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    Method for Constructing Frame Preamble in Ofdm Wireless Communication System, and Method for Acquiring Frame Synchronization and Searching Cells Using Preamble
    1.
    发明申请
    Method for Constructing Frame Preamble in Ofdm Wireless Communication System, and Method for Acquiring Frame Synchronization and Searching Cells Using Preamble 审中-公开
    在OFDM无线通信系统中构造帧前缀的方法及使用前导码获取帧同步和搜索单元的方法

    公开(公告)号：US20080043858A1

    公开(公告)日：2008-02-21

    申请号：US10584716

    申请日：2004-10-27

    申请人： Hyoung-Soo Lim ,  Choong-Il Yeh ,  Yu-Ro Lee ,  Dong-Seung Kwon ,  Seung-Ku Hwang

    发明人： Hyoung-Soo Lim ,  Choong-Il Yeh ,  Yu-Ro Lee ,  Dong-Seung Kwon ,  Seung-Ku Hwang

    IPC分类号： H04K1/10

    CPC分类号： H04J11/00 ,  H04L27/2613 ,  H04L27/2656 ,  H04L27/2675

    摘要： Disclosed are a method for constructing a frame preamble in an OFDM wireless communication system, and a method for acquiring frame synchronization and searching cells using the preamble. The preamble is arranged at the beginning of a frame and constructed of a pattern repeated an integer number of times, and a CP. The pattern has a length shorter than a single OFDM symbol interval. The length of the repetitive pattern is not limited to an integer number of times a single OFDM symbol interval. Frame synchronization can be acquired by observing cross-correlation of a received signal and reference patterns and detecting the moment when the absolute value of the cross-correlation exceeds a predetermined threshold. Otherwise, frame synchronization can be acquired by observing auto-correlation of the received signal using repeated patterns included in the received signal and detecting the moment when the absolute value of the auto-correlation becomes the maximum value.

    摘要翻译： 公开了一种在OFDM无线通信系统中构造帧前同步码的方法，以及用于使用前置码获取帧同步和搜索小区的方法。 前导码被布置在帧的开始处，并且由重复整数次的模式和CP构成。 该模式的长度短于单个OFDM符号间隔。 重复模式的长度不限于单个OFDM符号间隔的整数倍。 可以通过观察接收信号和参考模式的互相关，并且检测互相关绝对值超过预定阈值的时刻来获取帧同步。 否则，通过使用包含在接收信号中的重复模式来观察接收信号的自相关，并且检测自相关的绝对值成为最大值的时刻，可以获取帧同步。

    Method for Allocating Data and Pilots, and Transmitting Method and Device and Receiving Method and Device Using the Same in Orthogonal Frequency Division Multiple Access System
    5.
    发明申请
    Method for Allocating Data and Pilots, and Transmitting Method and Device and Receiving Method and Device Using the Same in Orthogonal Frequency Division Multiple Access System 有权
    分配数据和导频的方法，以及正交频分多址系统的发送方法及装置及其接收方法及装置

    公开(公告)号：US20070263743A1

    公开(公告)日：2007-11-15

    申请号：US10583593

    申请日：2004-07-22

    申请人： Yu-Ro Lee ,  Jonge-Ee Oh ,  Choong-Il Yeh ,  Hyoung-Soo Lim ,  Dong-Seung Kwon

    发明人： Yu-Ro Lee ,  Jonge-Ee Oh ,  Choong-Il Yeh ,  Hyoung-Soo Lim ,  Dong-Seung Kwon

    IPC分类号： H04B7/02

    CPC分类号： H04B7/12 ,  H04L5/0044 ,  H04L5/0048 ,  H04W72/00

    摘要： Disclosed is a method for allocating data and pilots, a transmitting method and device, a receiving method and device in an OFDMA system. A terminal partitions subcarrier groups and symbols from an uplink channel based on a basic pilot pattern generated by a specific reference, receives at least one subchannel based on the partitioned subcarrier groups and symbols, hops the subcarrier groups caused by the subchannel according to hopping patterns, allocates data, and differently positions the pilots per subcarrier group based on the basic pilot pattern. Accordingly, the probability of pilot collision between adjacent cells is reduced, and accuracy of channel estimation is increased through boosting the pilot subcarrier power.

