公开(公告)号：US07974360B2

公开(公告)日：2011-07-05

申请号：US11440829

申请日：2006-05-24

申请人： Jong Hyeon Park

发明人： Jong Hyeon Park

IPC分类号： H04B7/02 ,  H04B7/08 ,  H04B7/06 ,  H04L27/00

CPC分类号： H04L1/0015 ,  H04B7/0417 ,  H04B7/0608 ,  H04B7/0689 ,  H04B7/0814 ,  H04B7/0871 ,  H04L1/0001 ,  H04L1/06 ,  H04L27/2608

摘要： An embodiment of the present invention is a technique to process signals in a communication system. In one embodiment, a plurality of signal processing units processes signals received from a plurality of antennae. The signal processor units are controlled by operational mode control signals. A channel estimator estimates channel responses using the processed signals according to an operational mode. An equalizer and combiner generates an equalized and combined signal using the received signals and the estimated channel responses. A Carrier to Interference Noise Ratio (CINR) estimator estimates CINR from the equalized and combined signal. The estimated CINR is used to generate the operational mode control signals. In another embodiment, a sub-carrier allocation controller generates sub-carrier allocation signals using an allocation base. A channel status information (CSI) and multiple input multiple output (MIMO) controller generates sub-carrier CSI signals and operational mode control signals using the sub-carrier allocation signals, estimated channel responses provided by a channel estimator, and an estimated CINR provided by an CINR estimator. The operational mode control signals select one of a plurality of antenna paths associated with a plurality of antennae. A transmitter diversity processor generates transmitter diversity signals as a function of at least a mapped signal Mk, the sub-carrier CSI signals, and the operational mode control signals.

摘要翻译： 本发明的实施例是一种在通信系统中处理信号的技术。 在一个实施例中，多个信号处理单元处理从多个天线接收的信号。 信号处理器单元由操作模式控制信号控制。 信道估计器根据操作模式使用经处理的信号估计信道响应。 均衡器和组合器使用接收的信号和估计的信道响应产生均衡和组合的信号。 载波干扰噪声比（CINR）估计器从均衡和组合信号估计CINR。 估计的CINR用于产生操作模式控制信号。 在另一实施例中，子载波分配控制器使用分配基地产生副载波分配信号。 信道状态信息（CSI）和多输入多输出（MIMO）控制器使用子载波分配信号，由信道估计器提供的估计信道响应和估计的信道估计CINR产生副载波CSI信号和操作模式控制信号 CINR估计器。 操作模式控制信号选择与多个天线相关联的多个天线路径之一。 发射机分集处理器产生作为至少映射信号Mk，子载波CSI信号和操作模式控制信号的函数的发射机分集信号。

公开(公告)号：US20100151862A1

公开(公告)日：2010-06-17

申请号：US12543423

申请日：2009-08-18

申请人： Jong Ro Park ,  Doo Seok Kim ,  Jong Hyeon Park

发明人： Jong Ro Park ,  Doo Seok Kim ,  Jong Hyeon Park

IPC分类号： H04W36/00

CPC分类号： H04W36/0083

摘要： This application provides techniques for robust handover to a target base station, based on performing initial ranging with the target base station. The techniques might generally include scanning neighboring base stations (BSs), selecting a target BS for a handover at least based on results of the scanning, performing initial ranging with the target BS, and sending a Handover Request to the target BS.

摘要翻译： 该应用提供了用于基于对目标基站执行初始测距的到目标基站的鲁棒切换的技术。 这些技术通常可以包括扫描相邻基站（BS），至少基于扫描结果选择目标BS进行切换，对目标BS执行初始测距，并向目标BS发送切换请求。

公开(公告)号：US20090290618A1

公开(公告)日：2009-11-26

申请号：US12124955

申请日：2008-05-21

申请人： Je Woo Kim ,  Jong Hyeon Park ,  Tae Ryun Chang ,  Ju Won Park

发明人： Je Woo Kim ,  Jong Hyeon Park ,  Tae Ryun Chang ,  Ju Won Park

IPC分类号： H04B1/38 ,  H04L27/06 ,  H04L27/28 ,  H04B1/10

CPC分类号： H04B7/0871 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0669 ,  H04B7/0689 ,  H04B7/0857

摘要： Certain embodiments of the present disclosure provide a hybrid receiver diversity scheme that involves combining received signals in accordance with a combination of multiple receive diversity schemes. Certain embodiments of the present disclosure provide a hybrid transmit diversity scheme that involves transmitting diversity signals to a receiver according to a transmit diversity scheme selected based on signal quality measurements received from the receiver.

