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91. 发明公开

EP1518326A1 METHOD FOR ITERATIVE DECODER SCHEDULING 有权
标题翻译：迭代译码调度的方法
公开(公告)号：EP1518326A1
公开(公告)日：2005-03-30
申请号：EP03761534.1
申请日：2003-06-27
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： MALM, Peter
IPC分类号： H03M1/00
CPC分类号： H04L1/0051 , H03M13/2975 , H03M13/6306 , H04L1/16 , H04L1/1607 , H04L1/1812 , H04L1/1816 , H04L1/1845 , H04L1/1848
摘要： A method for scheduling a decoding process of coded data blocks transmitted over a link in a communication network. According to the method the coded data block is stored in a queue (71) if all decoders of a cluster (72) of iterative parallel decoders are unavailable. When any of the decoders of the cluster (72) is available the first coded block of the queue (71) is moved to that decoder. Also, according to the method it is possible to combine a stored coded block with a retransmitted coded block, which is decoded with an increased probability for successful decoding. Also, the invention relates to a communication apparatus adapted for carrying out the method according to the invention.
摘要翻译：一种用于调度在通信网络中通过链路传输的编码数据块的解码过程的方法。根据该方法，如果迭代并行解码器的集群（72）的所有解码器都不可用，则编码数据块被存储在队列（71）中。当集群（72）的任何解码器可用时，队列（71）的第一编码块被移动到该解码器。而且，根据该方法，可以将存储的编码块与重传的编码块组合，该编码块以提高的解码成功概率进行解码。而且，本发明涉及适于执行根据本发明的方法的通信设备。

92. 发明公开

EP1512241A1 METHOD OF CORRECTING AN ERRONEOUS FRAME BY A RECEIVER 审中-公开
标题翻译：程序有故障的框架的接收器来纠正
公开(公告)号：EP1512241A1
公开(公告)日：2005-03-09
申请号：EP03722999.4
申请日：2003-05-19
申请人： Koninklijke Philips Electronics N.V.
发明人： LAMY, Catherine , MERIGEAULT, Sandrine
IPC分类号： H04L1/00
CPC分类号： H04L1/0051 , H04L1/0061
摘要： The present invention relates to a method of processing a received data unit (UDR) by a receiver via a network, the method comprising a channel decoding stage (CDEC1, CDEC2) of the received data unit (UDR), intended to deliver a hard bit string (TBD), a transformation stage for transforming said hard bit string into a hard frame (TD), said hard frame comprising at least an error detector code and a test stage (TST) intended to test with said error correcting code if said hard frame (TD) is correct or incorrect. Said method is characterized in that it further comprises a frame correction stage (COR) intended to correct an incorrect frame (TE) into a correct frame (TCo). In the preferred embodiment of the invention said frame correction stage (COR) utilizes soft data delivered by a soft output channel decoding stage (CDEC2). The advantage of such a method is that rejects and retransmissions of frames are avoided.

93. 发明公开

EP1487120A2 Error detection methods in wireless communication systems 有权
标题翻译： Fehlererkennungsverfahren in drahtlosen Kommunikationssystemen
公开(公告)号：EP1487120A2
公开(公告)日：2004-12-15
申请号：EP04018529.0
申请日：2003-03-19
申请人： LUCENT TECHNOLOGIES INC.
发明人： Das, Arnab , Ullah Khan, Farooq , Sampath, Ashwin , Su, Hsuan-Jung
IPC分类号： H03M13/39 , H04L1/00
CPC分类号： H04L1/006 , H03M13/09 , H03M13/2975 , H03M13/39 , H03M13/41 , H04L1/0051 , H04L1/0054 , H04L1/0065 , H04L1/0072 , H04L1/1812
摘要： The error detection method includes decoding a portion of each control channel that is simultaneously received by a user equipment (UE) in a wireless communication system. The UE is provided with techniques to determine if one or more of the control channels were successfully received during the decoding step. If more than one control channel was successfully received, the method selects only one of the successfully received control channels based on calculated path metric differences (PMD) that serve as a "tie-breaking" mechanism to select the correct control channel for a particular UE.
摘要翻译：错误检测方法包括在无线通信系统中解码由用户设备（UE）同时接收的每个控制信道的一部分。向UE提供确定在解码步骤期间是否成功接收到一个或多个控制信道的技术。如果成功接收到多于一个的控制信道，则该方法基于作为“断开”机制的计算路径度量差（PMD）仅选择成功接收的控制信道中的一个，以选择用于特定UE的正确控制信道。

