公开(公告)号：US20040210812A1

公开(公告)日：2004-10-21

申请号：US10843655

申请日：2004-05-11

Applicant: BROADCOM CORPORATION

Inventor： Kelly B. Cameron ,  Ba-Zhong Shen ,  Hau Thien Tran ,  Christopher R. Jones ,  Thomas Ashford Hughes JR.

IPC: G06F011/00 ,  H04L001/00 ,  G06F011/30 ,  H03M013/00 ,  G08C025/00

CPC classification number: H03M13/3972 ,  H03M13/151 ,  H03M13/1515 ,  H03M13/25 ,  H03M13/258 ,  H03M13/27 ,  H03M13/2757 ,  H03M13/29 ,  H03M13/2966 ,  H03M13/2978 ,  H03M13/3905 ,  H03M13/3922 ,  H03M13/3927 ,  H03M13/3988 ,  H03M13/4107 ,  H03M13/6505 ,  H03M13/6561 ,  H04L1/0041 ,  H04L1/005 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/0066 ,  H04L1/0068 ,  H04L1/0071

Abstract: A method for parallel concatenated (Turbo) encoding and decoding. Turbo encoders receive a sequence of input data tuples and encode them. The input sequence may correspond to a sequence of an original data source, or to an already coded data sequence such as provided by a Reed-Soloman encoder. A turbo encoder generally comprises two or more encoders separated by one or more interleavers. The input data tuples may be interleaved using a modulo scheme in which the interleaving is according to some method (such as block or random interleaving) with the added stipulation that the input tuples may be interleaved only to interleaved positions having the same modulo-N (where N is an integer) as they have in the input data sequence. If all the input tuples are encoded by all encoders then output tuples can be chosen sequentially from the encoders and no tuples will be missed. If the input tuples comprise multiple bits, the bits may be interleaved independently to interleaved positions having the same modulo-N and the same bit position. This may improve the robustness of the code. A first encoder may have no interleaver or all encoders may have interleavers, whether the input tuple bits are interleaved independently or not. Modulo type interleaving also allows decoding in parallel.

Abstract translation: 一种并行级联（Turbo）编码和解码的方法。 Turbo编码器接收一系列输入数据元组并进行编码。 输入序列可以对应于原始数据源的序列，或者对应于已经编码的数据序列，例如由Reed-Soloman编码器提供的。 turbo编码器通常包括由一个或多个交织器分离的两个或更多个编码器。 输入数据元组可以使用其中交织根据某些方法（例如块或随机交织）的加法规则进行交织，其中输入元组可以只交织到具有相同模N的交织位置 其中N是整数），因为它们在输入数据序列中具有。 如果所有的输入元组都是由所有的编码器编码的，那么输出元组可以从编码器顺序选择，也不会丢失元组。 如果输入元组包含多个比特，那么这些比特可以与具有相同模N和相同比特位置的交织位置独立交织。 这可以提高代码的鲁棒性。 第一编码器可以不具有交织器，或者所有编码器可以具有交织器，无论输入元组位是否独立交错。 模式类型交织也允许并行解码。

公开(公告)号：US20040140915A1

公开(公告)日：2004-07-22

申请号：US10751148

申请日：2004-01-02

Applicant: Broadcom Corporation

Inventor： Ba-Zhong Shen ,  Kelly B. Cameron ,  Steven T. Jaffe

IPC: H03M013/00

CPC classification number: H03M13/2906 ,  H03M13/1105 ,  H03M13/1111 ,  H03M13/1128 ,  H03M13/2975 ,  H03M13/3753

Abstract: Method and apparatus for determining the stopping point of an iterative decoding process. In one embodiment the estimated values of an iteration of an iterative decoder are provided to a signature circuit. If the signature does not differ from the previous signature developed from a prior iteration, or the signature developed from an iteration prior to the previous iteration, the decoding stops. The variance may also be tested and compared to a threshold as a criteria to stop the iterative decoding.

