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    • 27. 发明申请
    • SOFT DEMAPPING METHOD AND APPARATUS AND COMMUNICATION SYSTEM THEREOF
    • 软拆解方法及其装置及通信系统
    • US20110261908A1
    • 2011-10-27
    • US12897797
    • 2010-10-05
    • Hsiao-Lan ChiangPang-An TingChih-Yu Chen
    • Hsiao-Lan ChiangPang-An TingChih-Yu Chen
    • H04L27/06
    • H04L25/03242H04L25/03171H04L25/03318
    • An exemplary embodiment of the present disclosure provides a soft demapping method. In the soft demapping method, each shortest Euclidean distance of the Euclidean distances from all possible signal vectors corresponding to the bits which are not obtained during a signal detection to a received signal vector is calculated by using channel state information (CSI) and modulation coefficients, so as to establish a complete bit vector-shortest distance mapping table, and a log likelihood ratio (LLR) of each bit is obtained according to the bit vector-shortest distance mapping table. The soft demapping method can be applied along with different signal detection techniques to decode a received signal vector into a bit vector, wherein the signal detection techniques include a maximum likelihood detection (MLD) technique and a sphere decoding (SD) technique.
    • 本公开的示例性实施例提供了软解映射方法。 在软解映射方法中,通过使用信道状态信息(CSI)和调制系数来计算欧几里德距离与对信号检测期间未获得的比特相对应的所有可能的信号矢量与接收信号矢量的最短欧几里德距离, 建立一个完整的位向量最短距离映射表,根据比特向量最短距离映射表获得每个比特的对数似然比(LLR)。 软解映射方法可以与不同的信号检测技术一起应用,以将接收的信号向量解码为比特向量,其中信号检测技术包括最大似然检测(MLD)技术和球体解码(SD)技术。
    • 30. 发明申请
    • APPARATUSES AND METHODS FOR WIRELESS COMMUNICATIONS USING A PERMUTATION SEQUENCE
    • 使用传输序列进行无线通信的设备和方法
    • US20110158185A1
    • 2011-06-30
    • US12649028
    • 2009-12-29
    • Chia-Lung TSAIYu-Tao HsiehPang-An TingJen-Yuan Hsu
    • Chia-Lung TSAIYu-Tao HsiehPang-An TingJen-Yuan Hsu
    • H04W72/04
    • H04L5/003H04L5/0096H04W72/04
    • A method for data transmissions in a wireless communication system includes: allocating resources for data to be transmitted; providing a seed number from the communication system; setting, based on the seed number, at least one parameter for a pseudo-random mapper having an input variable and an output variable; initializing an array with a number of base elements; increasing a current value of the input variable by a current value of a counter; and calculating a value of the output variable based on the pseudo-random mapper and the increased value of the input variable. The method further includes: swapping a first base element and a second base element in the array, the first base element being identified based on the current value of the counter, and the second base element being identified based on the value of the output variable; performing permutation on the resources by using the array as a permutation sequence; and transmitting the data.
    • 一种用于在无线通信系统中进行数据传输的方法包括:为要发送的数据分配资源; 从通信系统提供种子编号; 基于种子编号设置具有输入变量和输出变量的伪随机映射器的至少一个参数; 初始化具有多个基本元素的数组; 通过计数器的当前值增加输入变量的当前值; 以及基于所述伪随机映射器和所述输入变量的增加值来计算所述输出变量的值。 该方法还包括:交换阵列中的第一基本元素和第二基本元素,基于计数器的当前值识别第一基元,并且基于输出变量的值识别第二基元; 通过使用该阵列作为置换序列对资源执行置换; 并发送数据。