Symbol estimation-based decorrelator for directing beams and nulls to remote users in a wireless communications system

A machine-readable medium having stored thereon data representing instructions which, when executed by a machine, cause the machine to perform operations comprising:

• collecting measurements of radio frequency signals received at different elements of an antenna system over time, the received signals corresponding at least in part to transmissions received from a system user;
• collecting representations of the transmissions of the system user;
• and
• comparing the representations to the collected measurements to form a spatial characterization of the radio channel traversed by transmissions of the system user in which the elements of the spatial characterization represent forming a beam in the direction of the system user and directing nulls to interferers.

An apparatus comprising:

• a receiver coupled to different elements of an antenna system;
• a sampler to collect measurements of radio frequency signals received at different elements of an antenna system over time, the received signals corresponding at least in part to transmissions received from a system user;
• a memory to collect representations of the transmissions of the system user;
• and
• a signal processor to cross-correlate the collected measurements and the collected representations, and to compare the cross-correlation to the collected measurements to form a characterization of the radio channel traversed by transmissions of the system user.