公开(公告)号：US08630278B2

公开(公告)日：2014-01-14

申请号：US12682796

申请日：2008-08-04

申请人： Jae Hyun Seo ,  Hyoung Soo Lim ,  Heung Mook Kim ,  Yong Tae Lee ,  Sung Ik Park ,  Jong Soo Lim ,  Soo In Lee

发明人： Jae Hyun Seo ,  Hyoung Soo Lim ,  Heung Mook Kim ,  Yong Tae Lee ,  Sung Ik Park ,  Jong Soo Lim ,  Soo In Lee

IPC分类号： H04J1/00 ,  H04J4/00 ,  G06F15/16

CPC分类号： H04L45/74 ,  H04H20/30

摘要： In a digital broadcasting signal transmission system, a transmission frame includes a frame body and a frame header, and the frame body is divided into a plurality of sub-bands in the frequency domain and is divided into a plurality of symbols in the time domain. The frame header is provided in the former part of the transmission frame and is transmitted with a signal in the time domain. The frame body includes a plurality of services, and the services respectively receive at least one sub-band and at least one symbol. The frame header includes information on the plurality of services, and information on the plurality of services includes information on the sub-band and the symbol to which the services are allocated, information on channel encoding levels of the services, and information on digital modulation levels of the services.

摘要翻译： 在数字广播信号传输系统中，传输帧包括帧体和帧头，并且帧体被划分成频域中的多个子带，并且在时域中被划分为多个符号。 帧头在传输帧的前一部分中提供，并且在时域中以信号发送。 帧体包括多个服务，并且服务分别接收至少一个子带和至少一个符号。 帧头包括关于多个服务的信息，并且关于多个服务的信息包括关于子带和分配服务的符号的信息，关于服务的信道编码级别的信息以及关于数字调制级别的信息 的服务。

公开(公告)号：US08520751B2

公开(公告)日：2013-08-27

申请号：US12514121

申请日：2007-10-20

申请人： Sung-Ik Park ,  Hyoung-Soo Lim ,  Heung-Mook Kim ,  Jong-Soo Lim ,  Soo-In Lee

发明人： Sung-Ik Park ,  Hyoung-Soo Lim ,  Heung-Mook Kim ,  Jong-Soo Lim ,  Soo-In Lee

IPC分类号： H04L27/28 ,  H04B15/00

CPC分类号： H04L27/28

摘要： Provided is a channel estimation apparatus and method using a linear/nonlinear average in a wireless communication system. The present research provides a channel estimation apparatus and method for estimating a channel between a transmitter and a receiver from a pilot-inserted OFDM signal and linearly or nonlinearly averaging the estimating channel, thereby preventing the equalizer performance from being degraded by noise component of the estimated channel and noise amplification caused by deep fading. The channel estimation apparatus includes: a channel estimation unit configured to estimate a channel coefficient of a channel between a transmitter and a receiver from a pilot-inserted carrier signal according to pilot arrangement; and a linear/nonlinear averaging unit configured to linearly or nonlinearly averaging the estimated channel coefficient, thereby preventing an equalizer performance from being degraded by noise component existing in the channel and noise amplification caused by deep fading.

摘要翻译： 提供了一种在无线通信系统中使用线性/非线性平均的信道估​​计装置和方法。 本研究提供了一种信道估计装置和方法，用于从导频插入OFDM信号估计发射机和接收机之间的信道，并且对估计信道进行线性或非线性平均，从而防止均衡器性能被估计的噪声分量降低 通道和噪声放大引起的深度衰落。 信道估计装置包括：信道估计单元，被配置为根据导频布置从导频插入载波信号估计发射机和接收机之间的信道的信道系数; 以及线性/非线性平均单元，被配置为对所估计的信道系数进行线性或非线性平均化，从而防止均衡器性能由存在于信道中的噪声分量和由深衰落引起的噪声放大降低。

公开(公告)号：US20100220720A1

公开(公告)日：2010-09-02

申请号：US12682796

申请日：2008-08-04

申请人： Jae Hyun Seo ,  Hyoung Soo Lim ,  Heung Mook Kim ,  Yong Tae Lee ,  Sung Ik Park ,  Jong Soo Lim ,  Soo In Lee

发明人： Jae Hyun Seo ,  Hyoung Soo Lim ,  Heung Mook Kim ,  Yong Tae Lee ,  Sung Ik Park ,  Jong Soo Lim ,  Soo In Lee

