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公开(公告)号：US20150349839A1
公开(公告)日：2015-12-03
申请号：US14825714
申请日：2015-08-13
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： June Chul Roh , Anuj Batra , Sudipto Chakraborty , Srinath Hosur
IPC: H04B1/7176
CPC classification number: H04B1/69 , H04B1/7176 , H04B2001/6908
Abstract: A symbol modulation system applicable to a body area network is disclosed herein. The symbol modulation system includes a symbol mapper. The symbol mapper is configured to determine a time within a predetermined symbol transmission interval at which a transmission representative of the symbol will occur. The time is determined based on a value of a symbol and a value of a time-hopping sequence. The time is selected from a plurality of symbol value based time slots, and a plurality of time-hopping sequence sub-time-slots within each symbol value based time slot. The symbol mapper is configured to generate a single guard interval within the symbol transmission interval. The single guard interval is positioned to terminate the symbol transmission interval.
Abstract translation: 本文公开了适用于体区网络的符号调制系统。 符号调制系统包括符号映射器。 符号映射器被配置为确定符号的传输代表将发生的预定符号传输间隔内的时间。 该时间基于符号的值和跳时序列的值来确定。 该时间是从基于多个符号值的时隙中选出的，以及在每个基于符号值的时隙内的多个跳时序列子时隙。 符号映射器被配置为在符号传输间隔内产生单个保护间隔。 单个保护间隔定位成终止符号传输间隔。
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公开(公告)号：US20150349823A1
公开(公告)日：2015-12-03
申请号：US14821264
申请日：2015-08-07
Applicant: Texas Instruments Incorporated
Inventor： Wenxun Qiu , Timothy Mark Schmidl , Minghua Fu , Anuj Batra
CPC classification number: H04B1/123 , H03G3/3078 , H03G3/3089 , H03M3/042 , H04B7/0811 , H04B17/20 , H04L27/14
Abstract: A wireless network receiver includes a detection module that uses preamble data in a data frame for signal processing functions and the detection module is configured to adjust the number of preamble data bits that are used based on the power of a received signal.
Abstract translation: 无线网络接收机包括检测模块，该检测模块使用用于信号处理功能的数据帧中的前导码数据，并且所述检测模块被配置为基于接收到的信号的功率来调整所使用的前导码数据位的数目。
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公开(公告)号：US09203472B2
公开(公告)日：2015-12-01
申请号：US14510944
申请日：2014-10-09
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Anuj Batra , Il Han Kim , Mehul Madhav Soman , Minghua Fu
CPC classification number: H04B3/54 , H04B2203/5425
Abstract: A system includes an analog front end (AFE) unit to be coupled to a power line network, and a controller coupled to the AFE unit. More specifically, the AFE unit is to receive a packet signal from the power line network wherein, based on a first gain parameter, the AFE unit is to amplify the received packet signal. The controller is configured to calculate a root-mean-square (RMS) power of the amplified packet signal. Further, the AFE unit is to calculate a second gain parameter based on the calculated RMS power of the amplified packet signal and the first gain parameter, wherein the second gain parameter is to be used to amplify the received packet signal instead of the first gain parameter.
Abstract translation: 系统包括要耦合到电力线网络的模拟前端（AFE）单元和耦合到AFE单元的控制器。 更具体地说，AFE单元将从电力线网络接收分组信号，其中基于第一增益参数，AFE单元将放大接收的分组信号。 控制器被配置为计算放大的分组信号的均方根（RMS）功率。 此外，AFE单元是基于所计算的放大的分组信号的RMS功率和第一增益参数来计算第二增益参数，其中第二增益参数将用于放大接收的分组信号而不是第一增益参数 。
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公开(公告)号：US09184794B1
公开(公告)日：2015-11-10
申请号：US14583853
申请日：2014-12-29
Applicant: Texas Instruments Incorporated
Inventor： Mostafa Sayed Ibrahim , Il Han Kim , Tarkesh Pande , Anuj Batra
CPC classification number: H04L27/2656 , H04B3/54 , H04B3/542 , H04B3/546 , H04B7/0413 , H04L1/188 , H04L5/0023 , H04L7/042 , H04L27/26 , H04L27/2602 , H04L27/2613 , H04L27/2655 , H04L27/2663 , H04W74/0816
Abstract: A PLC network system and method operative with OFDM for generating MIMO frames with suitable preamble portions configured to provide backward compatibility with legacy PLC devices and facilitate different receiver tasks such as frame detection and symbol timing, channel estimation and automatic gain control (AGC), including robust preamble detection in the presence of impulsive noise and frequency-selective channels of the PLC network. A MIMO PLC transmitter device may selectively vary amounts of cyclic shift (CS) for different transmit phases based on whether an initial CS vector elicits an ACK signal back from a PLC receiver within a timeout period.
