A wireless local area network and location system for locating objects within
a
monitored environment are disclosed. A plurality of access point stations receive
and transmit communication signals within a wireless local area network. A processor
is operatively connected to each of the access point stations and operative for
processing communication signals received from the mobile station and, in one embodiment,
determining which communication signals are first-to-arrive signals and conducting
differentiation of the first-to-arrive signals to locate a mobile station. Delayed
versions of at least one interference signal are weighted and the amplitude and
phase controlled with weighted functions W1, W2 . . . Wn.
The resultant weighted replicas are summed to determine an approximation of disbursed
interference for cancelling interference. The location system can include a tag
transmitter and spaced monitoring receivers and processor.
