公开(公告)号：US20070298789A1

公开(公告)日：2007-12-27

申请号：US11752291

申请日：2007-05-22

申请人： Ramaswamy Murali ,  Gordon Walker ,  Rajiv Vijayan

发明人： Ramaswamy Murali ,  Gordon Walker ,  Rajiv Vijayan

IPC分类号： H04B7/00

CPC分类号： H04N5/4401 ,  H04N5/50 ,  H04N21/41407 ,  H04N21/4345 ,  H04N21/4384 ,  H04N21/44222

摘要： Techniques to seamlessly switch reception between multimedia programs are described. For “continued decoding”, a wireless device continues to receive, decode, decompress, and (optionally) display a current program, even after a new program has been selected, until overhead information needed to decode the new program is received. After receiving the overhead information, the wireless device decodes the new program but continues to decompress the current program. The wireless device decompresses the new program after decoding this program. For “early decoding”, the wireless device receives a user input and identifies a program with potential for user selection. The identified program may be the one highlighted by the user input or a program anticipated to be selected based on the user input. The wireless device initiates decoding of the identified program, prior to its selection, so that the program can be decompressed and displayed earlier if it is subsequently selected.

摘要翻译： 描述了在多媒体节目之间无缝切换接收的技术。 对于“继续解码”，即使在选择了新的程序之后，无线设备继续接收，解码，解压缩和（可选地）显示当前程序，直到接收到解码新程序所需的开销信息。 在接收到开销信息之后，无线设备解码新程序，但是继续解压缩当前程序。 解码该程序后，无线设备解压缩新程序。 对于“早期解码”，无线设备接收用户输入并识别具有用户选择潜力的节目。 识别的程序可以是由用户输入或预期将基于用户输入选择的程序突出显示的程序。 无线设备在其选择之前启动所识别的节目的解码，使得如果随后选择该节目，则可以更早地解压缩并显示节目。

公开(公告)号：US07310768B2

公开(公告)日：2007-12-18

申请号：US10892738

申请日：2004-07-16

申请人： Donald Brian Eidson ,  Abraham Krieger ,  Ramaswamy Murali

发明人： Donald Brian Eidson ,  Abraham Krieger ,  Ramaswamy Murali

IPC分类号： H03M13/03

CPC分类号： H04L1/005 ,  H03M13/09 ,  H03M13/15 ,  H03M13/2936 ,  H03M13/2948 ,  H03M13/2972 ,  H03M13/3776 ,  H03M13/3994 ,  H04L1/0054 ,  H04L1/0061 ,  H04L1/0065 ,  H04L1/0066

摘要： Iterative decoder employing multiple external code error checks to lower the error floor and/or improve decoding performance. Data block redundancy, sometimes via a cyclic redundancy check (CRC) or Reed Solomon (RS) code, enables enhanced iterative decoding performance. Improved decoding performance is achieved during interim iterations before the final iteration. A correctly decoded CRC block, indicating a decoded segment is correct with a high degree of certainty, assigns a very high confidence level to the bits in this segment and is fed back to inner and/or outer decoders (with interleaving, when appropriate) for improved iterative decoding. High confidence bits may be scattered throughout inner decoded frames to influence other bit decisions in subsequent iterations. Turbo decoders typically operate relatively well at regions where the BER is high; the invention improves iterative decoder operation at lower BERs, lowering the ‘BER floor’ that is sometimes problematic with conventional turbo decoders.

摘要翻译： 迭代解码器采用多个外部码错误检查来降低错误帧和/或提高解码性能。 有时通过循环冗余校验（CRC）或Reed Solomon（RS）代码进行数据块冗余，可实现增强的迭代解码性能。 在最终迭代之前的中间迭代期间，可以实现改进的解码性能。 一个正确解码的CRC块，指示解码的段是高度确定的正确的，为该段中的位分配非常高的置信度水平，并将其反馈给内部和/或外部解码器（适当时进行交织），以便 改进的迭代解码。 高置信位可能散布在整个内部解码帧中，以影响后续迭代中的其他位决策。 Turbo解码器通常在BER高的区域相对较好地工作; 本发明改进了在较低BER下的迭代解码器操作，降低了常规turbo解码器有时成问题的“BER地面”。