94. 发明授权

EP1217776B1 Apparatus and method for stopping iterative decoding in CDMA mobile communication system 有权
标题翻译：装置和方法用于在CDMA移动通信系统停止迭代解码
公开(公告)号：EP1217776B1
公开(公告)日：2004-12-01
申请号：EP01130922.6
申请日：2001-12-27
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： Yu, Nam-Yul , Kim, Min.Goo , Choi, Soon-Jae , Kim, Beong-jo , Lee, Young-Hwan
IPC分类号： H04L1/00 , H03M13/29
CPC分类号： H04L1/0051 , H03M13/2975
摘要： Disclosed is an apparatus for stopping iterative decoding in a turbo decoder performing iterative decoding on a received frame comprised of information bits and then outputting the iteratively decoded results. A turbo decoder sequentially outputs absolute LLR (Log Likelihood Ratio) values associated with the respective information bits of the received frame by the iterative decoding, and stops the iterative decoding in response to a stop command for the iterative decoding. A minimum LLR detector selects a minimum value M(i) among the sequentially output absolute LLR values. A controller issues a command to stop the iterative decoding, if the minimum value M(i) is larger than a first threshold determined based on a minimum value Fmin among absolute LLR values output through previous iterative decoding.

95. 发明公开

EP1447936A1 Data communication unit and method thereof for iterative decoding 无效
标题翻译： Datenübertragungseinheitund entsprechendes Verfahrenfüriterative Dekodierung
公开(公告)号：EP1447936A1
公开(公告)日：2004-08-18
申请号：EP03290328.8
申请日：2003-02-11
申请人： Motorola Inc.
发明人： Vivier, Guillaume , Sesia, Stefania , Caire, Giuseppe
IPC分类号： H04L1/18 , H04L1/00 , H03M13/00
CPC分类号： H04L1/1812 , H03M13/00 , H04L1/0051 , H04L1/08 , H04L1/1628 , H04L1/1829
摘要： A method (400) for receiving one or more data blocks in a data communication system comprises the step of receiving one or more data blocks at a receiving communication unit. The method further comprises the steps of determining (410) a-priori whether an iterative decoding operation of the one or more received data blocks is likely to converge; and requesting (420), by said receiving unit in response to determining that an iterative decoding operation is unlikely to converge, a re-transmission of said one or more data blocks. A communication unit and a communication system are also provided.
In this manner, the method prevents a receiver from performing wasteful (in a processing power and/or time sense) iterative decoding operations. Moreover, the overall delay in the receiver is also improved.
摘要翻译：一种用于在数据通信系统中接收一个或多个数据块的方法（400）包括在接收通信单元处接收一个或多个数据块的步骤。该方法还包括以下步骤：先确定（410）一个或多个接收的数据块的迭代解码操作是否可能收敛; 以及响应于确定迭代解码操作不可能收敛而由所述接收单元请求（420）重新发送所述一个或多个数据块。还提供通信单元和通信系统。以这种方式，该方法防止接收机执行浪费（处理能力和/或时间感觉）迭代解码操作。此外，接收机的整体延迟也得到改善。

96. 发明公开

EP1402649A1 ITERATION METHOD FOR OBTAINING A FINAL QUALITY-IMPROVED RECEPTION SIGNAL 有权
标题翻译：为实现最终接收信号质量更高的迭代技术
公开(公告)号：EP1402649A1
公开(公告)日：2004-03-31
申请号：EP01950101.4
申请日：2001-07-04
申请人： TELEFONAKTIEBOLAGET LM ERICSSON
发明人： BOLT, Jaap , BOERRIGTER, Mark
IPC分类号： H03M13/29 , H04L1/00
CPC分类号： H04L1/0051 , H03M13/2975
摘要： The invention is related to a method and an apparatus for processing of a reception signal in a communication system to obtain a final quality-improved reception signal of a quality which exceeds a predetermined minimum quality, wherein the processing of the reception signal comprises iterative processing steps each of which improve the quality of the reception signal, wherein after each subsequent processing step a processed signal is obtained, characterised in that, the method further comprises at least one monitoring step in which the quality of the processed signal as obtained after a processing step is monitored, wherein after each monitoring step the iterative processing is continued if the monitored quality does not exceed the predetermined minimum quality and wherein the iterative processing is stopped if the monitored quality does not exceeds the predetermined minimum quality so that the processed signal forms the final quality-improved reception signal.

