公开(公告)号：US09021329B2

公开(公告)日：2015-04-28

申请号：US13853486

申请日：2013-03-29

Applicant: Broadcom Corporation

Inventor： Ba-Zhong Shen ,  Avi Kliger ,  Tak K. Lee ,  Anatoloi Shindler

IPC: H03M13/00 ,  H03M13/29 ,  H04L1/00 ,  H04L25/06 ,  H04L27/34

CPC classification number: H04L1/0045 ,  H03M13/1102 ,  H03M13/29 ,  H03M13/45 ,  H04L1/005 ,  H04L1/0065 ,  H04L1/007 ,  H04L1/0071 ,  H04L25/067 ,  H04L27/3416

Abstract: Impulse and/or burst noise signal to noise ratio (SNR) aware concatenated forward error correction (FEC). Adaptive processing is performed on a signal based on one or more effects which may deleteriously modify a signal. For example, based on a modification of a signal to noise ratio (SNR) associated with one or more impulse or burst noise events, which may be estimated, different respective processing may be performed selectively to differently affected bits associated with the signal. For example, two respective SNRs may be employed: a first SNR for one or more first bits, and a second SNR for one or more second bits. For example, as an impulse or burst noise event may affect different respective bits of a codeword differently, and adaptive processing may be made such that different respective bits of the codeword may be handled differently.

公开(公告)号：US09276703B2

公开(公告)日：2016-03-01

申请号：US14695231

申请日：2015-04-24

Applicant: BROADCOM CORPORATION

Inventor： Ba-Zhong Shen ,  Avi Kliger ,  Tak K. Lee ,  Anatoli Shindler

IPC: H03M13/29 ,  H04L1/00 ,  H03M13/11 ,  H03M13/45 ,  H04L25/06 ,  H04L27/34

CPC classification number: H04L1/0045 ,  H03M13/1102 ,  H03M13/29 ,  H03M13/45 ,  H04L1/005 ,  H04L1/0065 ,  H04L1/007 ,  H04L1/0071 ,  H04L25/067 ,  H04L27/3416

Abstract: Impulse and/or burst noise signal to noise ratio (SNR) aware concatenated forward error correction (FEC). Adaptive processing is performed on a signal based on one or more effects which may deleteriously modify a signal. For example, based on a modification of a signal to noise ratio (SNR) associated with one or more impulse or burst noise events, which may be estimated, different respective processing may be performed selectively to differently affected bits associated with the signal. For example, two respective SNRs may be employed: a first SNR for one or more first bits, and a second SNR for one or more second bits. For example, as an impulse or burst noise event may affect different respective bits of a codeword differently, and adaptive processing may be made such that different respective bits of the codeword may be handled differently.

公开(公告)号：US09130811B2

公开(公告)日：2015-09-08

申请号：US14099596

申请日：2013-12-06

Applicant: BROADCOM CORPORATION

Inventor： Thomas J. Kolze ,  Tak K. Lee ,  Ba-Zhong Shen ,  Richard S. Prodan

IPC: H04K1/10 ,  H04L27/26 ,  H04L5/00 ,  H04L1/00

CPC classification number: H04L27/2627 ,  H04L1/00 ,  H04L1/0057 ,  H04L1/0071 ,  H04L5/003 ,  H04L5/0044

Abstract: A communication device is configured to perform interleaving of a modulation symbol sequence to generate an OFDM symbol. Some modulation symbols within the modulation symbol sequence that are separated by an interleaver depth may be transmitted via adjacently located sub-carriers, while other modulation symbols within the modulation sequence that are separated by more than the interleaver depth may also be transmitted via adjacently located sub-carriers. First adjacently located sub-carriers transmit first and second modulation symbols that are separated by the interleaver depth within the modulation sequence while second adjacently located sub-carriers transmit third and fourth modulation symbol that are separated by more than the interleaver depth within the modulation sequence. A communication device may be configured to adapt and switch between different operational parameters used for interleaving and/or deinterleaving at different times based on any desired considerations.

Abstract translation: 通信设备被配置为执行调制符号序列的交织以生成OFDM符号。 通过交织器深度分隔的调制符号序列内的一些调制符号可以经由相邻位置的子载波发送，而在调制序列内被隔离多于交织器深度的其他调制符号也可以经由相邻位置的子 载体。 首先相邻定位的副载波发送在调制序列内由交织器深度分隔开的第一和第二调制符号，而第二相邻位置的副载波传输在调制序列内分离多于交织器深度的第三和第四调制符号。 通信设备可以被配置为基于任何期望的考虑，在不同时间根据用于交织和/或解交织的不同操作参数之间进行调整和切换。

