Patent ID: 8676267

Claim:
A system comprising: a plurality of signal generators configured to respectively generate a plurality of digital baseband signals using respective copies of a spreading code, wherein each of the digital baseband signals includes a respective set of one or more traffic channels and a common set of one or more overhead channels; transceiver and beam-forming (TBF) circuitry configured to generate a plurality of transmit signals based respectively on the plurality of digital baseband signals; a plurality of antennas configured to respectively transmit the plurality of transmit signals into space to obtain a respective plurality of spatially propagating signals, wherein the plurality of antennas have a respective plurality of beam patterns that cover a coverage area, wherein at least two of the beam patterns overlap; wherein, for each pair of beam patterns that overlap, a respective pair of signal generators, in the plurality of signal generators, is configured to generate a corresponding pair of digital baseband signals, in the plurality of digital baseband signals, with a non-zero relative time offset between the respective pair of copies of the spreading code, wherein the non-zero relative time offset is selected to reduce destructive interference of the common set of one or more overhead channels within the overlap between the pair of beam patterns.