Modern multichannel detection theory principles are applied to design multichannel antenna systems (such as phased-array antenna, multibeam antenna system, diversity systems) operating in an interference environment using optimal space-time receivers. The problem of multichannel antenna system design is shown to reduce to that of detecting a vector signal in correlated vector noise. For known signal detection in correlated white Gaussian noise interference, various forms of optimal receivers are discussed, some of which are easily adapted in real time. This analysis can be extended in generalizing the design of current multichannel antenna systems, including noise cancellers, for Gaussian signals operating in interference modeled as colored noise, and/or time-frequency-spread jammers.
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