公开(公告)号：US09031143B2

公开(公告)日：2015-05-12

申请号：US14069258

申请日：2013-10-31

Applicant: Broadcom Corporation

Inventor： Ba-Zhong Shen ,  Richard S. Prodan ,  Avi Kliger ,  Leo Montreuil ,  Jonathan S. Min ,  Tak K. Lee ,  Kelly Brian Cameron ,  Hau Thien Tran

IPC: H04L1/00 ,  H04L25/03 ,  H04L25/06 ,  H04L27/26

CPC classification number: H04L1/0054 ,  H04L1/0045 ,  H04L25/03159 ,  H04L25/03318 ,  H04L25/067 ,  H04L27/2649

Abstract: A communication device is configured adaptively to process a receive signal based on noise that may have adversely affected the signal during transition via communication channel. The device may be configured to identify those portions of the signal of the signal that are noise-affected (e.g., noise-affected sub-carriers of an orthogonal frequency division multiplexing (OFDM) signal), or the device may receive information that identifies those portions of the signal that are noise-affected from one or more other devices. The device may be configured to perform the modulation processing of the received signal to generate log-likelihood ratios (LLRs) for use in decoding the signal. Those LLRs associated with noise-affected portions of the signal are handled differently than LLRs associated with portions of the signal that are not noise-affected. The LLRs may be scaled based on signal to noise ratio(s) (SNR(s)) associated with the signal (e.g., based on background noise, burst noise, etc.).

Abstract translation: 通信设备被自适应地配置为基于可能在经由通信信道的转换期间不利地影响信号的噪声来处理接收信号。 该设备可以被配置为识别受到噪声影响的信号的信号的那些部分（例如，正交频分复用（OFDM）信号的噪声影响的子载波），或者设备可以接收标识那些 来自一个或多个其他装置的噪声影响的部分信号。 该设备可以被配置为执行接收信号的调制处理，以产生用于解码信号的对数似然比（LLR）。 与信号的噪声影响部分相关联的那些LLR被处理与不受噪声影响的信号的部分相关联的LLR不同。 可以基于与信号相关联的信噪比（SNR（s））来缩放LLR（例如，基于背景噪声，突发噪声等）。

公开(公告)号：US09203443B2

公开(公告)日：2015-12-01

申请号：US14522257

申请日：2014-10-23

Applicant: BROADCOM CORPORATION

Inventor： Ba-Zhong Shen ,  Tak K. Lee

IPC: H03M13/03 ,  H03M13/00 ,  H03M13/29 ,  H03M13/47 ,  H04L1/00 ,  H03M13/25

CPC classification number: H03M13/6381 ,  H03M13/258 ,  H03M13/2957 ,  H03M13/47 ,  H03M13/635 ,  H04L1/0041 ,  H04L1/0066 ,  H04L1/0068

Abstract: Optimal period rate matching for turbo coding. A means is provided herein by which a nearly optimal (e.g., optimal for one block size and sub-optimal for others) periodic puncturing pattern that depends on a mother code. Any desired rate matching can be achieved using the means and approaches presented herein to ensure an appropriate rate of an encoded block output from a turbo encoder so that the subsequently modulated signal generated there from has the appropriate rate. In addition, some embodiments can also employ shifting for another design level available in accordance with puncturing employed to provide for periodic rate matching. Selectivity can also be employed, such that, a first periodic puncturing pattern can be applied at a first time to ensure a first rate, and a second periodic puncturing pattern can be applied at a second time to ensure a second rate.

Abstract translation: turbo编码的最优周期速率匹配。 本文提供了一种取决于母码的近似最佳（例如，对于一个块大小而优于其他块最优的）周期性穿孔模式。 任何期望的速率匹配可以使用本文提供的装置和方法来实现，以确保来自turbo编码器的编码块输出的适当速率，使得在那里生成的后续调制信号具有适当的速率。 此外，一些实施例还可以采用根据用于提供周期性速率匹配的穿孔的可用的另一设计级别的移位。 还可以采用选择性，使得可以在第一时间施加第一周期性删截图案以确保第一速率，并且可以在第二时间施加第二周期性删截图案以确保第二速率。

公开(公告)号：US09178653B2

公开(公告)日：2015-11-03

申请号：US14068534

申请日：2013-10-31

Applicant: BROADCOM CORPORATION

Inventor： Ba-Zhong Shen ,  Avi Kliger ,  Tak K. Lee

IPC: H03M13/11 ,  H04L1/00 ,  H03M13/00

CPC classification number: H04L1/0041 ,  H03M13/1137 ,  H03M13/116 ,  H03M13/118 ,  H03M13/1185 ,  H03M13/6362 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/0068

Abstract: A communication device is configured to encode and/or decode low density parity check (LDPC) coded signals. Such LDPC coded signals are characterized by LDPC matrices having a particular form. An LDPC matrix may be partitioned into a left hand side matrix and the right hand side matrix. The right hand side matrix can be lower triangular such that all of the sub-matrices therein are all-zero-valued sub-matrices (e.g., all of the elements within an all-zero-valued sub-matrix have the value of “0”) except for those sub-matrices located on a main diagonal of the right hand side matrix and another diagonal that is adjacently located to the left of the main diagonal. A device may be configured to employ different LDPC codes having different LDPC matrices for different LDPC coded signals. The different LDPC matrices may be based generally on a common form (e.g., with a right hand side matrix as described above).

