In wireless healthcare monitoring systems, bandwidth allocation is an efficient solution to the problem of scarce wireless bandwidth\r\nfor the monitoring of patients. However, when the central unit cannot access the exact channel state information (CSI), the\r\nefficiency of bandwidth allocation decreases, and the system performance also decreases. In this paper, we propose an algorithm\r\nto reduce the negative effects of imperfect CSI on system performance. In this algorithm, the central unit can predict the current\r\nCSI by previous CSI when the current CSI is not available. We analyze the reliability of the proposed algorithm by deducing the\r\nstandard error of estimated CSI with this algorithm. In addition, we analyze the efficiency of the proposed algorithm by discussing\r\nthe system performance with this algorithm.
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