Patent ID: 7154958

Claim:
A wireless transmitter, comprising: a plurality of antennas, wherein each of the plurality of antennas is operable for transmitting signals; for each of a plurality of different user channels, circuitry for providing a plurality of groups of symbols in a first symbol group sequence; for each of the plurality of different user channels, circuitry for forming a first modulated symbol group sequence for the user channel by modulating the symbols in the first symbol group sequence for the user channel with a unique code that corresponds to the user channel and distinguishes the user channel from each other of the plurality of different user channels; circuitry for combining the first modulated symbol group sequence for each of the plurality of different user channels such that a first combined modulated symbol sequence is provided to and transmitted by a first antenna in the plurality of antennas; for each of the plurality of different user channels, circuitry for forming a second symbol group sequence by time reversing symbols in at least some of the plurality of groups of symbols to form the second symbol group sequence different from the first symbol group sequence; for each of the plurality of different user channels, circuitry for forming a second modulated symbol group sequence for the user channel by modulating the symbols in the second symbol group sequence for the user channel with a unique code that corresponds to the user and distinguishes the user from each other of the plurality of different user channels; and circuitry for combining the second modulated symbol group sequence for each of the plurality of different user channels such that a second combined modulated symbol sequence is provided to and transmitted by the second antenna.