IPC分类号： H04L12/56 ,  G06F15/16

CPC分类号： H04L45/74 ,  H04H20/30

摘要： In a digital broadcasting signal transmission system, a transmission frame includes a frame body and a frame header, and the frame body is divided into a plurality of sub-bands in the frequency domain and is divided into a plurality of symbols in the time domain. The frame header is provided in the former part of the transmission frame and is transmitted with a signal in the time domain. The frame body includes a plurality of services, and the services respectively receive at least one sub-band and at least one symbol. The frame header includes information on the plurality of services, and information on the plurality of services includes information on the sub-band and the symbol to which the services are allocated, information on channel encoding levels of the services, and information on digital modulation levels of the services.

摘要翻译： 在数字广播信号传输系统中，传输帧包括帧体和帧头，并且帧体被划分成频域中的多个子带，并且在时域中被划分为多个符号。 帧头在传输帧的前一部分中提供，并且在时域中以信号发送。 帧体包括多个服务，并且服务分别接收至少一个子带和至少一个符号。 帧头包括关于多个服务的信息，并且关于多个服务的信息包括关于子带和分配服务的符号的信息，关于服务的信道编码级别的信息以及关于数字调制级别的信息 的服务。

公开(公告)号：US20100061471A1

公开(公告)日：2010-03-11

申请号：US12514121

申请日：2007-10-20

申请人： Sung-Ik Park ,  Hyoung-Soo Lim ,  Heung-Mook Kim ,  Jong-Soo Lim ,  Soo-In Lee

发明人： Sung-Ik Park ,  Hyoung-Soo Lim ,  Heung-Mook Kim ,  Jong-Soo Lim ,  Soo-In Lee

IPC分类号： H04L27/28 ,  H04B15/00

CPC分类号： H04L27/28

摘要： Provided is a channel estimation apparatus and method using a linear/nonlinear average in a wireless communication system. The present research provides a channel estimation apparatus and method for estimating a channel between a transmitter and a receiver from a pilot-inserted OFDM signal and linearly or nonlinearly averaging the estimating channel, thereby preventing the equalizer performance from being degraded by noise component of the estimated channel and noise amplification caused by deep fading. The channel estimation apparatus includes: a channel estimation unit configured to estimate a channel coefficient of a channel between a transmitter and a receiver from a pilot-inserted carrier signal according to pilot arrangement; and a linear/nonlinear averaging unit configured to linearly or nonlinearly averaging the estimated channel coefficient, thereby preventing an equalizer performance from being degraded by noise component existing in the channel and noise amplification caused by deep fading.

摘要翻译： 提供了一种在无线通信系统中使用线性/非线性平均的信道估​​计装置和方法。 本研究提供了一种信道估计装置和方法，用于从导频插入OFDM信号估计发射机和接收机之间的信道，并且对估计信道进行线性或非线性平均，从而防止均衡器性能被估计的噪声分量降低 通道和噪声放大引起的深度衰落。 信道估计装置包括：信道估计单元，被配置为根据导频布置从导频插入载波信号估计发射机和接收机之间的信道的信道系数; 以及线性/非线性平均单元，被配置为对所估计的信道系数进行线性或非线性平均化，从而防止均衡器性能由存在于信道中的噪声分量和由深衰落引起的噪声放大降低。

公开(公告)号：US20080267111A1

公开(公告)日：2008-10-30

申请号：US12094549

申请日：2006-11-24

申请人： Hyoung-Soo Lim ,  Dong-Seung Kwon ,  Chung-Gu Kang ,  Hyun-Seok Ryu

发明人： Hyoung-Soo Lim ,  Dong-Seung Kwon ,  Chung-Gu Kang ,  Hyun-Seok Ryu

IPC分类号： H04B7/14

CPC分类号： H04B7/0671 ,  H04B7/15592

摘要： In a method for transmitting data from a first node to a second node through first and second relay units in a wireless communication system: a) a first symbol is transmitted from the first node to the second node and the first relay unit during a first time slot section; b) the first symbol, which is received from the first node, is transmitted from the first relay unit to the second node during a second time slot section; c) a second symbol is transmitted from the first node to the second node and the second relay unit during the second time slot section; and d) the second symbol, which is received from the first node, is transmitted from the second relay unit to the second node during a third time slot section.