Abstract translation: 通信设备被配置为对低密度奇偶校验（LDPC）编码信号进行编码和/或解码。 这样的LDPC编码信号的特征在于具有特定形式的LDPC矩阵。 LDPC矩阵可以被划分为左手侧矩阵和右手侧矩阵。 右侧的矩阵可以是较低的三角形，使得其中的所有子矩阵都是全零值子矩阵（例如，全零值子矩阵内的所有元素的值为“0” “），除了位于右手侧矩阵的主对角线上的那些子矩阵和相邻地位于主对角线左侧的另一对角线之外。 设备可以被配置为对不同的LDPC编码信号采用具有不同LDPC矩阵的不同LDPC码。 不同的LDPC矩阵通常可以基于普通形式（例如，如上所述使用右手侧矩阵）。

公开(公告)号：US09154261B2

公开(公告)日：2015-10-06

申请号：US14068479

申请日：2013-10-31

Applicant: BROADCOM CORPORATION

Inventor： Ba-Zhong Shen ,  Tak K. Lee ,  Jonathan S. Min ,  Avi Kliger ,  Richard S. Prodan

IPC: H04L1/00 ,  H03M13/11

CPC classification number: H04L1/0041 ,  H03M13/1137 ,  H03M13/116 ,  H03M13/1185 ,  H03M13/1188 ,  H03M13/35 ,  H04L1/0057

Abstract: A communication device is configured to encode and/or decode low density parity check (LDPC) coded signals. Such LDPC coded signals are characterized by LDPC matrices having a particular form. An LDPC matrix may be partitioned into a left hand side matrix and the right hand side matrix. The right hand side matrix can be lower triangular such that all of the sub-matrices therein are all-zero-valued sub-matrices (e.g., all of the elements within an all-zero-valued sub-matrix have the value of “0”) except for those sub-matrices located on a main diagonal of the right hand side matrix and another diagonal that is adjacently located to the left of the main diagonal. A device may be configured to employ different LDPC codes having different LDPC matrices for different LDPC coded signals. The different LDPC matrices may be based generally on a common form (e.g., with a right hand side matrix as described above).

Abstract translation: 通信设备被配置为对低密度奇偶校验（LDPC）编码信号进行编码和/或解码。 这样的LDPC编码信号的特征在于具有特定形式的LDPC矩阵。 LDPC矩阵可以被划分为左手侧矩阵和右手侧矩阵。 右侧的矩阵可以是较低的三角形，使得其中的所有子矩阵都是全零值子矩阵（例如，全零值子矩阵内的所有元素的值为“0” “），除了位于右手侧矩阵的主对角线上的那些子矩阵和相邻地位于主对角线左侧的另一对角线之外。 设备可以被配置为对不同的LDPC编码信号采用具有不同LDPC矩阵的不同LDPC码。 不同的LDPC矩阵通常可以基于普通形式（例如，如上所述使用右手侧矩阵）。

公开(公告)号：US20140201592A1

公开(公告)日：2014-07-17

申请号：US14068534

申请日：2013-10-31

Applicant: BROADCOM CORPORATION

Inventor： Ba-Zhong Shen ,  Avi Kliger ,  Tak K. Lee

IPC: H04L1/00

CPC classification number: H04L1/0041 ,  H03M13/1137 ,  H03M13/116 ,  H03M13/118 ,  H03M13/1185 ,  H03M13/6362 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/0068

Abstract: A communication device is configured to encode and/or decode low density parity check (LDPC) coded signals. Such LDPC coded signals are characterized by LDPC matrices having a particular form. An LDPC matrix may be partitioned into a left hand side matrix and the right hand side matrix. The right hand side matrix can be lower triangular such that all of the sub-matrices therein are all-zero-valued sub-matrices (e.g., all of the elements within an all-zero-valued sub-matrix have the value of “0”) except for those sub-matrices located on a main diagonal of the right hand side matrix and another diagonal that is adjacently located to the left of the main diagonal. A device may be configured to employ different LDPC codes having different LDPC matrices for different LDPC coded signals. The different LDPC matrices may be based generally on a common form (e.g., with a right hand side matrix as described above).