公开(公告)号：US20050141475A1

公开(公告)日：2005-06-30

申请号：US10968702

申请日：2004-10-18

申请人： Rajiv Vijayan ,  Gordon Walker ,  Bruce Collins ,  Dhinakar Radhakrishnan ,  Ramaswamy Murali

发明人： Rajiv Vijayan ,  Gordon Walker ,  Bruce Collins ,  Dhinakar Radhakrishnan ,  Ramaswamy Murali

IPC分类号： H04W4/06 ,  H04W52/02 ,  H04Q7/20

CPC分类号： H04W4/06 ,  H04W52/0216 ,  H04W72/005 ,  Y02D70/10

摘要： Techniques for transmitting overhead information to facilitate efficient reception of individual data streams are described. A base station may transmit multiple data streams on multiple data channels (or MLCs). The MLCs may be transmitted at different times and on different frequency subbands. The time-frequency location of each MLC may change over time. The overhead information indicates the time-frequency location of each MLC and may be sent as “composite” and “embedded” overhead information. The composite overhead information indicates the time-frequency locations of all MLCs and is sent periodically in each super-frame. A wireless device receives the composite overhead information, determines the time-frequency location of each MLC of interest, and receives each MLC at the indicated time-frequency location. The embedded overhead information for each MLC indicates the time-frequency location of that MLC in the next super-frame and is transmitted along with the payload of the MLC in the current super-frame.

摘要翻译： 描述了用于发送开销信息以促进单个数据流的有效接收的技术。 基站可以在多个数据信道（或MLC）上发送多个数据流。 MLC可以在不同的时间和在不同的频率子带上传输。 每个MLC的时间 - 频率位置可能随时间而变化。 开销信息指示每个MLC的时间 - 频率位置，并且可以作为“复合”和“嵌入”开销信息发送。 复合开销信息表示所有MLC的时间 - 频率位置，并且在每个超帧中周期性地发送。 无线设备接收复合开销信息，确定感兴趣的每个MLC的时间 - 频率位置，并且在指定的时间 - 频率位置接收每个MLC。 每个MLC的嵌入式开销信息指示该MLC在下一个超帧中的时间 - 频率位置，并与当前超帧中的MLC的有效载荷一起发送。

公开(公告)号：US08005420B2

公开(公告)日：2011-08-23

申请号：US11752291

申请日：2007-05-22

申请人： Ramaswamy Murali ,  Gordon Kent Walker ,  Rajiv Vijayan

发明人： Ramaswamy Murali ,  Gordon Kent Walker ,  Rajiv Vijayan

IPC分类号： H04H40/00

CPC分类号： H04N5/4401 ,  H04N5/50 ,  H04N21/41407 ,  H04N21/4345 ,  H04N21/4384 ,  H04N21/44222

摘要： Techniques to seamlessly switch reception between multimedia programs are described. For “continued decoding”, a wireless device continues to receive, decode, decompress, and (optionally) display a current program, even after a new program has been selected, until overhead information needed to decode the new program is received. After receiving the overhead information, the wireless device decodes the new program but continues to decompress the current program. The wireless device decompresses the new program after decoding this program. For “early decoding”, the wireless device receives a user input and identifies a program with potential for user selection. The identified program may be the one highlighted by the user input or a program anticipated to be selected based on the user input. The wireless device initiates decoding of the identified program, prior to its selection, so that the program can be decompressed and displayed earlier if it is subsequently selected.

摘要翻译： 描述了在多媒体节目之间无缝切换接收的技术。 对于“继续解码”，即使在选择了新的程序之后，无线设备继续接收，解码，解压缩和（可选地）显示当前程序，直到接收到解码新程序所需的开销信息。 在接收到开销信息之后，无线设备解码新程序，但是继续解压缩当前程序。 解码该程序后，无线设备解压缩新程序。 对于“早期解码”，无线设备接收用户输入并识别具有用户选择潜力的节目。 识别的程序可以是由用户输入或预期将基于用户输入选择的程序突出显示的程序。 无线设备在其选择之前启动所识别的节目的解码，使得如果随后选择该节目，则可以更早地解压缩并显示节目。

