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1. 发明申请

US20110280261A1 Interleaver Design and Header Structure For ITU G.hnem 有权
标题翻译： ITU G.hnem的交织器设计和标题结构
公开(公告)号：US20110280261A1
公开(公告)日：2011-11-17
申请号：US13101938
申请日：2011-05-05
申请人： Badri N. Varadarajan , Anand Dabak , Il Han Kim
发明人： Badri N. Varadarajan , Anand Dabak , Il Han Kim
IPC分类号： H04J99/00
CPC分类号： H04L27/20 , H04L5/0007 , H04L27/2602 , H04L27/2647
摘要： Embodiments of the invention provide an interleaver design and header fields for ITU-T G.hnem. The header may comprise two parts that are separately encoded. A common header segment is encoded alone, and an embedded header segment is encoded with payload data. The interleaver operates on blocks having a size based upon a total number of input bits in an FEC codeword block, a total number of bits loaded on symbols that span a half mains cycle, or a maximum fragment size of 3072 bits. The blocks may be repeated before interleaving. Each block and its repetitions may be interleaved together, such as for header data, or each block and repetition may be interleaved separately, such as for payload data. Cyclic padding may be used on each block to create an integer number of symbols for transmission.
摘要翻译：本发明的实施例提供了用于ITU-T G.hnem的交织器设计和报头字段。标题可以包括分开编码的两个部分。公共头段被单独编码，并且嵌入的标题段用有效载荷数据进行编码。交织器对具有基于FEC码字块中的输入位的总数的大小的块，对跨越半电源周期的符号上加载的总位数或3072位的最大片段大小进行操作。可以在交织之前重复这些块。每个块及其重复可以交织在一起，诸如用于报头数据，或者每个块和重复可以被单独交织，诸如用于有效载荷数据。可以在每个块上使用循环填充来创建用于传输的整数个符号。

2. 发明申请

US20120002714A1 Communication on a Pilot Wire 有权
标题翻译：飞行员通讯
公开(公告)号：US20120002714A1
公开(公告)日：2012-01-05
申请号：US13163513
申请日：2011-06-17
申请人： Badri N. Varadarajan , Il Han Kim , Anand Dabak , Edward Mullins
发明人： Badri N. Varadarajan , Il Han Kim , Anand Dabak , Edward Mullins
IPC分类号： H03K7/08
CPC分类号： H03K7/08 , H04B3/54 , H04B2203/5416 , H04L25/4902
摘要： Systems and methods are disclosed for communicating on a pilot wire between Electric Vehicle Service Equipment (EVSE) and an Electric Vehicle (EV). The EVSE and EV exchange a Pulse Width Modulation (PWM) signal on the pilot wire to control charging operations of the EV. Data communications may also be transmitted on the pilot wire, such as between transmit and receive modems. The modems transmit communication signals either continuously, without regard to the state of the PWM signal, or only when the PWM is in an off-state. If transmitting while PWM is on, the modem needs a large coupling impedance and/or a large signal injection. To transmit only when the PWM is off, the modem may use a blocking diode in the coupling circuit or may synchronize to the pulses in the PWM signal.
摘要翻译：公开了用于在电动车辆服务设备（EVSE）和电动车辆（EV）之间的导线上通信的系统和方法。 EVSE和EV在导线上交换脉宽调制（PWM）信号，以控制EV的充电操作。数据通信也可以在导线上传输，例如在发射和接收调制解调器之间。调制解调器连续发送通信信号，而不考虑PWM信号的状态，或仅当PWM处于关闭状态时。如果在PWM打开时发送，则调制解调器需要大的耦合阻抗和/或大的信号注入。仅在PWM关闭时传输，调制解调器可以在耦合电路中使用阻塞二极管，或者可以与PWM信号中的脉冲同步。

3. 发明授权

US09112753B2 Interleaver design and header structure for ITU G.hnem 有权
标题翻译： ITU G.hnem的交织器设计和标题结构
公开(公告)号：US09112753B2
公开(公告)日：2015-08-18
申请号：US13101938
申请日：2011-05-05
申请人： Badri N. Varadarajan , Anand Dabak , Il Han Kim
发明人： Badri N. Varadarajan , Anand Dabak , Il Han Kim
IPC分类号： H04J99/00 , H04L27/20 , H04L27/26 , H04L5/00
CPC分类号： H04L27/20 , H04L5/0007 , H04L27/2602 , H04L27/2647
摘要： Embodiments of the invention provide an interleaver design and header fields for ITU-T G.hnem. The header may comprise two parts that are separately encoded. A common header segment is encoded alone, and an embedded header segment is encoded with payload data. The interleaver operates on blocks having a size based upon a total number of input bits in an FEC codeword block, a total number of bits loaded on symbols that span a half mains cycle, or a maximum fragment size of 3072 bits. The blocks may be repeated before interleaving. Each block and its repetitions may be interleaved together, such as for header data, or each block and repetition may be interleaved separately, such as for payload data. Cyclic padding may be used on each block to create an integer number of symbols for transmission.
摘要翻译：本发明的实施例提供了用于ITU-T G.hnem的交织器设计和报头字段。标题可以包括分开编码的两个部分。公共头段被单独编码，并且嵌入的标题段用有效载荷数据进行编码。交织器对具有基于FEC码字块中的输入位的总数的大小的块，对跨越半电源周期的符号上加载的总位数或3072位的最大片段大小进行操作。可以在交织之前重复这些块。每个块及其重复可以交织在一起，诸如用于报头数据，或者每个块和重复可以被单独交织，诸如用于有效载荷数据。可以在每个块上使用循环填充来创建用于传输的整数个符号。