97. 发明公开

EP1355430A1 Error detection methods in wireless communication systems 有权
标题翻译：在无线通信系统中错误检测方法
公开(公告)号：EP1355430A1
公开(公告)日：2003-10-22
申请号：EP03251714.6
申请日：2003-03-19
申请人： LUCENT TECHNOLOGIES INC.
发明人： Das, Arnab , Khan, Farooq Ullah , Sampath, Ashwin , Su, Hsuan-Jung
IPC分类号： H03M13/39 , H04L1/00
CPC分类号： H04L1/006 , H03M13/09 , H03M13/2975 , H03M13/39 , H03M13/41 , H04L1/0051 , H04L1/0054 , H04L1/0065 , H04L1/0072 , H04L1/1812
摘要： The error detection method includes decoding a portion of each control channel that is simultaneously received by a user equipment (UE) in a wireless communication system. The UE is provided with techniques to determine if one or more of the control channels were successfully received during the decoding step. If more than one control channel was successfully received, the method selects only one of the successfully received control channels based on calculated path metric differences (PMD) that serve as a "tie-breaking" mechanism to select the correct control channel for a particular UE.

98. 发明公开

EP1193881A3 Automatic retransmission ARQ for turbo-coded data 有权
标题翻译： ARQ自动重发的turbo编码数据
公开(公告)号：EP1193881A3
公开(公告)日：2003-09-17
申请号：EP01308249.0
申请日：2001-09-27
申请人： Sony Corporation
发明人： Nagase, Taku, c/o Intellectual Property Department , Natori, Makoto, c/o Intellectual Property Dept.
IPC分类号： H03M13/29 , H04L1/18
CPC分类号： H04L1/1835 , H03M13/2957 , H03M13/2975 , H04L1/0051 , H04L1/0066 , H04L1/0068
摘要： In order to remove adverse effects in case error detection using error detection codes cannot be performed correctly, and to improve the data transmission efficiency, a turbo decoder (6) compares data which is decoded this time with data which was decoded at a previous time, both of which are decoded in repetitive decoding processing, to obtain discord number information indicative of the number of discordant sign bits, and sends the information to a terminal I/F unit (7) and a packet flow retransmission controlling unit (10). Even though it is determined that error detection result from a CRC recalculating unit (9) shows that no bit error exists, in case the number of discordant sign bits is larger than a predetermined threshold value, it is determined that there is generated error. A packet flow retransmission controlling unit (10) sends a signal requesting retransmission of data. Furthermore, the data amount to be retransmitted is varied in accordance with the number of discordant sign bits to improve the data transmission efficiency.

99. 发明授权

EP1004182B1 COMMUNICATIONS SYSTEMS AND METHODS EMPLOYING PARALLEL CODING WITHOUT INTERLEAVING 有权
标题翻译：通信系统和带有并行VERSCHACHTELUNGSLOSER编码方法
公开(公告)号：EP1004182B1
公开(公告)日：2003-01-02
申请号：EP98940890.1
申请日：1998-08-13
申请人： ERICSSON INC.
发明人： KHAYRALLAH, Ali, S. , HASSAN, Amer, A.
IPC分类号： H04L1/00 , H03M13/00
CPC分类号： H04L1/0059 , H03M13/2903 , H03M13/2939 , H03M13/2948 , H03M13/3983 , H03M13/6561 , H04L1/0051 , H04L1/0054 , H04L1/0066 , H04L1/0071

100. 发明公开

EP0973292A3 Statistically multiplexed turbo code decoder 有权
标题翻译：统计复用解码器，用于turbo编码
公开(公告)号：EP0973292A3
公开(公告)日：2002-10-09
申请号：EP99202201.2
申请日：1999-07-06
申请人： Nortel Networks Limited
发明人： Freeman, Benedict Russell
IPC分类号： H04L1/00
CPC分类号： H04L1/0051 , H03M13/2975 , H03M13/6561 , H04B7/1858 , H04L1/0036 , H04L1/0066 , H04L1/20
摘要： A decode apparatus for decoding a plurality of encoded messages received over a noisy transmission link, eg., a satellite link or a radio telecoms link comprises a demodulator for demodulating analogue signals to produce a digitized bit stream; an analyzer comprising a received signal strength indicator; a carrier to noise ratio measurement means; a look up table for reading data describing an optimized number of decode iterations; an array of turbo code decoders, each having an associated local storage buffer; and a scheduler means for scheduling demodulated message packets to each of the plurality of decoder processors, depending upon an estimated optimum number of decode operations required for each message packet. Allocation of the message packets to the plurality of decode processors is made such as to optimize overall utilization of the decode processors. The number of decode processors required for a system is estimated from a statistical analysis of the noise and optimum number of decode iterations required to decode an incoming time division multiplex bit stream having time division messages which differ in noise ratio, and hence require different processing powers for decoding, between successive time division multiplex messages.

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