专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2012071715A1 SYSTEM AND METHOD FOR IMPROVING RECEIVER SENSITIVITY OF A DD-OFDM SYSTEM WITHOUT USING FREQUENCY GUARD BAND 审中-公开
标题翻译：用于改善DD-OFDM系统接收灵敏度的系统和方法，不使用频带
公开(公告)号：WO2012071715A1
公开(公告)日：2012-06-07
申请号：PCT/CN2010/079316
申请日：2010-12-01
申请人： ZTE (USA) Inc. , YU, Jianjun
发明人： YU, Jianjun
IPC分类号： H04L1/00 , H03M13/27 , H03M13/29
CPC分类号： H04L1/0011 , H03M13/2957 , H03M13/31 , H03M13/6362 , H04L1/0013 , H04L1/0041 , H04L1/0066 , H04L1/0068 , H04L1/04 , H04L27/2634 , H04L27/2697
摘要： The present invention discloses a system and method for improving receiver sensitivity of an DD-OFDM system without using frequency guard band. The method comprises: interleaving input data to the DD-OFDM system to generate intereaved data; encoding the input data with a first recursive systematic convolutional code to generate a first recursive systematic convolutional encoded data; encoding the intereaved data with a second recursive systematic convolutional code to generate a second recursive systematic convolutional encoded data; puncturing the first recursive systematic convolutional encoded data and the second recursive systematic convolutional encoded data to generate a parity sequence; and combining the input data with the parity sequence to generate coded DD-OFDM data; wherein the parity sequence is generated by using different puncturing rates for different OFDM subcarriers, so as to obtain higher spectral efficiency. The system and the method can improve the receiver sensitivity and the spectral efficiency without frequency guard band by using the ACE and interleaver techniques in the DD-OFDM system.
摘要翻译：本发明公开了一种在不使用频率保护频带的情况下提高DD-OFDM系统的接收灵敏度的系统和方法。该方法包括：将输入数据交织到DD-OFDM系统以产生互补数据; 用第一递归系统卷积码对输入数据进行编码，以产生第一递归系统卷积编码数据; 用第二递归系统卷积码对相互之间的数据进行编码，以生成第二递归系统卷积编码数据; 刺穿第一递归系统卷积编码数据和第二递归系统卷积编码数据以产生奇偶校验序列; 并将输入数据与奇偶校验序列组合以产生编码的DD-OFDM数据; 其中通过对不同OFDM子载波使用不同的打孔率来生成奇偶校验序列，以便获得更高的频谱效率。该系统和方法可以通过使用DD-OFDM系统中的ACE和交织器技术来提高接收机灵敏度和频率效率，而无频带保护频带。

2. 发明申请

WO2009006812A1 一种网格编码调制码的编码调制、译码方法及装置审中-公开
公开(公告)号：WO2009006812A1
公开(公告)日：2009-01-15
申请号：PCT/CN2008/071349
申请日：2008-06-18
申请人：华为技术有限公司 , 方冬梅
发明人：方冬梅
IPC分类号： H03M13/25
CPC分类号： H03M13/256 , H03M13/25 , H03M13/27 , H03M13/31
摘要： Encoding modulation method, decoding method and apparatus of trellis coded modulation code are disclosed. The encoding method comprises steps of establishing a QAM constellation picture which is TCM constellation map picture with modulation level exceeding 4; making encoded bit groups of the constellation picture with I route and Q route to be arranged periodically and repeatedly in the I route and Q route; making un-encoded bit groups which correspond to encoded bit groups with period repeat arrangement to be different from each other; obtaining constellation index including the encoded and un-encoded bit groups according to the original bit information groups; determining a signal point as finally transmitted TCM signal in the constellation map. The symbols of parallel route are mapped evenly on the Q route of the constellation map because the encoded bit groups are arranged periodically and repeatedly, thus the performance of TCM code is improved.

