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BACKGROUND The potential benefits and risks of the use of dual antiplatelet therapy beyond a 12-month period in patients receiving drug-eluting stents have not been clearly established. METHODS In two trials, we randomly assigned a total of 2701 patients who had received drug-eluting stents and had been free of major adverse cardiac or cerebrovascular(More)
In this paper, we propose a resource allocation scheme for the WiBro (Wireless Broadband Internet which will be commercialized next year in Korea) system employing OFDMA (orthogonal frequency division multiple access) and TDD (Time Division Duplex) techniques in order to improve the bandwidth efficiency. If the required throughput (in bps) for a user in a(More)
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