公开(公告)号：US20040090352A1

公开(公告)日：2004-05-13

申请号：US10703286

申请日：2003-11-07

Applicant: BROADCOM CORPORATION

Inventor： Steven T. Jaffe ,  Kelly B. Cameron

IPC: H03M007/00

CPC classification number: H04L1/0057 ,  H03M13/1515 ,  H03M13/2966 ,  H04B7/18589 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0052 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/0066 ,  H04L1/0071 ,  H04L1/0083 ,  H04L25/0226 ,  H04L27/0014 ,  H04L2027/0028 ,  H04L2027/0034 ,  H04L2027/0036

Abstract: A communications system, having a combination Reed-Solomon encoder and a Turbo-Code encoder Data frame configuration which may be changed to accommodate embedded submarkers of known value are embedded in with the data order to aid synchronization in the receiver system, by providing strings of known symbols. The string of known symbols may be the same as the symbols within a training header that appears at the beginning of a data frame. Frame parameters may be tailored to individual users and may be controlled by information pertaining to receivers, such as bit error rate, of the receiver. Additional headers may be interspersed within the data in order to assist in receiver synchronization. Frames of data may be acquired quickly by a receiver by having a string of symbols representing the phase offset between successive header symbols in the header training sequence in order to determine the carrier offset. Phase lock to a signal may achieved after determining carrier offset in receivers by con-elating successive symbols in successive headers. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

Abstract translation: 具有组合Reed-Solomon编码器和Turbo-Code编码器数据帧配置的通信系统可以被改变以适应已知值的嵌入式子标记，以数据顺序嵌入以辅助接收机系统中的同步，通过提供串 已知符号。 已知符号串可以与出现在数据帧开始处的训练头中的符号相同。 帧参数可以针对个体用户定制，并且可以由与接收机有关的信息（例如接收机的比特错误率）来控制。 额外的头可以散布在数据内，以帮助接收机同步。 为了确定载波偏移，可以由接收机通过在标题训练序列中的连续首标符号之间具有表示相位偏移的符号串来快速获取数据帧。 在确定接收机中的载波偏移之后，可以通过连续的连续标头中的连续符号来实现对信号的相位锁定。 要强调的是，该摘要被提供以符合要求抽象的规则，这将允许搜索者或其他读者快速确定技术公开内容的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。

公开(公告)号：US20040193996A1

公开(公告)日：2004-09-30

申请号：US10822403

申请日：2004-04-12

Applicant: BROADCOM CORPORATION

Inventor： Steven T. Jaffe ,  Kelly B. Cameron

IPC: H03M007/00 ,  H04B001/66 ,  H04N007/12 ,  H04N011/02 ,  H04N011/04 ,  H03M013/00

CPC classification number: H04L1/0057 ,  H03M13/1515 ,  H03M13/2966 ,  H04B7/18589 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0052 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/0066 ,  H04L1/0071 ,  H04L1/0083 ,  H04L25/0226 ,  H04L27/0014 ,  H04L2027/0028 ,  H04L2027/0034 ,  H04L2027/0036

Abstract: A communications system, having a combination Reed-Solomon encoder and a Turbo-Code encoder Data frame configuration which may be changed to accommodate embedded submarkers of known value are embedded in with the data order to aid synchronization in the receiver system, by providing strings of known symbols. The string of known symbols may be the same as the symbols within a training header that appears at the beginning of a data frame. Frame parameters may be tailored to individual users and may be controlled by information pertaining to receivers, such as bit error rate, of the receiver. Additional headers may be interspersed within the data in order to assist in receiver synchronization. Frames of data may be acquired quickly by a receiver by having a string of symbols representing the phase offset between successive header symbols in the header training sequence in order to determine the carrier offset. Phase lock to a signal may achieved after determining carrier offset in receivers by correlating successive symbols in successive headers. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

Abstract translation: 具有组合Reed-Solomon编码器和Turbo-Code编码器数据帧配置的通信系统可以被改变以适应已知值的嵌入式子标记，以数据顺序嵌入以辅助接收机系统中的同步，通过提供串 已知符号。 已知符号串可以与出现在数据帧开始处的训练头中的符号相同。 帧参数可以针对个体用户定制，并且可以由与接收机有关的信息（例如接收机的比特错误率）来控制。 额外的头可以散布在数据内，以帮助接收机同步。 为了确定载波偏移，可以由接收机通过在标题训练序列中的连续首标符号之间具有表示相位偏移的符号串来快速获取数据帧。 在确定接收机中的载波偏移之后可以通过将连续的标题中的连续符号相关来来实现对信号的相位锁定。 要强调的是，该摘要被提供以符合要求摘要的规则，这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。

公开(公告)号：US20020196165A1

公开(公告)日：2002-12-26

申请号：US10219858

申请日：2002-08-15

Applicant: Broadcom Corporation

Inventor： Ba-Zhong Shen ,  Kelly B. Cameron ,  Steven T. Jaffe

IPC: H03M007/00

CPC classification number: H03M13/2906 ,  H03M13/1105 ,  H03M13/1111 ,  H03M13/1128 ,  H03M13/2975 ,  H03M13/3753

Abstract: Method and apparatus for determining the stopping point of an iterative decoding process. In one embodiment the estimated values of an iteration of an iterative decoder are provided to a signature circuit. If the signature does not differ from the previous signature developed from a prior iteration, or the signature developed from an iteration prior to the previous iteration, the decoding stops. The variance may also be tested and compared to a threshold as a criteria to stop the iterative decoding.

