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    • 7. 发明申请
    • DETECTING METHOD OF MULTIPLE-INPUT MULTIPLE-OUTPUT SYSTEM
    • 多输入多输出系统的检测方法
    • WO2007064131A1
    • 2007-06-07
    • PCT/KR2006/005058
    • 2006-11-28
    • ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEKIM, Kyeong-PyoLEE, Woo-YongLEE, HyunKIM, Jin-KyeongKIM, Yong-Sun
    • KIM, Kyeong-PyoLEE, Woo-YongLEE, HyunKIM, Jin-KyeongKIM, Yong-Sun
    • H04L27/26
    • H04B7/0848H04B7/0851H04B7/0854
    • A detecting method of a multiple-input multiple-output system includes the steps of: a) canceling interference between transmit signals by assigning weight values to signals received through a plurality of antennas, and determining K optimal antenna signals through channel gain estimation; b) calculating L transmit signal estimation values by quantizing the optimal antenna signals according to a predefined constellation size of L; c) calculating L residual antenna signals, in which interference of the transmit signal estimation values is removed from the received signals using the L Tx signal estimation values; d) calculating L residual transmit signal estimation values by quantizing the L residual antenna signals according to the predefined constellation size; and e) creating K×L estimated transmit signal candidate groups by repeating the calculation of the L residual transmit signal estimation values for each of the K optimal antenna signals, and detecting transmit signals from the estimated transmit signal candidate groups.
    • 多输入多输出系统的检测方法包括以下步骤:a)通过对通过多个天线接收的信号分配权重值来消除发射信号之间的干扰,并通过信道增益估计确定K个最佳天线信号; b)根据L的预定星座大小量化最佳天线信号来计算L个发射信号估计值; c)计算使用L Tx信号估计值从接收信号中去除发射信号估计值的干扰的L个残余天线信号; d)通过根据预定义的星座大小量化L个残余天线信号来计算L个残差发射信号估计值; 以及e)通过重复对所述K个最优天线信号中的每一个的所述L个残差发送信号估计值的计算,并且从所估计的发送信号候选组中检测发送信号来创建K×L个估计发送信号候选组。
    • 9. 发明申请
    • METHOD OF CONSTRUCTING TREE NETWORK
    • 构建树网络的方法
    • WO2008038938A1
    • 2008-04-03
    • PCT/KR2007/004559
    • 2007-09-19
    • ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEKIM, Yong-SunKIM, Se-HanKIM, Jin-KyeongKIM, Nae-SooPYO, Cheol-Sig
    • KIM, Yong-SunKIM, Se-HanKIM, Jin-KyeongKIM, Nae-SooPYO, Cheol-Sig
    • H04L12/28
    • H04L12/66
    • Provided is a method of constructing a tree network which includes a first node. The method comprises: (a) the first node determining if there is a child node and requesting a parent node to allow the first node to withdraw if there is no child node; (b) selecting a child node based on remaining amounts of battery power of each child node if there are child nodes of the first node; (c) exchanging positions of the first node and the selected child node and requesting the parent node to allow the first node to withdraw if the child node selected in operation (b) does not have child nodes; and (d) repeating operations (b) and (c) if the child node selected in operation (b) has child nodes. The present invention solves the problem of decreasing lifetimes of upper nodes that consume more battery power than lower nodes due to more traffic transmission and reception.
    • 提供了一种构建包括第一节点的树网络的方法。 该方法包括:(a)第一节点确定是否存在子节点,并且如果不存在子节点则请求父节点允许第一节点撤销; (b)如果存在第一节点的子节点,则基于每个子节点的电池功率的剩余量选择子节点; (c)如果在操作(b)中选择的子节点没有子节点,则交换所述第一节点和所选择的子节点的位置并请求所述父节点允许所述第一节点撤销; 和(d)如果在操作(b)中选择的子节点具有子节点,则重复操作(b)和(c)。 本发明解决了由于更多的业务传输和接收而降低了消耗更多电池电力的上层节点的寿命的问题,比下层节点更多。