Outline of a Multiple-Access Communication Network Based on Adaptive Arrays

This paper proposes a single-frequency communication system consisting of K mobile users simultaneously communicating with a central station equipped with a computationally adapted array consisting of n≥K antennas. The array employs K sets of n weights to segregate the signals received from the K users. The weights are determined by direct computation based on position information determined by direct computation based on position information transmitted by the users. Currently known techniques require (for n=K) about (4/3)K⁴ computer `operations´ (multiply and add). An improved technique is developed here which accomplishes this in 8/K³ operations, yielding a reduction by a factor of K/6.