3. 发明申请

WO2008147162A1 METHOD OF TRANSMITTING AND RECEIVING A SIGNAL AND APPARATUS FOR TRANSMITTING AND RECEIVING A SIGNAL 审中-公开
标题翻译：发送和接收信号的方法和发送和接收信号的装置
公开(公告)号：WO2008147162A1
公开(公告)日：2008-12-04
申请号：PCT/KR2008/003090
申请日：2008-06-02
申请人： LG ELECTRONICS INC. , MOON, Sang Chul , KWAK, Kook Yeon , SONG, Won Gyu , JUN, Jung Sig , KO, Woo Suk
发明人： MOON, Sang Chul , KWAK, Kook Yeon , SONG, Won Gyu , JUN, Jung Sig , KO, Woo Suk
IPC分类号： H04N7/64 , H04N7/015
CPC分类号： H04N19/89 , H03M13/1102 , H03M13/15 , H03M13/152 , H03M13/155 , H03M13/251 , H03M13/255 , H03M13/2732 , H03M13/2906 , H03M13/31 , H03M13/618 , H04H20/33 , H04H60/07
摘要： A method of transmitting/receiving a signal and an apparatus for transmitting/receiving a signal are disclosed. A first modulation frame is built such that a pilot symbol interval in which the first pilot symbols are positioned at only odd carriers and a data symbol interval in which the mapped data symbols are positioned are periodically repeated, and a second modulation frame is built such that a pilot symbol interval in which the first pilot symbols are positioned at only even carriers and a data symbol interval in which the mapped data symbols are positioned are periodically repeated. The first modulation frame and the second modulation frame are transmitted via respective antennas and the respective signals including the first modulation frame and the second modulation frame are respectively received via two antennas. Accordingly, it is possible to improve a data transfer rate and improve signal transmission/reception performance of the transmitting/receiving system.
摘要翻译：公开了发送/接收信号的方法以及发送/接收信号的装置。第一调制帧被构建为使得第一导频符号仅位于奇数载波的导频符号间隔和映射的数据符号所在的数据符号间隔被周期性地重复，并且构建第二调制帧，使得周期性地重复其中第一导频符号仅位于偶数载波的导频符号间隔和映射的数据符号所在的数据符号间隔。通过各个天线发送第一调制帧和第二调制帧，分别经由两个天线接收包括第一调制帧和第二调制帧的各个信号。因此，可以提高发送/接收系统的数据传送速率和提高信号发送/接收性能。

4. 发明申请

WO2008054937A2 TURBO INTERFERENCE SUPPRESSION IN COMMUNICATION SYSTEMS 审中-公开
标题翻译：通信系统中的TURBO干扰抑制
公开(公告)号：WO2008054937A2
公开(公告)日：2008-05-08
申请号：PCT/US2007078824
申请日：2007-09-19
申请人： MOTOROLA INC , YU XIAOYONG , KLOOS MICHAEL N
发明人： YU XIAOYONG , KLOOS MICHAEL N
IPC分类号： H03M13/00
CPC分类号： H03M13/31 , H03M13/258 , H03M13/2957 , H03M13/3776 , H03M13/3905 , H03M13/6331 , H03M13/6544
摘要： Disclosed is a method and communication device for suppressing interference. The method comprises performing, with a turbo decoder (314), at least one turbo decoding attempt (1106) on a received signal (1104). The turbo decoding attempt generates at least one whole word code bit therefrom (1108). The whole word code bit (1108) corresponds to a group of bits comprising a transmitted symbol. The method determines if the whole word code bit (1108) has a confidence level exceeding a given threshold (1110). If the whole word code bit (1108) does have a confidence level exceeding the given threshold, the whole code word bit is selected for use in data symbol recovery (1114).
摘要翻译：公开了一种用于抑制干扰的方法和通信装置。该方法包括使用turbo解码器（314）在接收信号（1104）上执行至少一个turbo解码尝试（1106）。 turbo解码尝试从其产生至少一个完整的字码位（1108）。整个字码位（1108）对应于包括发送符号的一组位。该方法确定整个字码位（1108）是否具有超过给定阈值的置信度（1110）。如果整个字码位（1108）确实具有超过给定阈值的置信度，则整数码字位被选择用于数据符号恢复（1114）。

5. 发明申请

WO2005099153A1 FEHLERBEHANDLUNG BEI DATENÜBERTRAGUNG ÜBER EIN KOMMUNIKATIONSSYSTEM 审中-公开
标题翻译：通过通信系统进行数据传输的错误处理
公开(公告)号：WO2005099153A1
公开(公告)日：2005-10-20
申请号：PCT/EP2005/051557
申请日：2005-04-07
申请人： ROBERT BOSCH GMBH , BOEHL, Eberhard , BOEHL, Michael
发明人： BOEHL, Eberhard , BOEHL, Michael
IPC分类号： H04L1/00
CPC分类号： H03M13/21 , H03M13/31
摘要： Verfahren und Vorrichtung zur Fehlerbehandlung bei der Übertragung von codierten Daten in Form wenigstens eines Datenwortes über ein Kommunikationssystem (900, 901, 902), wobei zu dem wenigstens einen Datenwort ein Codedatenwort nach einer vorgebbaren Codiervorschrift ausgewählt wird, wobei die Daten als Bits, die zwei verschiedene Werte, Einsen und Nullen, annehmen können dargestellt werden, wobei wenigstens eine laufende digitale Summe derart gebildet wird, dass eine aufsummierte Differenz der Gesamtzahl der Einsen und der Gesamtzahl der Nullen wenigstens über das Codedatenwort gebildet wird (907) und diese laufende digitale Summe übertragen wird (901), wobei die laufende digitale Summe zum folgenden Codedatenwort bestimmt und mit der dann übertragenen verglichen wird, wobei bei Abweichung auf Fehler erkannt wird.
摘要翻译：用于通过通信系统（900,901,902）以至少一个数据字的形式传输编码数据中的错误处理的方法和装置，其中所述代码数据项是可预定给所述至少一个数据字编码数据可以被表示为具有两个不同值1和0的位，其中至少一个当前数字和被形成为使得1的总数和总次数的总和差至少在代码数据字上形成零（907），并且发送该当前数字和（901），当前数字和被确定为下一个代码数据字并与随后发送的数据字进行比较，并且如果检测到错误是