4. 发明申请

US20100272192A1 OFDM-Lite Architecture for HomePlug 有权
标题翻译：用于HomePlug的OFDM-Lite架构
公开(公告)号：US20100272192A1
公开(公告)日：2010-10-28
申请号：US12768676
申请日：2010-04-27
申请人： Badri Varadarajan , Anand Dabak , Shu Du , Il Han Kim
发明人： Badri Varadarajan , Anand Dabak , Shu Du , Il Han Kim
IPC分类号： H04L27/28 , H04L25/00
CPC分类号： H04L27/2613
摘要： A device for communicating digital data over power lines includes a power line interface for transmitting data over at least one band of frequencies. An orthogonal frequency division multiplexing (OFDM) modulation unit generates OFDM symbols using a set of tones for the frequency band. A preamble generation unit generates preamble sequences for the frequency band by using the set of tones used by the OFDM modulation unit. The tones used by the preamble generation unit have a constant magnitude, and a set of phases obtained by quantizing to a small alphabet the phase of a set of tones obtained by taking an IFFT of a portion of a preamble used by a non-interoperable powerline access device. The device may transmit on two or more bands using a sampling frequency clock, wherein a lower band clock frequency is equal to or an integer divisor of a higher band clock frequency.
摘要翻译：用于通过电力线传送数字数据的装置包括用于通过至少一个频带传送数据的电力线接口。正交频分复用（OFDM）调制单元使用用于频带的一组音调来生成OFDM符号。前导码生成单元通过使用由OFDM调制单元使用的音调集合来生成用于频带的前同步码序列。由前置码生成单元使用的音调具有恒定的幅度，以及通过将非可互操作的电力线使用的前置部分的一部分的IFFT获得的一组音调的相位来量化到小的字母而获得的一组相位访问设备该装置可以使用采样频率时钟在两个或更多个频带上进行传输，其中较低频带时钟频率等于或更高频带时钟频率的整数除数。

5. 发明授权

US08831077B2 Communication on a pilot wire 有权
标题翻译：在导线上进行通讯
公开(公告)号：US08831077B2
公开(公告)日：2014-09-09
申请号：US13163513
申请日：2011-06-17
申请人： Badri Varadarajan , Il Han Kim , Anand Dabak , Edward Mullins
发明人： Badri Varadarajan , Il Han Kim , Anand Dabak , Edward Mullins
IPC分类号： H04B1/38 , H04B3/54 , H04L25/49 , H03K7/08
CPC分类号： H03K7/08 , H04B3/54 , H04B2203/5416 , H04L25/4902
摘要： Systems and methods are disclosed for communicating on a pilot wire between Electric Vehicle Service Equipment (EVSE) and an Electric Vehicle (EV). The EVSE and EV exchange a Pulse Width Modulation (PWM) signal on the pilot wire to control charging operations of the EV. Data communications may also be transmitted on the pilot wire, such as between transmit and receive modems. The modems transmit communication signals either continuously, without regard to the state of the PWM signal, or only when the PWM is in an off-state. If transmitting while PWM is on, the modem needs a large coupling impedance and/or a large signal injection. To transmit only when the PWM is off, the modem may use a blocking diode in the coupling circuit or may synchronize to the pulses in the PWM signal.
摘要翻译：公开了用于在电动车辆服务设备（EVSE）和电动车辆（EV）之间的导线上通信的系统和方法。 EVSE和EV在导线上交换脉宽调制（PWM）信号，以控制EV的充电操作。数据通信也可以在导线上传输，例如在发射和接收调制解调器之间。调制解调器连续发送通信信号，而不考虑PWM信号的状态，或仅当PWM处于关闭状态时。如果在PWM打开时发送，则调制解调器需要大的耦合阻抗和/或大的信号注入。仅在PWM关闭时传输，调制解调器可以在耦合电路中使用阻塞二极管，或者可以与PWM信号中的脉冲同步。

