公开(公告)号：US09264101B2

公开(公告)日：2016-02-16

申请号：US14215619

申请日：2014-03-17

Applicant: BROADCOM CORPORATION

Inventor： Bruce Joseph Currivan ,  Richard Stephen Prodan ,  Thomas Joseph Kolze ,  Hanli Zou ,  Ramon Alejandro Gomez ,  Leo Montreuil ,  Mark Edward Laubach ,  Roger Wayne Fish ,  Lisa Voigt Denney ,  Niki Roberta Pantelias ,  Jonathan Sooki Min

IPC: H04B3/46 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04L12/2885 ,  H04B3/46 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0226 ,  H04L27/2605 ,  H04L27/2613

Abstract: A transmitter for use in a cable modem termination system includes a data processing module that generates a plurality of OFDM symbols from a data packet. A probe symbol generator generates a probe symbol, as one of a plurality of probe symbol types. The probe symbol is selectively inserted within the plurality of OFDM symbols, at a pre-defined probe symbol interval.

公开(公告)号：US20150256367A1

公开(公告)日：2015-09-10

申请号：US14643228

申请日：2015-03-10

Applicant: BROADCOM CORPORATION

Inventor： Richard Stephen Prodan ,  Mark Edward Laubach ,  Leo Montreuil

IPC: H04L25/40 ,  H04J14/08 ,  H04L1/00 ,  H04B10/2575 ,  H04L27/26 ,  H04J4/00

CPC classification number: H04L25/40 ,  H04B10/2575 ,  H04J14/08 ,  H04L1/0041 ,  H04L1/0042 ,  H04L1/0045 ,  H04L1/0057 ,  H04L5/0007 ,  H04L5/0039 ,  H04L5/0048 ,  H04L27/2602 ,  H04L27/2613 ,  H04L27/2627 ,  H04L27/2656 ,  H04L27/2692

Abstract: A communication device includes a communication interface and a processor configured to generate, transmit, receive, and process signals. The communication device generates orthogonal frequency division multiplexing (OFDM) frame(s) that include a two-dimensional (2D) start burst marker (BM), a data payload, and a 2D stop BM, and transmits the OFDM frame(s) to another communication device. Alternatively, the communication device receives OFDM frame(s) that include a 2D start BM and a 2D stop BM, and then identifies a data payload within those OFDM frame(s) based on the 2D start burst marker and a 2D stop BM. The 2D start and stop BMs are based on predetermined sequences having particular formats based on corresponding 2D sub-carrier and OFDM/A frame based structure. A receiver communication device then detects the 2D start BM and 2D stop BM within the received OFDM frame(s) based on knowledge of these predetermined sequences and particular formats.

Abstract translation: 通信设备包括通信接口和被配置为生成，发送，接收和处理信号的处理器。 通信设备产生包括二维（2D）开始突发标记（BM），数据有效载荷和2D停止BM的正交频分复用（OFDM）帧，并将OFDM帧发送到 另一种通信设备。 或者，通信设备接收包括2D起始BM和2D停止BM的OFDM帧，然后基于2D开始突发标记和2D停止BM来识别那些OFDM帧内的数据有效载荷。 2D开始和停止BM基于基于相应的2D子载波和基于OFDM / A帧的结构的具有特定格式的预定序列。 接收机通信设备然后基于这些预定序列和特定格式的知识来检测所接收的OFDM帧内的2D起始BM和2D停止BM。

公开(公告)号：US20150063484A1

公开(公告)日：2015-03-05

申请号：US14471301

申请日：2014-08-28

Applicant: BROADCOM CORPORATION

Inventor： Avraham Kliger ,  Tak Kwan Lee ,  Richard Stephen Prodan ,  Ba-Zhong Shen ,  Yitshak Ohana

IPC: H04L27/26 ,  H04L1/00 ,  H03M13/27

CPC classification number: H04L27/2627 ,  H03M13/09 ,  H03M13/1102 ,  H03M13/1515 ,  H03M13/152 ,  H03M13/23 ,  H03M13/258 ,  H03M13/2707 ,  H03M13/271 ,  H03M13/2789 ,  H03M13/2957 ,  H04L1/0042 ,  H04L27/2634

Abstract: A communication device includes a communication interface and a processor. In one example, the processor generates an orthogonal frequency division multiplexing (OFDM) symbol that includes information modulated within sub-carriers and then interleaves the sub-carriers of the OFDM symbol to generate an interleaved OFDM symbol. This interleaving of the sub-carriers operates to write the plurality of sub-carriers to rows of a two dimensional (2D) array and read the plurality of sub-carriers from columns of the 2D array. This interleaving also operates to read a column of the columns using a bit-reversed address of the column when the bit-reversed address is less than a number of the columns and using the address of the column when the bit-reversed address is greater than or equal to the number of the columns. The processor transmits, via the communication interface, the interleaved OFDM symbol to another communication device.

Abstract translation: 通信设备包括通信接口和处理器。 在一个示例中，处理器产生包括在子载波内调制的信息的正交频分复用（OFDM）符号，然后对OFDM符号的子载波进行交织以产生交错的OFDM符号。 子载波的这种交织操作以将多个子载波写入二维（2D）阵列的行，并从2D阵列的列读取多个子载波。 当比特反转地址小于列数时，使用位反转地址比特反转地址大于等于列的地址时，该交织也可以使用列的位反转地址来读列。 或等于列数。 处理器经由通信接口将交错的OFDM符号发送到另一通信设备。