    摘要翻译： 公开了一种在OFDMA系统中分配数据和导频的方法，发送方法和设备，接收方法和设备。 终端基于由特定基准产生的基本导频模式，从上行链路信道分割子载波组和符号，根据划分的子载波组和符号接收至少一个子信道，根据跳频图案跳过由子信道引起的子载波组， 分配数据，并且基于基本导频模式不同地定位每个子载波组的导频。 因此，相邻小区之间的导频冲突的概率降低，并且通过提升导频副载波功率来增加信道估计的精度。

    Method for allocating data and pilots, and transmitting method and device and receiving method and device using the same in orthogonal frequency division multiple access system
    7.
    发明授权
    Method for allocating data and pilots, and transmitting method and device and receiving method and device using the same in orthogonal frequency division multiple access system 有权
    用于分配数据和导频的方法，以及在正交频分多址系统中发送方法和装置以及使用其的接收方法和装置

    公开(公告)号：US07796695B2

    公开(公告)日：2010-09-14

    申请号：US10583593

    申请日：2004-07-22

    申请人： Yu-Ro Lee ,  Jong-Ee Oh ,  Choong-II Yeh ,  Hyoung-Soo Lim ,  Dong-Seung Kwon

    发明人： Yu-Ro Lee ,  Jong-Ee Oh ,  Choong-II Yeh ,  Hyoung-Soo Lim ,  Dong-Seung Kwon

    IPC分类号： H04K1/10

    CPC分类号： H04B7/12 ,  H04L5/0044 ,  H04L5/0048 ,  H04W72/00

    摘要： Disclosed is a method for allocating data and pilots, a transmitting method and device, a receiving method and device in an OFDMA system. A terminal partitions subcarrier groups and symbols from an uplink channel based on a basic pilot pattern generated by a specific reference, receives at least one subchannel based on the partitioned subcarrier groups and symbols, hops the subcarrier groups caused by the subchannel according to hopping patterns, allocates data, and differently positions the pilots per subcarrier group based on the basic pilot pattern. Accordingly, the probability of pilot collision between adjacent cells is reduced, and accuracy of channel estimation is increased through boosting the pilot subcarrier power.

    摘要翻译： 公开了一种在OFDMA系统中分配数据和导频的方法，发送方法和设备，接收方法和设备。 终端基于由特定基准产生的基本导频模式，从上行链路信道分割子载波组和符号，根据划分的子载波组和符号接收至少一个子信道，根据跳频图案跳过由子信道引起的子载波组， 分配数据，并且基于基本导频模式不同地定位每个子载波组的导频。 因此，相邻小区之间的导频冲突的概率降低，并且通过提升导频副载波功率来增加信道估计的精度。

    Signal transmitting and receiving device and method of mobile communication system
    8.
    发明授权
    Signal transmitting and receiving device and method of mobile communication system 有权
    信号发射和接收装置及移动通信系统的方法

    公开(公告)号：US07757155B2

    公开(公告)日：2010-07-13

    申请号：US11660152

    申请日：2004-11-10

    申请人： Kwang-Jae Lim ,  Hyoung-Soo Lim ,  Choomg-Il Yeh ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Dong-Seung Kwon

    发明人： Kwang-Jae Lim ,  Hyoung-Soo Lim ,  Choomg-Il Yeh ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Dong-Seung Kwon

    IPC分类号： H03M13/00

    CPC分类号： H04L27/2608

    摘要： Disclosed is a signal transmission method in a mobile communication system. Unequal error protection (UEP) ratios are determined so that the bits may have different received qualities according to the weights of the bits. The bits are repeated by a bit sequence repeater (210) according to the determined UEP ratios to generate a repeated bit sequence having a predetermined number of bits. The generated repeated bit, sequence is interleaved by an interleaver (220) and the interleaved bit sequence is symbol-mapped by a symbol-mapper (230) to generate a transmission symbol sequence, and the generated transmission symbol sequence is transmitted by the transmitter to a receiver. Furthermore, also a corresponding signal reception method, a corresponding signal transmitter and a corresponding signal receiver are disclosed.