摘要翻译： 本公开的某些实施例提供了一种混合接收机分集方案，其涉及根据多个接收分集方案的组合来组合接收到的信号。 本公开的某些实施例提供了一种混合发射分集方案，其涉及根据从接收机接收的信号质量测量选择的发射分集方案向接收机发送分集信号。

公开(公告)号：US20090175388A1

公开(公告)日：2009-07-09

申请号：US11969724

申请日：2008-01-04

申请人： Tae Ryun Chang ,  Jong Hyeon Park ,  Ju Won Park ,  Bok Tae Sim ,  Chun Woo Lee ,  Je Woo Kim

发明人： Tae Ryun Chang ,  Jong Hyeon Park ,  Ju Won Park ,  Bok Tae Sim ,  Chun Woo Lee ,  Je Woo Kim

IPC分类号： H04L27/06

CPC分类号： H03M13/00 ,  H03M13/3994

摘要： A method and apparatus for decoding encoded data bits of a wireless communication transmission are provided. A set of a-priori bit values corresponding to known bit values of the encoded data bits may be generated. Decoding paths that correspond to decoded data bits that are inconsistent with the a-priori bit values may be removed from the possible decoding paths to consider, and decoding the encoded data bits by selecting a decoding path from remaining decoding paths of the possible decoding paths that were not removed.

摘要翻译： 提供了一种用于解码无线通信传输的编码数据位的方法和装置。 可以生成对应于编码数据位的已知位值的一组先验位值。 可以从可能的解码路径中去除对应于与先验比特值不一致的解码数据比特的解码路径，并且通过从可能的解码路径的剩余解码路径中选择解码路径来对编码数据比特进行解码， 没有删除。

公开(公告)号：US20090175364A1

公开(公告)日：2009-07-09

申请号：US11969349

申请日：2008-01-04

申请人： Jong Hyeon Park ,  Tae Ryun Chang ,  Je Woo Kim

发明人： Jong Hyeon Park ,  Tae Ryun Chang ,  Je Woo Kim

IPC分类号： H04L27/28

CPC分类号： H04L27/2647 ,  H04L5/0046 ,  H04L25/022 ,  H04L2025/03414

摘要： In accordance with a method for processing a received orthogonal frequency division multiple access (OFDMA) signal that comprises a duplicated signal, sub-carriers within the OFDMA signal may be arranged into a duplicated format. The OFDMA signal may be equalized and combined after the sub-carriers have been arranged into the duplicated format. The equalizing and combining may be performed in accordance with a maximum ratio combining (MRC) scheme. The OFDMA signal may be demapped after the equalizing and combining is performed.

摘要翻译： 根据用于处理包括复制信号的接收的正交频分多址（OFDMA）信号的方法，OFDMA信号内的子载波可以被布置为重复格式。 OFDMA信号可以在子载波被布置成重复格式之后被均衡和组合。 可以根据最大比组合（MRC）方案来执行均衡和组合。 在执行均衡和组合之后，可以对OFDMA信号进行解映射。

公开(公告)号：US20090158109A1

公开(公告)日：2009-06-18

申请号：US11956168

申请日：2007-12-13

申请人： Jong Hyeon Park ,  Je Woo Kim ,  Sameer Nanavati ,  James Y. Hurt

发明人： Jong Hyeon Park ,  Je Woo Kim ,  Sameer Nanavati ,  James Y. Hurt

IPC分类号： G08C25/02

CPC分类号： H04L1/1845 ,  H04L1/1812 ,  H04L5/0007

摘要： A method and apparatus for combining retransmitted hybrid automatic repeat-request (HARQ) messages at different stages in an orthogonal frequency-division multiplexing (OFDM)/orthogonal frequency-division multiple access (OFDMA) receiver are provided. The type of HARQ combiner used for a particular channel may depend on a number of selection criteria including the modulation order of the transmission, the number of bits needed for the combined signals, and the headroom in the HARQ buffer. For some embodiments, a combination of different types of HARQ combiners may be designed into a receiver and selected on a per-channel basis. Proper selection of a HARQ combining scheme may reduce the required HARQ buffer size and may provide an increased combining gain when compared to conventional HARQ combining techniques.

