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  • Fall 2015

    CAO, Yun

    Although underlay networks mitigate the dual problems of spectrum congestion and spectrum under-utilization, the bi-directional (primary-to-secondary and secondary-to-primary) interference issues must be addressed to improve their reliability, coverage and capacity. To address these problems,...

  • Fall 2012

    Senaratne, Damith N.

    Multiple-inputmultiple-output (MIMO) systems, characterized by multiple antenna transceivers, add a ‘space’ dimension to signal processing for wireless communication. Conventionally, the degrees of freedom (DoFs), i.e., the number of independent data streams that can be transmitted or received,...

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