公开(公告)号：US20070202918A1

公开(公告)日：2007-08-30

申请号：US10584334

申请日：2004-12-22

申请人： Sung-Moon Shin ,  Seung-Chan Bang

发明人： Sung-Moon Shin ,  Seung-Chan Bang

IPC分类号： H04M1/00

CPC分类号： H04W24/00 ,  H04Q2213/13098 ,  H04Q2213/1316 ,  H04Q2213/13294 ,  H04Q2213/13349

摘要： Disclosed is a downlink signal configuring method and device, and synchronization and cell search method and device using the same in a mobile communication system. A downlink frame has plural symbols into which pilot subcarriers are distributively arranged with respect to time and frequency axes. Initial symbol synchronization and initial frequency synchronization are estimated by using a position at which autocorrelation of a cyclic prefix of a downlink signal and a valid symbol of the downlink is maximized, and cell search and integer-times frequency synchronization are estimated by using pilot subcarriers included in the estimated symbol. Fine symbol synchronization, fine frequency synchronization, and downlink frame synchronization is estimated by using an estimated cell search result. Downlink frequency and time tracking is performed, cell tracking is performed by using a position set of pilot subcarriers inserted into the downlink frame, fine symbol synchronization tracking and fine frequency synchronization tracking are repeated by using the pilot subcarriers to perform the frequency and time tracking of the downlink frame.

摘要翻译： 公开了一种下行链路信号配置方法和装置，以及在移动通信系统中使用其的同步和小区搜索方法及装置。 下行链路帧具有多个符号，导频子载波相对于时间轴和频率轴分布布置在其中。 通过使用下行链路信号的循环前缀和下行链路的有效符号的自相关被最大化的位置来估计初始符号同步和初始频率同步，并且通过使用包括的导频子载波来估计小区搜索和整数倍的频率同步 在估计的符号。 通过使用估计的小区搜索结果来估计精细符号同步，精细频率同步和下行链路帧同步。 执行下行链路频率和时间跟踪，通过使用插入到下行链路帧中的导频子载波的位置集来执行小区跟踪，通过使用导频子载波来重复精细符号同步跟踪和精细频率同步跟踪，以执行频率和时间跟踪 下行帧。

公开(公告)号：US20070133446A1

公开(公告)日：2007-06-14

申请号：US11636448

申请日：2006-12-11

申请人： Chan-Ho Yoon ,  Hee-Jung Yu ,  Eun-Young Choi ,  Jung-Bo Son ,  Il-Gu Lee ,  Deuk-Su Lyu ,  Tae-hyun Jeon ,  Seung-Wook Min ,  Kwhang-Hyun Ryu ,  Kyoung-Ju Noh ,  Yun-Joo Kim ,  Kyoung-Hee Song ,  Sok-Kyu Lee ,  Seung-chan Bang ,  Seung-Ku Hwang

发明人： Chan-Ho Yoon ,  Hee-Jung Yu ,  Eun-Young Choi ,  Jung-Bo Son ,  Il-Gu Lee ,  Deuk-Su Lyu ,  Tae-hyun Jeon ,  Seung-Wook Min ,  Kwhang-Hyun Ryu ,  Kyoung-Ju Noh ,  Yun-Joo Kim ,  Kyoung-Hee Song ,  Sok-Kyu Lee ,  Seung-chan Bang ,  Seung-Ku Hwang

IPC分类号： H04B7/00

CPC分类号： H04L1/0026 ,  H04L1/0003 ,  H04L1/0059 ,  H04L1/0075 ,  H04L1/08 ,  H04L1/188

摘要： The present invention relates to a transmitting apparatus of a wireless communication system, and a method thereof. The transmitting apparatus monitors receiving of response data for data that has been transmitted to a receiving end, and sets a first parameter for counting successful receipts according to receiving on the response data. The transmitting apparatus demodulates the response data and extracts the number of demodulated data that satisfies a first set value. Subsequently, it is determined whether the first parameter satisfies a second set value and the number of demodulated data satisfies a predetermined ratio of a referential amount of packets. According to the present invention, an efficient transmission mode for a channel state can be provided with reference to an extracted number of soft-decision data from response data received at a receiving end. In addition, a transmission mode can be determined by using only response data according to the present invention.