公开(公告)号：US20100265865A9

公开(公告)日：2010-10-21

申请号：US11751631

申请日：2007-05-21

申请人： Rajiv Vijayan ,  Aamod Khandekar ,  Fuyun Ling ,  Gordon Kent Walker ,  Ramaswamy Murali

发明人： Rajiv Vijayan ,  Aamod Khandekar ,  Fuyun Ling ,  Gordon Kent Walker ,  Ramaswamy Murali

IPC分类号： H04J3/24

CPC分类号： H04W52/0209 ,  H04B7/12 ,  H04L1/0057 ,  H04L1/0065 ,  H04L1/0071 ,  H04L1/0083 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/06 ,  H04L25/0224 ,  H04L27/2602 ,  H04N21/2383 ,  H04N21/4382 ,  H04N21/6112 ,  H04W4/06 ,  H04W28/06 ,  H04W72/04 ,  Y02D70/166 ,  Y02D70/168 ,  Y02D70/442

摘要： Techniques for multiplexing and transmitting multiple data streams are described. Transmission of the multiple data streams occurs in “super-frames”. Each super-frame has a predetermined time duration and is further divided into multiple (e.g., four) frames. Each data block for each data stream is outer encoded to generate a corresponding code block. Each code block is partitioned into multiple subblocks, and each data packet in each code block is inner encoded and modulated to generate modulation symbols for the packet. The multiple subblocks for each code block are transmitted in the multiple frames of the same super-frame, one subblock per frame. Each data stream is allocated a number of transmission units in each super-frame and is assigned specific transmission units to achieve efficient packing. A wireless device can select and receive individual data streams.

摘要翻译： 描述用于复用和传输多个数据流的技术。 多个数据流的传输发生在“超帧”中。 每个超帧具有预定的持续时间并进一步分为多个（例如，四个）帧。 每个数据流的每个数据块被外部编码以生成相应的代码块。 每个码块被划分成多个子块，并且每个码块中的每个数据分组被内部编码和调制以产生分组的调制符号。 每个码块的多个子块在相同超帧的多个帧中传送，每帧一个子块。 每个数据流在每个超帧中被分配多个传输单元，并被分配特定的传输单元以实现有效的打包。 无线设备可以选择和接收各个数据流。

公开(公告)号：US07310369B1

公开(公告)日：2007-12-18

申请号：US09870926

申请日：2001-05-30

申请人： Abraham Krieger ,  Ramaswamy Murali ,  Donald Brian Eidson ,  Sachar Kons

发明人： Abraham Krieger ,  Ramaswamy Murali ,  Donald Brian Eidson ,  Sachar Kons

IPC分类号： H03D3/18 ,  H03D3/24

CPC分类号： H04L1/20 ,  H04B17/26 ,  H04B17/336 ,  H04L1/0054 ,  H04L1/0055

摘要： A method for estimating an SNR-related parameter, such as ES/N0, from one or more symbols. The number of symbols within a predetermined number of symbols that fall within one or more collection areas is counted. The count is then associated with a value of the SNR-related parameter. This association may be performed through one or more lookup tables. In one application, a scaling factor is derived from the count. The scaling factor may be used to scale symbols before they are quantized and inputted into a trellis decoder such as a log-MAP decoder.

摘要翻译： 一种用于从一个或多个符号估计SNR相关参数的方法，例如E / S / N 0 0。 计数落入一个或多个收集区域内的预定数量的符号内的符号数。 然后计数与SNR相关参数的值相关联。 该关联可以通过一个或多个查找表来执行。 在一个应用中，从计数导出缩放因子。 比例因子可以在量化之前对符号进行缩放并输入到诸如log-MAP解码器的网格解码器中。

