Sung Kyung Kim

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In broadband wireless OFDMA systems where a set of subcarriers is shared among multiple users, the overall system throughput can be improved by a band AMC mode that selects subbands preferential to individual users. As long as channel qualities for the subbands of all users are known a priori, multi-user and frequency diversity gains can be simultaneously(More)
—A prevalent underlying theme is the techniques used to control the handover of users as they move between cells, at greater speeds, and with stricter requirements on both the QoS delivered to the user and operational costs associated with a connection. The decision to initiate a handover depends on a number of control variables. Simple estimation of(More)
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