摘要翻译： 无线通信系统的发送装置技术领域本发明涉及无线通信系统的发送装置及其方法。 发送装置监视已经发送到接收端的数据的响应数据的接收，并且根据对响应数据的接收，设置用于计数成功收据的第一参数。 发送装置解调响应数据，并提取满足第一设定值的解调数据的数量。 随后，确定第一参数是否满足第二设定值，并且解调数据的数量满足分组的参考量的预定比率。 根据本发明，可以参照从接收端接收到的响应数据提取的软判决数据数来提供用于信道状态的有效传输模式。 此外，可以通过仅使用根据本发明的响应数据来确定传输模式。

公开(公告)号：US20070115802A1

公开(公告)日：2007-05-24

申请号：US11635927

申请日：2006-12-08

申请人： Hee-Jung Yu ,  Eun-Young Choi ,  Chan-Ho Yoon ,  Jung-Bo Son ,  Il-Gu Lee ,  Deuk-Su Lyu ,  Tae-hyun Jeon ,  Seung-Wook Min ,  Sok-Kyu Lee ,  Seung-Chan Bang ,  Seung-Ku Hwang

发明人： Hee-Jung Yu ,  Eun-Young Choi ,  Chan-Ho Yoon ,  Jung-Bo Son ,  Il-Gu Lee ,  Deuk-Su Lyu ,  Tae-hyun Jeon ,  Seung-Wook Min ,  Sok-Kyu Lee ,  Seung-Chan Bang ,  Seung-Ku Hwang

IPC分类号： H04J11/00

CPC分类号： H04L5/0046 ,  H04L27/2613 ,  H04L27/2627 ,  H04L27/2649 ,  H04W28/14 ,  H04W72/04 ,  H04W84/12

摘要： The present invention relates to an orthogonal frequency division multiplexing wireless local area network (LAN) transmitting/receiving system for providing expanded service coverage, and a method thereof. According to the present invention, first OFDM modulation is performed for an even-numbered time, and second OFDM modulation is performed by changing subcarrier allocation positions of first OFDM modulated symbols for an odd-numbered time. In addition, a transmitting frame including a plurality of signal fields according to the first and second OFDM modulation is transmitted. The receiving system determines a format configuration of the received frame to determine whether a signal field is repeatedly generated in the frame. When it is determined that the signal field is not repeatedly generated, corresponding demodulation is performed. When it is determined that the signal field is repeatedly performed, the signal field is demodulated by using first bit allocation information and is demodulated by using second bit allocation information having a 1/2 value of the first bit allocation information. A data field is demodulated according to the demodulated signal field.

摘要翻译： 本发明涉及一种用于提供扩展业务覆盖的正交频分复用无线局域网（LAN）发送/接收系统及其方法。 根据本发明，对于偶数时间执行第一OFDM调制，并且通过改变奇数时间的第一OFDM调制符号的副载波分配位置来执行第二OFDM调制。 此外，发送包括根据第一和第二OFDM调制的多个信号字段的发送帧。 接收系统确定接收到的帧的格式配置，以确定帧中是否重复产生信号字段。 当确定信号域不被重复产生时，执行相应的解调。 当确定重复执行信号场时，通过使用第一比特分配信息解调信号场，并且通过使用具有第一比特分配信息的1/2值的第二比特分配信息进行解调。 根据解调信号字段对数据字段进行解调。

公开(公告)号：US07184409B2

公开(公告)日：2007-02-27

申请号：US10133418

申请日：2002-04-29

申请人： Yong-Su Lee ,  Youn-Ok Park ,  Seung-Chan Bang ,  Eui-Hoon Jeong ,  Ik-Soo Jin

发明人： Yong-Su Lee ,  Youn-Ok Park ,  Seung-Chan Bang ,  Eui-Hoon Jeong ,  Ik-Soo Jin

IPC分类号： H04B7/216

CPC分类号： H04L1/0059 ,  H04L1/0046 ,  H04L1/0054 ,  H04L1/0061

摘要： A blind rate detection method in an asynchronous mobile communication system comprises: restoring data when a path selection (PS) value at a last bit's possible position satisfies a PS condition; determining whether a SER satisfies a SER condition when no error occurs in a CRC; determining whether to update a minimum value of PS values when the SER satisfies the SER condition; setting a PS value of the last bit's possible position as the minimum value of the PS values and the last bit's possible position as a last detection position when updating the minimum value; and repeating the above steps until the last bit's possible position reaches a maximum value, and outputting the last detection position when the last bit's possible position becomes the maximum value.

摘要翻译： 异步移动通信系统中的盲率检测方法包括：当最终位的可能位置的路径选择（PS）值满足PS条件时，恢复数据; 当CRC中没有发生错误时，确定SER是否满足SER条件; 当SER满足SER条件时，确定是否更新PS值的最小值; 将最后一位的可能位置的PS值设置为PS值的最小值，并将最后一位的可能位置设置为更新最小值时的最后一个检测位置; 并重复上述步骤，直到最后一位的可能位置达到最大值，并且当最后一位的可能位置变为最大值时输出最后一个检测位置。

公开(公告)号：US20060280229A1

公开(公告)日：2006-12-14

申请号：US11303846

申请日：2005-12-16

申请人： Il-Gyu Kim ,  Young-Hoon Kim ,  Seung-Chan Bang ,  Chan-Bok Jeong ,  Sang-Woo Nam