摘要翻译： 一种用于在无线通信系统中通过第一和第二中继单元从第一节点传送数据到第二节点的方法：a）第一符号在第一时间从第一节点发射到第二节点和第一中继单元 槽部分 b）在第二时隙部分期间从第一节点接收的第一符号从第一中继单元发送到第二节点; c）在第二时隙部分期间从第一节点向第二节点和第二中继单元发送第二符号; 以及d）在第三时隙部分期间从第一中继单元向第二节点发送从第一节点接收的第二符号。

公开(公告)号：US20080259903A1

公开(公告)日：2008-10-23

申请号：US12214180

申请日：2008-06-16

申请人： Hyoung-Soo Lim ,  Woo-Yong Choi ,  Yong-Sun Kim ,  Jae-Young Ahn

发明人： Hyoung-Soo Lim ,  Woo-Yong Choi ,  Yong-Sun Kim ,  Jae-Young Ahn

IPC分类号： H04J3/26

CPC分类号： H04W76/021 ,  H04L1/0001 ,  H04L1/0083 ,  H04L1/1621 ,  H04L1/1664 ,  H04L5/023 ,  H04L27/2601 ,  H04L27/2608 ,  H04L2001/0093 ,  H04W8/26 ,  H04W28/04 ,  H04W72/042 ,  H04W72/0453 ,  H04W76/10 ,  H04W76/11 ,  H04W76/30

摘要： The MAC frame in a wireless communication system includes a terminal ID allocated to each of multiple terminals. At least one connection ID is allocated to each terminal having the terminal ID, and sub-carrier allocation information is allocated to each connection having the connection ID. The sub-carrier allocation information includes a sub-carrier allocation status for each sub-carrier, and the number of allocated information bits for each sub-carrier. The sub-carrier allocation status and the number of allocated information bits for each sub-carrier can be allocated, by sub-carriers, to the sub-carrier allocation information using a same number of bits; or the information on the sub-carrier allocation status is first allocated to the sub-carrier allocation information and the number of allocated information bits for each sub-carrier is allocated.

公开(公告)号：US20080240276A1

公开(公告)日：2008-10-02

申请号：US11667711

申请日：2005-08-10

申请人： Young-Seog Song ,  Seong-Rag Kim ,  In-Kyeong Choi ,  Choong-ll Yeh ,  Seung-Joon Lee ,  Hyoung-Soo Lim ,  Kwang-Jae Lim ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Dong-Seung Kwon ,  Seung-Ku Hwang ,  Chung-Yong Lee ,  Myeong-Cheol Shin

发明人： Young-Seog Song ,  Seong-Rag Kim ,  In-Kyeong Choi ,  Choong-ll Yeh ,  Seung-Joon Lee ,  Hyoung-Soo Lim ,  Kwang-Jae Lim ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Dong-Seung Kwon ,  Seung-Ku Hwang ,  Chung-Yong Lee ,  Myeong-Cheol Shin

IPC分类号： H04L5/12 ,  H04L27/28

CPC分类号： H04B7/061 ,  H04B7/0669 ,  H04B7/0691 ,  H04B7/08 ,  H04L1/0003 ,  H04L1/0637 ,  H04L1/0675

摘要： The present invention relates to a multi-input multi-output (MIMO) system for enhancing transmission performance. The MIMO system uses space-time encoding and transmit antenna selection methods, and includes a transmitter (100) and a receiver (200). The transmitter (100) includes N transmit antennas (130-1, 130-4) that are more than M tansrni antennas (130-1, 130-3) used for transmitting a signal to space channel, selects the M transmit antennas (130-1, 130-3) among the N transmit antennas (130-3 130-4), and transmits symbol by space-time encoding the symbol. The receiver (200) includes M receive antenna (120-1, 210-2) for receiving a signal from the space channel, detects an information symbol by using the signal received through the receive antenna (210-1, 210-2), generates transmit antenna selection information for selecting M transmit antennas (130-1, 130-3) among transmit antennas (i30-1, . . . 7130-4) with reference to a channel estimate, and returns the information to the transmitter.