6. 发明申请

WO2003065591A2 A METHOD AND DECODING APPARATUS USING LINEAR CODE WITH PARITY CHECK MATRICES COMPOSED FROM CIRCULANTS 审中-公开
标题翻译：使用线性代码的方法和解码设备与从CIRCULANS组成的奇偶校验矩阵
公开(公告)号：WO2003065591A2
公开(公告)日：2003-08-07
申请号：PCT/US2002/017081
申请日：2002-05-30
申请人： SEAGATE TECHNOLOGY LLC
发明人： KUZNETSOV, Alexander, V. , VASIC, Bane , KURTAS, Erozan
IPC分类号： H03M13/39
CPC分类号： H03M13/31 , H03M7/46 , H03M13/1117 , H03M13/112 , H03M13/1131 , H03M13/1134 , H03M13/1137 , H03M13/116 , H03M13/1515 , H03M13/2906 , H03M13/658
摘要： The present invention provides a novel method and apparatus (215) for decoding digital information transmitted through the communication channel or recorded on a recording medium. The method and apparatus are preferably applied in the systems where data is encoded using regular LDPC codes with parity check matrices composed from circulants (a matrix is called a circulant if all its column or row are cyclic shifts each other).
摘要翻译：本发明提供了一种用于解码通过通信信道发送或记录在记录介质上的数字信息的新颖的方法和装置（215）。该方法和装置优选地应用于使用具有由循环组成的奇偶校验矩阵的常规LDPC码来编码数据的系统（如果矩阵被称为循环，如果其所有列或行都是循环移位）。

7. 发明申请

WO2002073812A1 誤り訂正符号化方法、誤り訂正復号化方法、誤り訂正符号化装置、誤り訂正復号化装置审中-公开
标题翻译：错误校正编码方法，错误校正解码方法，错误校正编码装置和错误校正解码装置
公开(公告)号：WO2002073812A1
公开(公告)日：2002-09-19
申请号：PCT/JP2002/002403
申请日：2002-03-14
申请人：松下電器産業株式会社 , ソニー株式会社 , 江島直樹 , 西尾歳朗 , 川村明久 , 鈴木秀和 , 岡本裕成 , 広江哲也 , 村越象
发明人：江島直樹 , 西尾歳朗 , 川村明久 , 鈴木秀和 , 岡本裕成 , 広江哲也 , 村越象
IPC分类号： H03M13/27
CPC分类号： G11B20/1866 , H03M13/2707 , H03M13/31 , H04L1/0041 , H04L1/0045 , H04L1/0071 , H04N21/43632
摘要： An error correction encoding method and an error correction decoding method capable of detecting an audio signal error and correcting the error when multiplexing a video signal and an audio signal to be transmitted by the DVI. An error correction code is added to each of the digital audio signal samples and n (n is an integer not smaller than 2) continuous digital audio signal samples added with the correction code are subjected to interleaving, thereby generating an encoded audio signal.
摘要翻译：一种纠错编码方法和纠错解码方法，能够检测音频信号错误，并且在复用视频信号和通过DVI发送的音频信号时纠正错误。对每个数字音频信号样本添加纠错码，并且n（n是不小于2的整数）附加校正码的连续数字音频信号样本进行交织，从而生成编码音频信号。