    摘要翻译： 公开了一种移动通信系统中的信号传输方法。 确定不相等的误差保护（UEP）比，使得比特可以根据比特的权重具有不同的接收质量。 根据确定的UEP比例，比特由比特序列中继器（210）重复以产生具有预定比特数的重复比特序列。 所生成的重复比特序列由交织器（220）进行交织，并且交织的比特序列由符号映射器（230）进行符号映射以产生传输符号序列，并且所生成的传输符号序列由发射机发射到 接收器 此外，还公开了相应的信号接收方法，相应的信号发射机和对应的信号接收机。

    Signal Transmitting and Receiving Device and Method of Mobile Communication System
    9.
    发明申请
    Signal Transmitting and Receiving Device and Method of Mobile Communication System 有权
    信号发射与接收装置及移动通信系统的方法

    公开(公告)号：US20070296616A1

    公开(公告)日：2007-12-27

    申请号：US11660152

    申请日：2004-11-10

    申请人： Kwang-Jae Lim ,  Hyoung-Soo Lim ,  Choomg-II Yeh ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Dong-Seung Kwon

    发明人： Kwang-Jae Lim ,  Hyoung-Soo Lim ,  Choomg-II Yeh ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Dong-Seung Kwon

    IPC分类号： H04B7/24 ,  H03M13/35 ,  H04Q7/38

    CPC分类号： H04L27/2608

    摘要： Disclosed is a signal transmission method in a mobile communication system. Unequal error protection (UEP) ratios are determined so that the bits may have different received qualities according to the weights of the bits. The bits are repeated by a bit sequence repeater (210) according to the determined UEP ratios to generate a repeated bit sequence having a predetermined number of bits. The generated repeated bit, sequence is interleaved by an interleaver (220) and the interleaved bit sequence is symbol-mapped by a symbol-mapper (230) to generate a transmission symbol sequence, and the generated transmission symbol sequence is transmitted by the transmitter to a receiver. Furthermore, also a corresponding signal reception method, a corresponding signal transmitter and a corresponding signal receiver are disclosed.

    摘要翻译： 公开了一种移动通信系统中的信号传输方法。 确定不相等的误差保护（UEP）比，使得比特可以根据比特的权重具有不同的接收质量。 根据确定的UEP比例，比特由比特序列中继器（210）重复以产生具有预定比特数的重复比特序列。 所生成的重复比特序列由交织器（220）进行交织，并且交织的比特序列由符号映射器（230）进行符号映射以产生传输符号序列，并且所生成的传输符号序列由发射机发射到 接收器 此外，还公开了相应的信号接收方法，相应的信号发射机和对应的信号接收机。

    Apparatus and method for measuring received signal strength indicator, and recording medium storing program embodying the same method
    10.
    发明授权
    Apparatus and method for measuring received signal strength indicator, and recording medium storing program embodying the same method 失效
    用于测量接收信号强度指示器的装置和方法，以及体现相同方法的记录介质存储程序

    公开(公告)号：US07738544B2

    公开(公告)日：2010-06-15

    申请号：US10588101

    申请日：2004-06-23

    申请人： Choong-Il Yeh ,  Hyoung-Soo Lim ,  Dong-Sung Kwon

    发明人： Choong-Il Yeh ,  Hyoung-Soo Lim ,  Dong-Sung Kwon

    IPC分类号： H04B3/46

    CPC分类号： H04B17/318 ,  H04B17/26

    摘要： An apparatus for estimating a RSSI of a signal transmitted/received in a wireless network, the apparatus including an ADC quantizing one of I-branch and Q-branch signals, extracted from the signal, into a digital signal; an absolute value calculating unit calculating an absolute value of the digital signal quantized by the ADC and outputting a result; an accumulate unit accumulating an output of the absolute calculating unit for a given time period and outputting a result; a square unit squaring an output of the accumulate unit and outputting a result; and a multiply unit multiplying an output of the square unit by a given value and outputting a result, the given value being determined based on the number of input bits, an input clip level, and input resistance of the ADC when the probability density functions at input and output signals of the ADC are approximately Gaussian with zero mean.

    摘要翻译： 一种用于估计在无线网络中发送/接收的信号的RSSI的装置，所述装置包括将从所述信号提取的I分支和Q分支信号中的一者量化为数字信号的ADC; 绝对值计算单元，计算由ADC量化的数字信号的绝对值并输出结果; 累积单元，累积绝对计算单元的输出给定时间并输出结果; 平方单元对累加单元的输出进行平方并输出结果; 以及乘法单元将平方单元的输出乘以给定值并输出结果，当概率密度作用在ADC上时，给定值基于输入比特数，输入剪辑电平和ADC的输入电阻来确定 ADC的输入和输出信号近似为高斯，零均值。