Patent ID: 7519346

Claim:
A method for using one receiving adaptive array and plurality of receiving antenna elements at the receiving end for reducing associated first multipath and other interference of at least one first radio signal in a single frequency channel and reducing associated second multipath and said other interference of each one of N second radio signals in said same frequency channel, where a single representation of each one of said first signal radio signals and said N second radio signals are transmitted from the same transmit antenna with at least one transmit antenna element and said receiving antenna elements are coupled to a plurality of weights, said method comprising the steps of: a. generating at least one said first radio signal and said N second radio signals, with N at least 1, so that said first radio signals have substantially similar characteristics and representation of each one of said first radio signals and each one of said N second radio signals are separable at said receiving end; b. simultaneously transmitting a single representation of each one of said first radio signals and a single representation of each one of said N second radio signals generated in step a. from said same transmit antenna, with said transmit antenna having at least one said transmit antenna element, to generate first transmitted radio signals and second transmitted radio signals respectively in said same frequency channel so that characteristics of said first transmitted radio signals are substantially similar and so that transmission and propagation characteristics allow said receiving adaptive array to process representations of said first transmitted radio signals and said second transmitted radio signals as substantially transmitted from a single transmit antenna; c. receiving said first transmitted radio signals and said second transmitted radio signals generated in step b. with said receiving antenna elements to generate separate antenna output signals; and d. reducing associated said first multipath and said other interference of said first radio signals and associated said second multipath and said other interference of said N second radio signals in representations of said antenna output signals generated in step c. with said receiving adaptive array to generate an adaptive array output signal including a representation of each one of said first radio signals with reduced associated said first multipath and other said interference and representation of each one of said N second radio signals with reduced associated said second multipath and said other interference with the same said weights being applied to representations of said first radio signals and said second radio signals and with said receiving adaptive array primarily responding to representations of said first transmitted radio signals.