8. 发明申请

WO01037280A1 ROGUE PACKET DETECTION AND CORRECTION METHOD FOR DATA STORAGE DEVICE 审中-公开
标题翻译：用于数据存储设备的ROGUE分组检测和校正方法
公开(公告)号：WO01037280A1
公开(公告)日：2001-05-25
申请号：PCT/US1999/027309
申请日：1999-11-17
IPC分类号： G06F11/10 , G06F12/16 , G11B20/10 , G11B20/18 , H03M13/15 , H03M13/29 , H03M13/31
CPC分类号： H03M13/09 , G11B20/18 , H03M13/151 , H03M13/1515 , H03M13/29 , H03M13/2909 , H03M13/2918 , H03M13/2921 , H03M13/293 , H03M13/31
摘要： A method for detecting the location of falsely detected "good" data, or "rogue", packets in a data buffer (10) is presented. A segemnt-level CRC is generated (14, 614) over, and associated with, a buffer segment (11), and recorded along with the segment data (15) onto a storage medium. During data recovey, only packets (5) that pass a packet-level error detection test are allowed in the data buffer (10). Once a data segment (11) is complete, a segment-level CRC test (14) is performed over the recovered segment-level CRC and the entire recovered segment data. The segment (11) contains a rogue packet if the segment-level CRC test fails. Reed-Solomon syndromes are generated and used to locate and optionally correct the rogue packets.
摘要翻译：提供了一种用于在数据缓冲器（10）中检测错误检测到的“良好”数据或“流氓”数据包的位置的方法。在缓冲区段（11）上生成分段级CRC（14,614）并与其相关联，并与分段数据（15）一起记录到存储介质上。在数据恢复期间，在数据缓冲器（10）中仅允许通过分组级错误检测测试的分组（5）。一旦数据段（11）完成，对恢复的段级CRC和整个恢复的段数据执行段级CRC测试（14）。如果段级CRC测试失败，则段（11）包含流氓包。生成Reed-Solomon综合征并用于定位和可选地纠正流氓包。

9. 发明申请

WO99044295A1 FULL AND HALF-RATE SIGNAL SPACE DETECTION FOR CHANNELS WITH A TIME-VARYING MTR 审中-公开
标题翻译：具有时变频道的通道的全速和高速信号空间检测
公开(公告)号：WO99044295A1
公开(公告)日：1999-09-02
申请号：PCT/US1998/018851
申请日：1998-09-09
IPC分类号： G11B20/10 , G11B20/14 , H03M5/14 , H03M13/23 , H03M13/31 , H03M13/12
CPC分类号： G11B20/1426 , H03M5/145 , H03M13/31
摘要： A detector (400) of the present invention is provided to detect data values with a data signal that is sampled to provide temporally separated data samples. A first detector portion (462, 452, 458) is configured to determine the location of a first sample vector in a first signal space. A second detector portion (454, 456, 460) is configured to determine the location of a second sample vector in a second signal space. The second detector portion determines the location by using a logic statement to combine a plurality of location indicators. Each location indicator provides the location of the second sample vector relative to a respective boundary surface. The form of the logic statement is independent of the values of the location indicators. In addition, each location indicator is independent of all other location indicators.
摘要翻译：提供本发明的检测器（400），用于利用被采样的数据信号来检测数据值，以提供时间上分离的数据样本。第一检测器部分（462,452,458）被配置为确定第一信号空间中的第一采样矢量的位置。第二检测器部分（454,446,460）被配置为确定第二信号空间中的第二采样矢量的位置。第二检测器部分通过使用逻辑语句来组合多个位置指示符来确定位置。每个位置指示器提供第二样本向量相对于相应边界表面的位置。逻辑语句的形式与位置指示符的值无关。此外，每个位置指示器都独立于所有其他位置指示器。

10. 发明申请

WO98052287A2 SIGNAL SPACE DETECTOR FOR CHANNELS UTILIZING A CODE HAVING TIME VARYING CONSTRAINTS 审中-公开
标题翻译：使用具有时间变化约束的代码的信道的信号空间检测器
公开(公告)号：WO98052287A2
公开(公告)日：1998-11-19
申请号：PCT/US1998/009752
申请日：1998-05-13
IPC分类号： G11B20/10 , G11B20/14 , H03M5/14 , H03M13/31 , H04B
CPC分类号： G11B20/1426 , G11B20/10009 , H03M5/145 , H03M13/31
摘要： Data is detected from a disc (112) in a disc drive (110) and provided as a sampled read signal including data samples provided in a plurality of time intervals. A signal space detector (320) is configured to detect the data, wherein the data is encoded according to a code having a time varying maximum transition run constraint which varies between a first and a second constraint over a plurality of time intervals. The detector (320) is configured to receive an input sample including a first plurality of terms indicative of one of a plurality of possible data symbols. One of the plurality of possible data symbols is eliminated based on the first constraint when the input sample then being detected is constrained by the first constraint, to provide a second plurality of remaining possible data symbols. An estimated data value is determined which corresponds to the input sample then being detected, by determining which of the second plurality of remaining possible data symbols is within a predetermined range of the input symbol.
摘要翻译：从盘驱动器（110）中的盘（112）检测数据，并将其提供为包括以多个时间间隔提供的数据样本的采样读信号。信号空间检测器（320）被配置为检测数据，其中根据在多个时间间隔上在第一和第二约束之间变化的时变最大过渡运行约束的代码对数据进行编码。检测器（320）被配置为接收包括指示多个可能数据符号之一的第一多个项的输入样本。当所检测的输入样本被第一约束约束时，基于第一约束消除多个可能数据符号中的一个，以提供第二多个剩余可能的数据符号。通过确定第二多个剩余可能数据符号中的哪一个在输入符号的预定范围内，确定对应于被检测的输入样本的估计数据值。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式