Abstract translation: 一种PLC网络系统和方法，用于生成具有合适的前导码部分的MIMO帧的OFDM帧，其被配置为提供与传统PLC设备的向后兼容性，并且促进诸如帧检测和符号定时，信道估计和自动增益控制（AGC）的不同接收机任务，包括 在存在脉冲噪声和PLC网络的频率选择性通道的情况下进行鲁棒前同步码检测。 MIMO PLC发射机设备可以根据初始CS向量在超时时段内是否从PLC接收机返回ACK信号来选择性地改变针对不同发射阶段的循环移位量（CS）。
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公开(公告)号：US09036614B2
公开(公告)日：2015-05-19
申请号：US13917435
申请日：2013-06-13
Applicant: Texas Instruments Incorporated
Inventor： Anuj Batra , Timothy M. Schmidt , Srinath Hosur , June C. Roh
CPC classification number: H04W4/80 , H04L27/18 , H04L27/20 , H04L27/2675 , H04L69/22 , H04W52/36 , H04W52/367 , H04W72/0453 , H04W74/0816
Abstract: In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment based on a constant symbol rate for BAN packet transmissions and based on M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK modulation. The PHY layer is configured to transmit and receive data in a frequency band selected from the group consisting of: 402-405 MHz, 420-450 MHz, 863-870 MHz, 902-928 MHz, 950-956 MHz, 2360-2400 MHz, and 2400-2483.5 MHz.
Abstract translation: 在至少一些实施例中，通信设备包括具有物理（PHY）层的收发器。 基于用于BAN分组传输的恒定符号速率并且基于M-ary PSK，差分M-ary PSK或旋转差分M-ary PSK调制，PHY层被配置用于在有限多径环境中的体区域网络（BAN）操作。 PHY层被配置为从选自以下的频带发送和接收数据：402-405MHz，420-450MHz，863-870MHz，902-928MHz，950-956MHz，2360-2400MHz ，和2400-2483.5MHz。
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Patent Agency Ranking
公开(公告)号：US20140233609A1
公开(公告)日：2014-08-21
申请号：US14264708
申请日：2014-04-29
Applicant: Texas Instruments Incorporated
Inventor： June Chul Roh , Anuj Batra , Sudipto Chakraborty , Srinath Hosur
IPC: H04B1/7176
CPC classification number: H04B1/69 , H04B1/7176 , H04B2001/6908
Abstract: A symbol modulation system applicable to a body area network is disclosed herein. The symbol modulation system includes a symbol mapper. The symbol mapper is configured to determine a time within a predetermined symbol transmission interval at which a transmission representative of the symbol will occur. The time is determined based on a value of a symbol and a value of a time-hopping sequence. The time is selected from a plurality of symbol value based time slots, and a plurality of time-hopping sequence sub-time-slots within each symbol value based time slot. The symbol mapper is configured to generate a single guard interval within the symbol transmission interval. The single guard interval is positioned to terminate the symbol transmission interval.