发明人： Il-Gyu Kim ,  Young-Hoon Kim ,  Seung-Chan Bang ,  Chan-Bok Jeong ,  Sang-Woo Nam

IPC分类号： H04B1/00 ,  H04L1/02

CPC分类号： H04L1/0631 ,  H04B1/707 ,  H04J13/12 ,  H04L1/0643

摘要： Provided are a space code block coding and spreading apparatus and method for transmission diversity, a Code Division Multiple Access (CDMA) diversity transmitter using it, and a CDMA mobile station receiver for receiving a transmission diversity signal, which are capable of improving the performance of system in wireless channel environments by allowing a transmission diversity to be made within one symbol interval in a CDMA communication system. The inventive space code block coding and spreading apparatus for transmission diversity in a CDMA communication system, comprises an encoder for generating a predetermined number of different transmission data with respect to a plurality of modulation symbols inputted during one modulation symbol interval, an orthogonal code generator for producing orthogonal codes, a spreader for spreading each of the transmission data generated from the encoder using the orthogonal codes generated from the orthogonal code generator, and a combining unit for combining the transmission data spread at the spreader to provide combined data for each transmission antenna path so that a transmission diversity is made within one modulation symbol interval.

摘要翻译： 提供了一种用于发送分集的空间码块编码和扩展装置和方法，使用它的码分多址（CDMA）分集发射机，以及用于接收发射分集信号的CDMA移动台接收机，其能够提高 通过在CDMA通信系统中允许在一个符号间隔内进行发送分集，在无线信道环境中进行。 用于CDMA通信系统中的发送分集的本发明空间编码块编码和扩展装置包括：编码器，用于相对于在一个调制符号间隔期间输入的多个调制符号产生预定数量的不同传输数据;正交码发生器， 产生正交码;扩展器，用于使用从正交码发生器产生的正交码扩展从编码器生成的每个发送数据;以及组合单元，用于组合在扩展器上扩展的发送数据，以提供每个发送天线路径的组合数据 使得在一个调制符号间隔内进行发送分集。

公开(公告)号：US20060126765A1

公开(公告)日：2006-06-15

申请号：US11240546

申请日：2005-09-30

申请人： Eun-Jeong Shin ,  Nam-Il Kim ,  Young-Hoon Kim ,  Seung-Chan Bang ,  Sang-Woo Nam

发明人： Eun-Jeong Shin ,  Nam-Il Kim ,  Young-Hoon Kim ,  Seung-Chan Bang ,  Sang-Woo Nam

IPC分类号： H04L27/06

CPC分类号： H04J3/0608

摘要： Provided is an apparatus and method for detecting timing errors based on characteristics of cyclic correlation. The apparatus and method can detect the timing errors of many users by using the cyclic characteristics of a midamble code at a time and detects the timing errors based on the characteristics of cyclic correlation to reduce the time required for detecting the users and lower the complexity in terms of Hardware. The apparatus includes a detection section controller, a register, a midamble generator, a midamble shifter, an accumulator, an adder, a shift register and a timing error detector.

公开(公告)号：US20050140546A1

公开(公告)日：2005-06-30

申请号：US10974272

申请日：2004-10-26

申请人： Hyeong-Geun Park ,  Seung-Chan Bang ,  Soo-Bum Kim

发明人： Hyeong-Geun Park ,  Seung-Chan Bang ,  Soo-Bum Kim

IPC分类号： H01Q21/00 ,  G01S7/40 ,  H01Q3/26 ,  H01Q3/22

CPC分类号： H01Q3/267 ,  G01S7/4008

摘要： Disclosed are a transmitting and receiving apparatus and method in an adaptive array antenna system capable of real-time calibration. Transfer functions in the transmitting and receiving apparatus are estimated by injecting a calibration signal to each of transmit and receive channels and analyzing the signals that has passed through the transmit and receive channels. An RF CW sinusoidal signal of a single frequency can be used as the calibration signal to simplify a process of signal processing in a baseband. In addition, in the calibration of the receiving apparatus, gains of all receive channels are controlled using an identical signal. Thus, a relative transfer function characteristic of the receive channels is constant irrespective of the gains of the receivers.