6. 发明授权

US08649443B2 OFDM-lite architecture for HomePlug 有权
标题翻译： HomePlug的OFDM-lite架构
公开(公告)号：US08649443B2
公开(公告)日：2014-02-11
申请号：US12768676
申请日：2010-04-27
申请人： Badri Varadarajan , Anand Dabak , Shu Du , Il Han Kim
发明人： Badri Varadarajan , Anand Dabak , Shu Du , Il Han Kim
IPC分类号： H04L25/00
CPC分类号： H04L27/2613
摘要： A device for communicating digital data over power lines includes a power line interface for transmitting data over at least one band of frequencies. An orthogonal frequency division multiplexing (OFDM) modulation unit generates OFDM symbols using a set of tones for the frequency band. A preamble generation unit generates preamble sequences for the frequency band by using the set of tones used by the OFDM modulation unit. The tones used by the preamble generation unit have a constant magnitude, and a set of phases obtained by quantizing to a small alphabet the phase of a set of tones obtained by taking an IFFT of a portion of a preamble used by a non-interoperable powerline access device. The device may transmit on two or more bands using a sampling frequency clock, wherein a lower band clock frequency is equal to or an integer divisor of a higher band clock frequency.
摘要翻译：用于通过电力线传送数字数据的装置包括用于通过至少一个频带传送数据的电力线接口。正交频分复用（OFDM）调制单元使用用于频带的一组音调来生成OFDM符号。前导码生成单元通过使用由OFDM调制单元使用的音调集合来生成用于频带的前同步码序列。由前置码生成单元使用的音调具有恒定的幅度，以及通过将非可互操作的电力线使用的前置部分的一部分的IFFT获得的一组音调的相位来量化到小的字母而获得的一组相位访问设备该装置可以使用采样频率时钟在两个或更多个频带上进行传输，其中较低频带时钟频率等于较高频带时钟频率的整数除数。

7. 发明申请

US20120257639A1 Communications in Beacon-Enabled Networks 有权
标题翻译：信标网络中的通信
公开(公告)号：US20120257639A1
公开(公告)日：2012-10-11
申请号：US13435862
申请日：2012-03-30
申请人： Kumaran Vijayasankar , Shu Du , Anand Dabak , Badri Varadarajan , Il Han Kim , Xiaolin Lu
发明人： Kumaran Vijayasankar , Shu Du , Anand Dabak , Badri Varadarajan , Il Han Kim , Xiaolin Lu
IPC分类号： H04J4/00 , H04J3/00 , H04B3/54
CPC分类号： H04B3/542 , H04L5/0007 , H04L5/0048 , H04L5/0053 , H04L5/0073
摘要： Systems and methods for designing, using, and/or implementing communications in beacon-enabled networks are described. In various implementations, these systems and methods may be applicable to power line communications (PLC). For example, a method may include identifying one of a plurality of orthogonal superframes. The identified superframe may include beacon slots and contention access period (CAP) slots. The beacon slots may follow a sequence of two or more frequency subbands, and the CAP slots may follow the same sequence of two or more frequency subbands. Also, the sequence of two or more frequency subbands may be distinct from other sequences of two or more frequency subbands followed by other beacon slots and CAP slots within others of the plurality of available superframes. The method may then include communicating with another device using the identified superframe.
摘要翻译：描述了在启用信标的网络中设计，使用和/或实现通信的系统和方法。在各种实现中，这些系统和方法可以应用于电力线通信（PLC）。例如，方法可以包括识别多个正交超帧中的一个。所识别的超帧可以包括信标时隙和竞争接入时隙（CAP）时隙。信标时隙可以遵循两个或更多个频率子带的序列，并且CAP时隙可以遵循两个或更多个频率子带的相同序列。而且，两个或多个频率子带的序列可以与两个或多个频率子带的其他序列不同，后面是多个可用超帧中的其他信标时隙和CAP时隙。该方法然后可以包括使用所识别的超帧与另一设备进行通信。