Abstract translation: 本文公开了适用于体区网络的符号调制系统。 符号调制系统包括符号映射器。 符号映射器被配置为确定符号的传输代表将发生的预定符号传输间隔内的时间。 该时间基于符号的值和跳时序列的值来确定。 该时间是从基于多个符号值的时隙中选出的，以及在每个基于符号值的时隙内的多个跳时序列子时隙。 符号映射器被配置为在符号传输间隔内产生单个保护间隔。 单个保护间隔定位成终止符号传输间隔。
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公开(公告)号：US20140064412A1
公开(公告)日：2014-03-06
申请号：US14015728
申请日：2013-08-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Jing Lin , Il Han Kim , Tarkesh Pande , Anuj Batra
IPC: H04L27/22
CPC classification number: H04L27/22 , H04L25/03171 , H04L25/03242 , H04L27/2071
Abstract: A system includes a DPSK transmitter and a DPSK receiver. The DPSK transmitter is configured to encode a signal and transmit the encoded signal as a sequence of symbols. The DPSK receiver is configured to decode the sequence of symbols into bit values. The DPSK receiver further includes a first decoder which is configured to receive the sequence of the symbols, and to estimate extrinsic information for each symbol and forward the extrinsic information to a second decoder. Moreover, if magnitude of a LLR received form a second decoder is greater than a threshold, the first decoder is configured to determine a bit value of a received symbol, without considering neighboring symbols in the sequence of symbols. Still moreover, if the magnitude of the LLR received from the second decoder is not greater than the threshold, the first decoder is configured to continue to decode the received symbol and consider neighboring symbols in the sequence of symbols.
Abstract translation: 系统包括DPSK发射机和DPSK接收机。 DPSK发送器被配置为对信号进行编码，并将编码信号作为符号序列发送。 DPSK接收器被配置为将符号序列解码为比特值。 DPSK接收机还包括第一解码器，其被配置为接收符号的序列，并估计每个符号的外在信息，并将外部信息转发到第二解码器。 此外，如果从第二解码器接收的LLR的大小大于阈值，则第一解码器被配置为确定接收符号的比特值，而不考虑符号序列中的相邻符号。 此外，如果从第二解码器接收的LLR的大小不大于阈值，则第一解码器被配置为继续解码接收的符号并考虑符号序列中的相邻符号。
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公开(公告)号：US11824597B2
公开(公告)日：2023-11-21
申请号：US17333374
申请日：2021-05-28
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Il Han Kim , Tarkesh Pande , Anuj Batra
IPC: H04B3/54
CPC classification number: H04B3/542 , H04B2203/5433 , H04B2203/5466
Abstract: Embodiments include methods of powerline communications using a preamble with band extension is provided. A method may include receiving a packet data unit PDU. Bit-level repetition is applied to at least a portion of the PDU to create a repeated portion. Interleaving is performed per a subchannel. Pilot tones are inserted in the interleaved portion. Each data tone is modulated with respect to a nearest one of the inserted pilot tones. The PDU is transmitted over a power line.
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公开(公告)号：US20230300876A1
公开(公告)日：2023-09-21
申请号：US18324515
申请日：2023-05-26
Applicant: Texas Instruments Incorporated
Inventor： Bradford James Campbell , Ariton E. Xhafa , Anuj Batra
IPC: H04W72/56
Abstract: A system and method for optimizing power consumption of energy harvesting nodes in a wireless sensor network. In one embodiment, a system includes a network coordinator. The network coordinator includes a wireless transceiver and a controller. The wireless transceiver is configured to provide access to the wireless sensor network. The controller is configured to determine whether a wireless device that is wirelessly communicating with the network coordinator is powered via energy harvesting. The controller is also configured to schedule, based on a determination that the wireless device is powered via energy harvesting, the wireless device to communicate via the wireless sensor network using a priority timeslot of a superframe of the wireless sensor network. The priority timeslot is a timeslot occurring in an initial portion of the superframe.
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公开(公告)号：US20230300745A1
公开(公告)日：2023-09-21
申请号：US18322705
申请日：2023-05-24
Applicant: Texas Instruments Incorporated
Inventor： Ariton E. Xhafa , Bradford James Campbell , Anuj Batra , Srinath Hosur
IPC: H04W52/02
CPC classification number: H04W52/0216 , Y02D30/70
Abstract: A system and method for reducing energy consumption in a wireless network. In one embodiment, a system includes a network coordinator configured to manage access to a wireless network. The network coordinator includes a controller. The controller is configured to define a channel hopping list that specifies on which channel a beacon signal is transmitted in each slot frame of the wireless network. The controller is also configured to set a number of time slots in each slot frame based on a length of the channel hopping list. The controller is further configured to transmit a first beacon signal in each slot frame on a channel specified by the channel hopping list. The number of slots in each slot frame causes the first beacon signal to be transmitted on a same channel in each slot frame.
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