摘要翻译： 提供了一种用于在正交频分复用（OFDM）/正交频分多址（OFDMA）接收机中的不同阶段组合重传的混合自动重传请求（HARQ）消息的方法和装置。 用于特定信道的HARQ组合器的类型可以取决于包括传输的调制阶数，组合信号所需的位数以及HARQ缓冲器中的余量的选择标准的数量。 对于一些实施例，可以将不同类型的HARQ组合器的组合设计成接收机并且在每个信道的基础上进行选择。 HARQ组合方案的正确选择可以减少所需的HARQ缓冲器大小，并且与常规HARQ组合技术相比可以提供增加的组合增益。

公开(公告)号：US20090154392A1

公开(公告)日：2009-06-18

申请号：US11955645

申请日：2007-12-13

申请人： Jong Hyeon Park ,  Bok Tae Sim ,  Je Woo Kim ,  Serguei A. Glazko ,  Sameer Nanavati ,  James Y. Hurt

发明人： Jong Hyeon Park ,  Bok Tae Sim ,  Je Woo Kim ,  Serguei A. Glazko ,  Sameer Nanavati ,  James Y. Hurt

IPC分类号： H04Q7/00

CPC分类号： H04L1/1845 ,  H04L1/1812

摘要： A method and apparatus for combining retransmitted hybrid automatic repeat-request (HARQ) messages divided into coding blocks in an orthogonal frequency-division multiplexing (OFDM)/orthogonal frequency-division multiple access (OFDMA) receiver are provided. According to such a coding-block-based HARQ combining scheme, the quality of each coding block may be compared to a threshold to determine whether the decoded bits or the HARQ combined signal should be saved for each coding block for subsequent HARQ iterations. In addition to reducing the required HARQ buffer size while preserving the combining gain, coding-block-based HARQ combining may also provide fast decoding and reduced power consumption when compared to conventional HARQ combining techniques.

摘要翻译： 提供了一种用于组合在正交频分复用（OFDM）/正交频分多址（OFDMA）接收机中被划分为编码块的重传的混合自动重复请求（HARQ）消息的方法和装置。 根据这样的基于编码块的HARQ组合方案，可以将每个编码块的质量与阈值进行比较，以确定是否应为每个编码块保存解码比特或HARQ组合信号以用于后续HARQ迭代。 除了减少所需的HARQ缓冲器大小同时保持组合增益之外，与常规HARQ组合技术相比，基于编码块的HARQ组合还可以提供快速解码和降低的功耗。

公开(公告)号：US20070217526A1

公开(公告)日：2007-09-20

申请号：US11454726

申请日：2006-06-16

申请人： Jong Hyeon Park ,  Je Woo Kim ,  Ju Won Park

发明人： Jong Hyeon Park ,  Je Woo Kim ,  Ju Won Park

IPC分类号： H04K1/10

CPC分类号： H04L27/2665 ,  H04L25/03159 ,  H04L2025/03414 ,  H04L2025/03426

摘要： An apparatus and a method can improve the performance of a smart antenna system for signal processing in the frequency domain. The method includes: performing Fast Fourier Transform (FFT) on a plurality of incoming signals received through antennas according to a predetermined FFT window; detecting a boundary of an OFDM symbol and setting the FFT window with a margin as large as a predetermined FFT window offset with reference to the detected symbol boundary; receiving the FFT window offset and generating an FFT window calibration signal; and multiplying the FFT-processed incoming signals by the FFT window calibration signal. The method can improve the reception performance of a base station by compensating for the multi-path channel by using an RX FEQ coefficient obtained by a receiver of a terminal as an FEQ weight of a transmitter of the terminal. Further, the method can generate a uniform non-directional beam by generating a variable omni-directional beam pattern in a smart antenna system.