摘要翻译： 本发明涉及用于增强传输性能的多输入多输出（MIMO）系统。 MIMO系统使用时空编码和发射天线选择方法，并且包括发射机（100）和接收机（200）。 发射机（100）包括比用于将信号发射到空间信道的M多个天线（130-1,30-3）多的N个发射天线（130-1,140-4），选择M个发射天线（130 -1,130-3），并且通过对该符号进行时空编码来发送符号。 接收器（200）包括用于从空间信道接收信号的M个接收天线（120-1,210-2），通过使用通过接收天线（210-1,210-2）接收的信号来检测信息符号， 生成用于参考信道估计在发射天线（i 30-1，...，7130-4）中选择M个发射天线（130-1,130-3）的发射天线选择信息，并将该信息返回给发射机。

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。

公开(公告)号：US20070140104A1

公开(公告)日：2007-06-21

申请号：US11521171

申请日：2006-09-14

申请人： Hyoung-Soo Lim ,  Dong-Seung Kwon

发明人： Hyoung-Soo Lim ,  Dong-Seung Kwon

IPC分类号： H04J11/00 ,  H04J3/06

CPC分类号： H04L27/2657 ,  H04L27/0014 ,  H04L27/2656 ,  H04L27/2662 ,  H04L27/2679 ,  H04L2027/0046 ,  H04L2027/0067

摘要： The present invention relates to a method for timing acquisition and carrier frequency offset estimation of an OFDM communication system and an apparatus using the same. For this purpose the present invention provides a method for calculating at least one auto-correlation and calculating an observation value by performing a sliding sum on the at least one auto-correlation, and calculating a peak point of an absolute value of the observation as frame timing. In addition, the present invention provides a method for generating a third OFDM symbol that is generated by delaying a second OFDM symbol, calculating an observation value through the second and third OFDM symbols, and calculating a phase difference from a result of multiplication of the observation value and a conjugate complex value of the observation value such that a carrier frequency offset can be estimated. According to the present invention, the number of OFDM symbols is sufficient for obtaining timing acquisition with high reliability, and the offset estimation algorithm having a lower implementation complexity is provided such that superior performance is expected and carrier frequency offset with high reliability can be achieved.

摘要翻译： 本发明涉及一种用于OFDM通信系统的定时获取和载波频率偏移估计的方法及其使用方法。 为此，本发明提供了一种通过对至少一个自相关执行滑移和来计算至少一个自相关并计算观测值的方法，并且将观测的绝对值的峰值计算为帧 定时。 另外，本发明提供一种生成通过延迟第二OFDM符号而产生的第三OFDM符号的方法，通过第二和第三OFDM符号来计算观测值，并且从观测的乘法结果中计算出相位差 值和观测值的共轭复值，使得可以估计载波频率偏移。 根据本发明，OFDM符号的数量足以获得具有高可靠性的定时获取，并且提供具有较低实现复杂度的偏移估计算法，从而可以期待优异的性能，并且可以实现具有高可靠性的载波频率偏移。

公开(公告)号：US06925113B2

公开(公告)日：2005-08-02

申请号：US09875351

申请日：2001-06-05

申请人： Soo Young Kim ,  Kwang Jae Lim ,  Tae Gon Kwon ,  Hyoung Soo Lim

发明人： Soo Young Kim ,  Kwang Jae Lim ,  Tae Gon Kwon ,  Hyoung Soo Lim

IPC分类号： H04B7/15 ,  H04L1/00 ,  H04L1/20 ,  H04B11/00 ,  H04B1/00 ,  H04B7/185

CPC分类号： H04L1/0015 ,  H04B7/18513 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0066 ,  H04L1/20

摘要： A rain attenuation compensation method that includes estimating a signal-to-noise (S/N) ratio from PSK-modulated receiving signal at a receiving end; predicting a signal-to-noise (S/N) ratio of the next time point on the basis of the signal-to-noise (S/N) ratio values of the past and present time points; and determining which of transmission methods is adequate to the predicted signal-to-noise (S/N) ratio of the next time point. If the switching of the transmission method is determined, a control signal for inquiring the change of the transmission method is transmitted to a transmitting and a receiving end. Data is then transmitted by the switched transmission method.

摘要翻译： 一种雨衰补偿方法，包括从接收端的PSK调制接收信号估计信噪比（S / N）比; 基于过去和现在的时间点的信噪比（S / N）比值来预测下一个时间点的信噪比（S / N）比; 并且确定哪个传输方法对于下一个时间点的预测信噪比（S / N）是足够的。 如果确定了传输方法的切换，则用于询问发送方法的改变的控制信号被发送到发送和接收端。 然后通过切换传输方法传输数据。