a multiuser detection algorithm or both, are applied only to n high rate users (n < k total users). In an antenna array processing implementation, fewer antennas may be employed (one for each high-rate user). In a multiuser detection implementation, fewer cancellation stages may be employed (one for each high-rate user).

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