Abstract translation: 用于确定迭代解码过程的停止点的方法和装置。 在一个实施例中，将迭代解码器的迭代的估计值提供给签名电路。 如果签名与从先前迭代开始的先前签名或从前一次迭代之前的迭代开发的签名没有不同，则解码停止。 也可以测量方差并将其与阈值进行比较，作为停止迭代解码的标准。

公开(公告)号：US20020038458A1

公开(公告)日：2002-03-28

申请号：US09808373

申请日：2001-03-13

Applicant: Broadcom Corporation

Inventor： Frederik Nanoo Staal ,  Robert Allen Hawley ,  Kelly B. Cameron

IPC: H04N007/20 ,  H04N007/18

CPC classification number: H04N21/23608 ,  H04L1/0045 ,  H04L1/0082 ,  H04L27/34 ,  H04L2001/0097 ,  H04N7/106 ,  H04N7/20 ,  H04N21/238 ,  H04N21/2383 ,  H04N21/4305 ,  H04N21/4382 ,  H04N21/6143

Abstract: Digital packets, defined by a sync byte and then 130 MPEG2 compressed QPSK signal bytes, from a satellite transponder are reformatted prior to transmission to television receivers in apartments in a building wired to distribute video signals. A side byte between such sync and signal bytes in each packet indicates (a) any QPSK packet uncorrectable error and (b) processing information which allows automatic reconfiguration at the settop box. Additional FEC bytes correct to 8 errors within a MPEG2QPSK packet. The system removes the FEC bytes and reframes the MPEG2QPSK packets into a superpacket by converting a first number of the MPEG2QPSK packets to a second number of MPEG2QAM packets. An added sync byte indicates the beginning of each such MPEG2QAM packet. The system adds side data bytes including any uncorrectable errors in each MPEG2QPSK packet and adds a new, less complicated FEC to each MPEG2QAM packet. The system modulates and upconverts the bytes in each MPEG2QAM packet and passes them through a cable plant constructed to receive modulated QAM bytes (or NTSC signals) which are demodulated at the settop box. The additional FEC bytes correct to 8 errors within a MPEG2QAM packet and are then removed. The superpacket is deframed to obtain the MPEG2QPSK packets. After finding a television channel, the side bytes are processed to determine the frequency location of the other channels in the apartment receivers and the existence of uncorrectable errors. The MPEG2QAM bytes are decompressed and encoded to reproduce the television images in the apartment receivers.

Abstract translation: 来自卫星转发器的同步字节和130个MPEG2压缩的QPSK信号字节定义的数字分组在传输到有线分配视频信号的建筑物的公寓中的电视接收机之前被重新格式化。 每个分组中的同步信号字节之间的边字节表示（a）任何QPSK分组不可校正错误和（b）允许在机顶盒自动重新配置的处理信息。 额外的FEC字节校正到MPEG2QPSK分组内的8个错误​​。 该系统通过将第一数量的MPEG2QPSK分组转换为第二数量的MPEG2QAM分组来去除FEC字节并将MPEG2QPSK分组重构成超分组。 添加的同步字节表示每个这样的MPEG2QAM分组的开始。 该系统在每个MPEG2QPSK分组中添加包括任何不可校正错误的边数据字节，并向每个MPEG2QAM分组添加新的较不复杂的FEC。 系统对每个MPEG2QAM数据包中的字节进行调制和上变频，并将其通过构造成接收在机顶盒解调的调制QAM字节（或NTSC信号）的电缆设备。 附加FEC字节校正为MPEG2QAM数据包内的8个错误​​，然后被删除。 超级分组被去帧以获得MPEG2QPSK分组。 找到电视频道后，处理边字节以确定公寓接收机中其他频道的频率位置以及不可校正错误的存在。 对MPEG2QAM字节进行解压缩和编码以再现公寓接收机中的电视图像。