公开(公告)号：US20050101319A1

公开(公告)日：2005-05-12

申请号：US10968613

申请日：2004-10-18

申请人： Ramaswamy Murali ,  Gordon Walker ,  Rajiv Vijayan

发明人： Ramaswamy Murali ,  Gordon Walker ,  Rajiv Vijayan

IPC分类号： H04H20/71 ,  G06F20060101 ,  G06Q50/30 ,  H04B7/00 ,  H04N7/08

CPC分类号： H04N5/4401 ,  H04N5/50 ,  H04N21/41407 ,  H04N21/4345 ,  H04N21/4384 ,  H04N21/44222

摘要： Techniques to seamlessly switch reception between multimedia programs are described. For “continued decoding”, a wireless device continues to receive, decode, decompress, and (optionally) display a current program, even after a new program has been selected, until overhead information needed to decode the new program is received. After receiving the overhead information, the wireless device decodes the new program but continues to decompress the current program. The wireless device decompresses the new program after decoding this program. For “early decoding”, the wireless device receives a user input and identifies a program with potential for user selection. The identified program may be the one highlighted by the user input or a program anticipated to be selected based on the user input. The wireless device initiates decoding of the identified program, prior to its selection, so that the program can be decompressed and displayed earlier if it is subsequently selected.

摘要翻译： 描述了在多媒体节目之间无缝切换接收的技术。 对于“继续解码”，即使在选择了新的程序之后，无线设备继续接收，解码，解压缩和（可选地）显示当前程序，直到接收到解码新程序所需的开销信息。 在接收到开销信息之后，无线设备解码新程序，但是继续解压缩当前程序。 解码该程序后，无线设备解压缩新程序。 对于“早期解码”，无线设备接收用户输入并识别具有用户选择潜力的节目。 识别的程序可以是由用户输入或预期将基于用户输入选择的程序突出显示的程序。 无线设备在其选择之前启动所识别的节目的解码，使得如果随后选择该节目，则可以更早地解压缩并显示节目。

公开(公告)号：US08599764B2

公开(公告)日：2013-12-03

申请号：US10968702

申请日：2004-10-18

申请人： Rajiv Vijayan ,  Kent Gordon Walker ,  Richard Doil Lane ,  Dhinakar Radhakrishnan ,  Ramaswamy Murali

发明人： Rajiv Vijayan ,  Kent Gordon Walker ,  Richard Doil Lane ,  Dhinakar Radhakrishnan ,  Ramaswamy Murali

IPC分类号： H04W4/00

CPC分类号： H04W4/06 ,  H04W52/0216 ,  H04W72/005 ,  Y02D70/10

摘要： Techniques for transmitting overhead information to facilitate efficient reception of individual data streams are described. A base station may transmit multiple data streams on multiple data channels (or MLCs). The MLCs may be transmitted at different times and on different frequency subbands. The time-frequency location of each MLC may change over time. The overhead information indicates the time-frequency location of each MLC and may be sent as “composite” and “embedded” overhead information. The composite overhead information indicates the time-frequency locations of all MLCs and is sent periodically in each super-frame. A wireless device receives the composite overhead information, determines the time-frequency location of each MLC of interest, and receives each MLC at the indicated time-frequency location. The embedded overhead information for each MLC indicates the time-frequency location of that MLC in the next super-frame and is transmitted along with the payload of the MLC in the current super-frame.

摘要翻译： 描述了用于发送开销信息以促进单个数据流的有效接收的技术。 基站可以在多个数据信道（或MLC）上发送多个数据流。 MLC可以在不同的时间和在不同的频率子带上传输。 每个MLC的时间 - 频率位置可能随时间而变化。 开销信息指示每个MLC的时间 - 频率位置，并且可以作为“复合”和“嵌入”开销信息发送。 复合开销信息表示所有MLC的时间 - 频率位置，并且在每个超帧中周期性地发送。 无线设备接收复合开销信息，确定感兴趣的每个MLC的时间 - 频率位置，并且在指定的时间 - 频率位置接收每个MLC。 每个MLC的嵌入式开销信息指示该MLC在下一个超帧中的时间 - 频率位置，并与当前超帧中的MLC的有效载荷一起发送。

公开(公告)号：US20130177010A9

公开(公告)日：2013-07-11

申请号：US10968702

申请日：2004-10-18

申请人： Rajiv Vijayan ,  Gordon Kent Walker ,  Bruce Collins ,  Dhinakar Radhakrishnan ,  Ramaswamy Murali

发明人： Rajiv Vijayan ,  Gordon Kent Walker ,  Bruce Collins ,  Dhinakar Radhakrishnan ,  Ramaswamy Murali