8. 发明授权

US08964786B2 Communications in beacon-enabled networks 有权
标题翻译：信标启用网络中的通信
公开(公告)号：US08964786B2
公开(公告)日：2015-02-24
申请号：US13435862
申请日：2012-03-30
申请人： Kumaran Vijayasankar , Shu Du , Anand Dabak , Badri Varadarajan , Il Han Kim , Xiaolin Lu
发明人： Kumaran Vijayasankar , Shu Du , Anand Dabak , Badri Varadarajan , Il Han Kim , Xiaolin Lu
IPC分类号： H04J4/00 , H04B3/54 , H04L5/00
CPC分类号： H04B3/542 , H04L5/0007 , H04L5/0048 , H04L5/0053 , H04L5/0073
摘要： Systems and methods for designing, using, and/or implementing communications in beacon-enabled networks are described. In various implementations, these systems and methods may be applicable to power line communications (PLC). For example, a method may include identifying one of a plurality of orthogonal superframes. The identified superframe may include beacon slots and contention access period (CAP) slots. The beacon slots may follow a sequence of two or more frequency subbands, and the CAP slots may follow the same sequence of two or more frequency subbands. Also, the sequence of two or more frequency subbands may be distinct from other sequences of two or more frequency subbands followed by other beacon slots and CAP slots within others of the plurality of available superframes. The method may then include communicating with another device using the identified superframe.
摘要翻译：描述了在启用信标的网络中设计，使用和/或实现通信的系统和方法。在各种实现中，这些系统和方法可以应用于电力线通信（PLC）。例如，方法可以包括识别多个正交超帧中的一个。所识别的超帧可以包括信标时隙和竞争接入时隙（CAP）时隙。信标时隙可以遵循两个或更多个频率子带的序列，并且CAP时隙可以遵循两个或更多个频率子带的相同序列。而且，两个或多个频率子带的序列可以与两个或多个频率子带的其他序列不同，后面是多个可用超帧中的其他信标时隙和CAP时隙。该方法然后可以包括使用所识别的超帧与另一设备进行通信。

9. 发明申请

US20120082253A1 Pilot Structure for Coherent Modulation 审中-公开
标题翻译：相干调制的导频结构
公开(公告)号：US20120082253A1
公开(公告)日：2012-04-05
申请号：US13175045
申请日：2011-07-01
申请人： Badri Varadarajan , Anand Dabak , Il Han Kim , Akula Aneesh Reddy
发明人： Badri Varadarajan , Anand Dabak , Il Han Kim , Akula Aneesh Reddy
IPC分类号： H04B15/00 , H04L27/06 , H04L27/28
CPC分类号： H04B3/542 , H04B2203/5433 , H04B2203/5445 , H04B2203/5458 , H04L5/0042 , H04L5/0048 , H04L25/0204 , H04L25/0232 , H04L27/2647
摘要： A system and method for communicating in a power line communications (PLC) network using Orthogonal Frequency-Division Multiplexing (OFDM) symbols. Pilot tones are carried by the OFDM symbols according to a predetermined pattern. A receiving device identifies pilot tones on each frequency. A group of previously received pilot tones on a selected frequency are filtered to generate a channel estimate for a tone on the selected frequency in a new symbol. The channel estimates on two different frequencies within an OFDM symbol may be interpolated to determine a channel estimate for a third frequency with the OFDM symbol.
摘要翻译：一种用于使用正交频分复用（OFDM）符号在电力线通信（PLC）网络中进行通信的系统和方法。导频音由根据预定模式的OFDM符号承载。接收设备识别每个频率上的导频音。对选定频率上的一组以前接收到的导频音进行滤波，以生成新符号中选定频率上的音调的信道估计。可以内插OFDM符号内的两个不同频率的信道估计，以确定具有OFDM符号的第三频率的信道估计。

10. 发明申请

US20120033722A1 Time-Domain Link Adaptation 有权
标题翻译：时域链接适配
公开(公告)号：US20120033722A1
公开(公告)日：2012-02-09
申请号：US13179202
申请日：2011-07-08
申请人： Badri Varadarajan , Anand Dabak , Il Han Kim
发明人： Badri Varadarajan , Anand Dabak , Il Han Kim
IPC分类号： H04B3/46 , H04L27/28 , H04B17/00
CPC分类号： H04L27/2666 , H04B3/46 , H04B3/54 , H04B2203/5408 , H04B2203/5416 , H04B2203/542 , H04B2203/5425 , H04L1/0002 , H04L1/0019 , H04L5/0003 , H04L27/2607 , H04L27/2671
摘要： Embodiments of the invention provide time-domain link adaptation in power line communications. In one embodiment, the cyclic prefix length and position is adjusted with an OFDM symbol to overlap a periodic impulse noise pulse, thereby allowing the data carried in the symbol to be detected at a receiver. The cyclic prefix may be adjusted to provide a pattern that yields an integer number of OFDM symbols in one zero crossing period. The data rate used for the symbols overlapping the zero-crossing period may be zero or very low. A high data rate may be used for symbols outside the zero-crossing period because those symbols will not be affected by the periodic impulse noise.
摘要翻译：本发明的实施例提供了电力线通信中的时域链路自适应。在一个实施例中，循环前缀长度和位置用OFDM符号调整以与周期性脉冲噪声脉冲重叠，从而允许在接收器处检测符号中携带的数据。可以调整循环前缀以提供在一个零交叉周期中产生整数个OFDM符号的模式。用于与过零周期重叠的符号的数据速率可以为零或非常低。由于这些符号不受周期脉冲噪声的影响，因此高数据速率可用于过零周期以外的符号。

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