Abstract translation: 通信设备被配置为对低密度奇偶校验（LDPC）编码信号进行编码和/或解码。 这样的LDPC编码信号的特征在于具有特定形式的LDPC矩阵。 LDPC矩阵可以被划分为左手侧矩阵和右手侧矩阵。 右侧的矩阵可以是较低的三角形，使得其中的所有子矩阵都是全零值子矩阵（例如，全零值子矩阵内的所有元素的值为“0” “），除了位于右手侧矩阵的主对角线上的那些子矩阵和相邻地位于主对角线左侧的另一对角线之外。 设备可以被配置为对不同的LDPC编码信号采用具有不同LDPC矩阵的不同LDPC码。 不同的LDPC矩阵通常可以基于普通形式（例如，如上所述使用右手侧矩阵）。

公开(公告)号：US20140201588A1

公开(公告)日：2014-07-17

申请号：US14068479

申请日：2013-10-31

Applicant: BROADCOM CORPORATION

Inventor： Ba-Zhong Shen ,  Tak K. Lee ,  Jonathan S. Min ,  Avi Kliger ,  Richard S. Prodan

IPC: H04L1/00

CPC classification number: H04L1/0041 ,  H03M13/1137 ,  H03M13/116 ,  H03M13/1185 ,  H03M13/1188 ,  H03M13/35 ,  H04L1/0057

Abstract: A communication device is configured to encode and/or decode low density parity check (LDPC) coded signals. Such LDPC coded signals are characterized by LDPC matrices having a particular form. An LDPC matrix may be partitioned into a left hand side matrix and the right hand side matrix. The right hand side matrix can be lower triangular such that all of the sub-matrices therein are all-zero-valued sub-matrices (e.g., all of the elements within an all-zero-valued sub-matrix have the value of “0”) except for those sub-matrices located on a main diagonal of the right hand side matrix and another diagonal that is adjacently located to the left of the main diagonal. A device may be configured to employ different LDPC codes having different LDPC matrices for different LDPC coded signals. The different LDPC matrices may be based generally on a common form (e.g., with a right hand side matrix as described above).

Abstract translation: 通信设备被配置为对低密度奇偶校验（LDPC）编码信号进行编码和/或解码。 这样的LDPC编码信号的特征在于具有特定形式的LDPC矩阵。 LDPC矩阵可以被划分为左手侧矩阵和右手侧矩阵。 右侧的矩阵可以是较低的三角形，使得其中的所有子矩阵都是全零值子矩阵（例如，全零值子矩阵内的所有元素的值为“0” “），除了位于右手侧矩阵的主对角线上的那些子矩阵和相邻地位于主对角线左侧的另一对角线之外。 设备可以被配置为对不同的LDPC编码信号采用具有不同LDPC矩阵的不同LDPC码。 不同的LDPC矩阵通常可以基于普通形式（例如，如上所述使用右手侧矩阵）。

公开(公告)号：US20140169425A1

公开(公告)日：2014-06-19

申请号：US14099619

申请日：2013-12-06

Applicant: BROADCOM CORPORATION

Inventor： Thomas J. Kolze ,  Tak K. Lee ,  Ba-Zhong Shen ,  Richard S. Prodan

IPC: H04L25/03 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04L25/03343 ,  H04L1/0003 ,  H04L1/0071 ,  H04L5/0007 ,  H04L5/0044 ,  H04L27/2627

Abstract: A communication device is configured to perform processing of one or more bits to generate a modulation symbol sequence based on one or more profiles that specify variable bit loading of bits per symbol over at least some of the modulation symbols of the modulation symbol sequence. The communication device is also configured to perform interleaving of the modulation symbol sequence to generate OFDM symbol(s). Some modulation symbols within the modulation symbol sequence that are separated by an interleaver depth may be transmitted via adjacently located sub-carriers, while other modulation symbols within the modulation sequence that are separated by more than the interleaver depth may also be transmitted via adjacently located sub-carriers. A communication device may be configured to adapt and switch between different operational parameters used for bit loading, interleaving and/or deinterleaving at different times based on any desired considerations.

Abstract translation: 通信设备被配置为执行一个或多个比特的处理，以基于一个或多个简档来生成调制符号序列，所述一个或多个简档在调制符号序列的至少一些调制符号中指定每个符号的比特的可变比特加载。 通信设备还被配置为执行调制符号序列的交织以生成OFDM符号。 通过交织器深度分隔的调制符号序列内的一些调制符号可以经由相邻位置的子载波发送，而在调制序列内被隔离多于交织器深度的其他调制符号也可以经由相邻位置的子 载体。 通信设备可以被配置为基于任何期望的考虑，在不同的时间根据用于比特加载，交织和/或解交织的不同操作参数之间进行适配和切换。