计算机科学 ›› 2017, Vol. 44 ›› Issue (Z6): 284-287.doi: 10.11896/j.issn.1002-137X.2017.6A.065
陆鸣越,郭道省,牛和昊
LU Ming-yue, GUO Dao-xing and NIU He-hao
摘要： 物理层网络编码(Physical Layer Network Coding,PLNC)在高阶幅度和相位调制中存在星座点模糊现象。针对这一问题提出了一种物理层网络编码去噪映射算法。在该算法中,中继节点对接收信号进行星座点重新布局,按一定规律将星座点合并,经过处理后的信号星座点降低了一半,进而下行链路的调制阶数也降低了一半,星座图相邻点之间的欧氏距离变大,系统误码率性能得到提高；且中继节点只需解调-重映射-调制,处理复杂度低。通过计算机仿真验证了该算法的有效性。
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