摘要翻译： 一种装置和方法可以改善用于频域信号处理的智能天线系统的性能。 该方法包括：根据预定的FFT窗口对通过天线接收的多个输入信号执行快速傅里叶变换（FFT）; 检测OFDM符号的边界，并且参考检测到的符号边界将FFT窗口设置为与预定FFT窗口偏移量一样大的余量; 接收FFT窗口偏移并产生FFT窗口校准信号; 并将经FFT处理的输入信号乘以FFT窗口校准信号。 该方法可以通过使用由终端的接收机获得的RX FEQ系数作为终端的发射机的FEQ权重来补偿多径信道来提高基站的接收性能。 此外，该方法可以通过在智能天线系统中生成可变全向波束图案来生成均匀的无方向波束。

公开(公告)号：US07028246B2

公开(公告)日：2006-04-11

申请号：US10106084

申请日：2002-03-26

申请人： Je-Woo Kim ,  Jong-Hyeon Park ,  Bok-Tae Shim ,  Si-Hyun Bae ,  Kyung-Sup Han

发明人： Je-Woo Kim ,  Jong-Hyeon Park ,  Bok-Tae Shim ,  Si-Hyun Bae ,  Kyung-Sup Han

IPC分类号： H03M13/00

CPC分类号： H04L1/04 ,  H03M13/2703 ,  H03M13/31 ,  H04L1/004 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/0071 ,  H04L1/06 ,  H04L1/08 ,  H04L5/0023 ,  H04L5/0044 ,  H04L25/0204 ,  H04L25/03866 ,  H04L27/2613 ,  H04L27/2614 ,  H04L27/262

摘要： An Orthogonal Frequency Division Multiplexing (OFDM) communiation system and method for improving frequency utilization efficiency. In the system, a Reed-Solomon encoder codes input information data, and ouputs a Reed-Solomon block having a second number of Reed-Solomon symbols, each Reed-Solomon symbol having a first number of Reed-Solomon symbol elements. An interleaver receives the Reed-Solomon block, and disperses the Reed-Solomon symbol elements existing in a specified one Reed-Solomon symbol within the received Reed-Solomon block in the same sub-channel position in a fourth number of sub-channels of each of a third number of consecutive OFDM symbols.

摘要翻译： 一种正交频分复用（OFDM）通信系统及其提高频率利用效率的方法。 在该系统中，Reed-Solomon编码器对输入信息数据进行编码，并且输出具有第二数目Reed-Solomon符号的Reed-Solomon块，每个Reed-Solomon符号具有第一数目的Reed-Solomon符号元素。 交织器接收Reed-Solomon块，并将存在于指定的一个Reed-Solomon符号中的Reed-Solomon符号分散在接收到的Reed-Solomon块中的相同子信道位置中的每个子信道的第四数量的子信道中 的第三数量的连续OFDM符号。

公开(公告)号：US06810020B2

公开(公告)日：2004-10-26

申请号：US09772207

申请日：2001-01-29

申请人： Eun-Ee Cho ,  Ho Kim ,  Jong-Hyeon Park

发明人： Eun-Ee Cho ,  Ho Kim ,  Jong-Hyeon Park

IPC分类号： H04J1100

CPC分类号： H04L5/0048 ,  H04L1/20 ,  H04L5/0007 ,  H04L27/2656

摘要： Disclosed is an apparatus for measuring a bit error rate (BER) in an orthogonal frequency division multiplexing (OFDM) communication system. A transmitter includes a pilot pattern inserter for inserting a first reference pilot pattern in subchannels of input data, and an OFDM modulator for OFDM-modulating the reference pilot pattern-inserted transmission data. A receiver includes a pilot pattern detector for OFDM-demodulating a data symbol received in a frame unit and detecting only a pilot pattern, and a BER operator for comparing the demodulated pilot pattern with a second reference pilot pattern, detecting and accumulating the number of pilot errors, and measuring a bit error rate by dividing the accumulated number of the pilot errors by the number of total received pilot patterns.

摘要翻译： 公开了一种用于测量正交频分复用（OFDM）通信系统中的误码率（BER）的装置。 发射机包括用于在输入数据的子信道中插入第一参考导频模式的导频模式插入器和用于OFDM调制参考导频模式插入传输数据的OFDM调制器。 接收机包括用于OFDM解调以帧单元接收的数据符号并仅检测导频模式的导频模式检测器，以及用于将解调的导频模式与第二参考导频模式进行比较的BER算子，检测和累加导频数 通过将导频误差的累计数除以总接收导频模式的数量来测量误码率。