IPC分类号： H04W4/06 ,  H04W52/02

CPC分类号： H04W4/06 ,  H04W52/0216 ,  H04W72/005 ,  Y02D70/10

摘要： Techniques for transmitting overhead information to facilitate efficient reception of individual data streams are described. A base station may transmit multiple data streams on multiple data channels (or MLCs). The MLCs may be transmitted at different times and on different frequency subbands. The time-frequency location of each MLC may change over time. The overhead information indicates the time-frequency location of each MLC and may be sent as “composite” and “embedded” overhead information. The composite overhead information indicates the time-frequency locations of all MLCs and is sent periodically in each super-frame. A wireless device receives the composite overhead information, determines the time-frequency location of each MLC of interest, and receives each MLC at the indicated time-frequency location. The embedded overhead information for each MLC indicates the time-frequency location of that MLC in the next super-frame and is transmitted along with the payload of the MLC in the current super-frame.

摘要翻译： 描述了用于发送开销信息以促进单个数据流的有效接收的技术。 基站可以在多个数据信道（或MLC）上发送多个数据流。 MLC可以在不同的时间和在不同的频率子带上传输。 每个MLC的时间 - 频率位置可能随时间而变化。 开销信息指示每个MLC的时间 - 频率位置，并且可以作为“复合”和“嵌入”开销信息发送。 复合开销信息表示所有MLC的时间 - 频率位置，并且在每个超帧中周期性地发送。 无线设备接收复合开销信息，确定感兴趣的每个MLC的时间 - 频率位置，并且在指定的时间 - 频率位置接收每个MLC。 每个MLC的嵌入式开销信息指示该MLC在下一个超帧中的时间 - 频率位置，并与当前超帧中的MLC的有效载荷一起发送。

公开(公告)号：US20080072123A1

公开(公告)日：2008-03-20

申请号：US11944320

申请日：2007-11-21

申请人： Donald Eidson ,  Abraham Krieger ,  Ramaswamy Murali

发明人： Donald Eidson ,  Abraham Krieger ,  Ramaswamy Murali

IPC分类号： H03M13/03 ,  G06F11/00

CPC分类号： H04L1/005 ,  H03M13/09 ,  H03M13/15 ,  H03M13/2936 ,  H03M13/2948 ,  H03M13/2972 ,  H03M13/3776 ,  H03M13/3994 ,  H04L1/0054 ,  H04L1/0061 ,  H04L1/0065 ,  H04L1/0066

摘要： Iterative decoder employing multiple external code error checks to lower the error floor and/or improve decoding performance. Data block redundancy, sometimes via a cyclic redundancy check (CRC) or Reed Solomon (RS) code, enables enhanced iterative decoding performance. Improved decoding performance is achieved during interim iterations before the final iteration. A correctly decoded CRC block, indicating a decoded segment is correct with a high degree of certainty, assigns a very high confidence level to the bits in this segment and is fed back to inner and/or outer decoders (with interleaving, when appropriate) for improved iterative decoding. High confidence bits may be scattered throughout inner decoded frames to influence other bit decisions in subsequent iterations. Turbo decoders typically operate relatively well at regions where the BER is high; the invention improves iterative decoder operation at lower BERs, lowering the ‘BER floor’ that is sometimes problematic with conventional turbo decoders.

摘要翻译： 迭代解码器采用多个外部码错误检查来降低错误帧和/或提高解码性能。 有时通过循环冗余校验（CRC）或Reed Solomon（RS）代码进行数据块冗余，可实现增强的迭代解码性能。 在最终迭代之前的中间迭代期间，可以实现改进的解码性能。 一个正确解码的CRC块，指示解码的段是高度确定的正确的，为该段中的位分配非常高的置信度水平，并将其反馈给内部和/或外部解码器（适当时进行交织），以便 改进的迭代解码。 高置信位可能散布在整个内部解码帧中，以影响后续迭代中的其他位决策。 Turbo解码器通常在BER高的区域相对较好地工作; 本发明改进了在较低BER下的迭代解码器操作，降低了常规turbo解码器有时成问题的“BER地面”。