Patent ID: 7020071

Claim:
A method of communicating information in a wireless cellular communication system, the method comprising the steps of: communicating information between a plurality of subscriber units of the system and a base station of the system over at least one of an uplink and a downlink; and separating communications on the uplink from communications on the downlink by assigning, to one of the uplink and the downlink, k carriers in a set of M orthogonal frequency division multiplexed carriers in a given frequency band, and assigning to the other of the uplink and the downlink the remaining M-k carriers in the set of M orthogonal frequency division multiplexed carriers in the given frequency band, wherein adaptive duplexing between the uplink and the downlink is achievable by varying the value of k; wherein the communicating step further comprises the steps of: applying an inverse Fourier transform operation to the set of M orthogonal frequency division multiplexed carriers; converting the transformed set of carriers from parallel to serial format; and multiplying the converted transformed carriers by one of a plurality of sector-specific spreading codes, each of the sector-specific spreading codes being associated with a corresponding sector of an antenna of the base station.