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We consider the subcarrier allocation problem for multicast transmissions in the downlink for an OFDM-based wireless network. In conventional multicast transmissions, the data rate of a multicast group is dictated by the achievable data rate of the worst case user whose channel condition is the poorest. We develop a new technique called subcarrier pair allocation (SPA) to allocate OFDM subcarriers...
In this paper, we propose a dynamic OFDMA based subcarrier/power allocation which aims to protect the newly established TCP connections. The proposed allocation utilizes an estimation of the current congestion window of TCP connections to allocate resources so that vulnerable flows with small congestion windows avoid entering packet recovery via retransmission time out. In addition, for the long-lived...
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