摘要翻译： 公开了一种能够进行实时校准的自适应阵列天线系统中的发射和接收装置和方法。 通过向每个发送和接收信道注入校准信号并分析已经通过发送和接收信道的信号来估计发送和接收设备中的传送功能。 可以使用单个频率的RF CW正弦信号作为校准信号，以简化基带中的信号处理过程。 此外，在接收装置的校准中，使用相同的信号来控制所有接收信道的增益。 因此，与接收机的增益无关，接收信道的相对传递函数特性是恒定的。

公开(公告)号：US20050136980A1

公开(公告)日：2005-06-23

申请号：US10977059

申请日：2004-10-29

申请人： Il-Gyu Kim ,  Hye-Kyung Jwa ,  Seung-Chan Bang

发明人： Il-Gyu Kim ,  Hye-Kyung Jwa ,  Seung-Chan Bang

IPC分类号： G01S19/05 ,  G01S19/11 ,  G01S19/21 ,  G01S19/29 ,  G01S19/46 ,  H01Q1/24 ,  H01Q3/24 ,  H01Q3/26 ,  H04B1/38 ,  H04B7/06 ,  H04B7/08

CPC分类号： H04B7/086 ,  H01Q1/246 ,  H01Q3/24 ,  H01Q3/2605 ,  H04B7/0617

摘要： Disclosed is a transceiver for a base station with a smart antenna having a plurality of antennas. The transceiver comprises: a multipath searching unit for searching multipath delay information for each demodulation channel; a demodulating unit for forming an adaptive beam for each demodulation channel by using the multipath delay information for each demodulation channel for receiving signals and performing demodulation to the received signals and outputting at least one adaptive beam weight vector; a controlling unit for selecting at least one downlink beam index for each channel; and a modulating unit for selecting the downlink switched beams and forming switching beam for modulating signals of each channel and outputting the modulated signals in downlink.

摘要翻译： 公开了一种具有具有多个天线的智能天线的基站的收发器。 收发器包括：多路径搜索单元，用于搜索每个解调信道的多径延迟信息; 解调单元，用于通过使用用于接收信号的每个解调信道的多径延迟信息和对接收到的信号执行解调并输出至少一个自适应波束权重向量来为每个解调信道形成自适应波束; 控制单元，用于为每个信道选择至少一个下行链路波束索引; 以及用于选择下行链路切换波束并形成用于调制每个信道的信号的切换波束并在下行链路中输出调制信号的调制单元。

公开(公告)号：US06614771B1

公开(公告)日：2003-09-02

申请号：US09181970

申请日：1998-10-29

申请人： Tae Joong Kim ,  Seung Chan Bang ,  Ki Chul Han

发明人： Tae Joong Kim ,  Seung Chan Bang ,  Ki Chul Han

IPC分类号： H04B7216

CPC分类号： H04J3/16 ,  H04B1/707 ,  H04B7/2637 ,  H04W74/0833

摘要： An apparatus for making a plurality of terminals have a random access to the reverse common channel system in CDMA, comprises code synchronization detection information broadcast means provided in the base station for broadcasting the state information of a channel card in real time for the terminals to recognize the code synchronization detection when the code synchronization of a certain data is acquired through performing the code synchronization of the preambles transmitted from the terminals through the reverse common channel, and data transmission determination means provided in the terminals for making the terminals to have attempted data transmission in the same time slot with the data of the code synchronization detection continuously transmit data and the other terminals stop data transmission.

摘要翻译： 用于制造多个终端的装置具有对CDMA中的反向公共信道系统的随机接入，包括在基站中设置的用于广播信道卡的状态信息以便终端识别的代码同步检测信息广播装置 通过执行通过反向公共信道从终端发送的前同步码的代码同步来获取特定数据的代码同步时的代码同步检测，以及在终端中设置的使终端进行数据传输的数据发送确定装置 在同一时隙与代码同步检测的数据连续发送数据，其他终端停止数据传输。

公开(公告)号：US09450796B2

公开(公告)日：2016-09-20

申请号：US12523125

申请日：2008-01-04

申请人： Moon-Sik Lee ,  Hye-Kyung Jwa ,  Hyoseok Yi ,  Young-Hoon Kim ,  Seung-Chan Bang

发明人： Moon-Sik Lee ,  Hye-Kyung Jwa ,  Hyoseok Yi ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC分类号： H04L27/00 ,  H04L27/26

CPC分类号： H04L27/2607 ,  H04L69/323 ,  H04W74/006

摘要： Provided is a method of forming a random access preamble structure for an extended cell radius in a cellular system, the method including: generating a cyclic prefix (CP), which is the sum of a maximum delay spread and the maximum round trip delay according to the extended cell; generating a preamble sequence part. The method is used to form a preamble structure for an extended cell radius from among random access preamble structures transmitted when initial synchronization is achieved, when synchronization is lost, or when a handover is performed, during a random access process of the cellular system.

摘要翻译： 提供了一种在蜂窝系统中形成用于扩展小区半径的随机接入前导码结构的方法，所述方法包括：根据根据本发明的方法，生成循环前缀（CP），其是最大延迟扩展和最大往返延迟之和 扩展单元格 生成前导序列部分。 该方法用于在实现初始同步时，当同步丢失时，或者当在蜂窝系统的随机接入过程中执行切换时，从发送的随机接入前同步码结构中形成用于扩展小区半径的前导码结构。