计算机科学 ›› 2016, Vol. 43 ›› Issue (4): 163-166.doi: 10.11896/j.issn.1002-137X.2016.04.033
高锐锋,倪丹艳,包志华,胡英东
GAO Rui-feng, NI Dan-yan, BAO Zhi-hua and HU Ying-dong
摘要： 提出了一种在认知无线中继网络物理层安全意义下的最优时频资源分配方案。在该方案中,主用户通过次用户的协作进行通信；作为回馈,允许次用户接入该频段传输信息。在次用户网络中,选择两个最优次用户,一个用作协作转发,一个用作协作干扰,同时在保证次用户网络传输速率的条件下,通过寻求系统的最优带宽分配因子、时隙分配因子以及次用户的协作功率,来最大化主用户的安全容量。仿真结果表明,提出的方案切实可行,能够显著提高主用户的安全容量。
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