Analysis and extension of zigzag multiuser detection
Analysis and extension of zigzag multiuser detection
复制标题
Zigzag多用户检测分析与扩展
DOI：
--
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
E. Huang
中科院分区：
文献类型：
--
作者：
David Qiu;F. J. Block;E. Huang
来自网络中不同节点的同时传输可能导致多用户干扰，其中预期接收器听到两个或更多传输的重叠组合。在存在具有冲突的不同时间偏移量的多个观测的情况下(例如，如果分组重传也冲突，或者如果存在到发射机的具有不同传播延迟的协作接收器)，可以采用之字形[1]解码。本文分析了加性高斯白噪声(AWGN)信道中两个接收节点和两个同时发送端的Z字形译码性能。我们还给出了一个锯齿形译码的软判决版本，并证明了它是最优的MAP判决规则。
Simultaneous transmissions from different nodes in a network can result in multiuser interference in which an intended receiver hears the overlapping combination of two or more transmissions. In the case where there are multiple observations with different time offsets of a collision (e.g., if the packet retransmissions also collide, or if there is a cooperating receiver with different propagation delays to the transmitters), zigzag [1] decoding can be employed. In this paper, we analyze the performance of zigzag decoding for the case of two receiving nodes with two simultaneous transmitters in an additive white Gaussian noise (AWGN) channel. We also present a soft-decision version of zigzag decoding and show that it is the optimal MAP decision rule.