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【摘 要】
：
The allocation of bandwidth to unlicensed users, without significantly increasing the interference on the existing licensed users, is a challenge for Ultra Wide
【机 构】
：
Department of Computer Science
【出 处】
：
计算机科学技术学报（英文版）
【发表日期】
：
2004年期
【基金项目】
：
the National Science Foundation (NSF) of USA under
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