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    APPARATUS AND METHOD FOR MULTILEVEL CODING (MLC) WITH BINARY ALPHABET POLAR CODES
    91.
    发明申请
    APPARATUS AND METHOD FOR MULTILEVEL CODING (MLC) WITH BINARY ALPHABET POLAR CODES 审中-公开

    公开(公告)号：US20200021307A1

    公开(公告)日：2020-01-16

    申请号：US16583944

    申请日：2019-09-26

    Applicant: Texas Instruments Incorporated

    Inventor： Corina Ioana Ionita ,  Jun Chul Roh ,  Mohamed F. Mansour ,  Srinath Hosur

    IPC: H03M5/18 ,  H03M13/25 ,  H04L1/00 ,  H04L25/49 ,  H04L27/36

    Abstract: A method includes receiving multiple bits to be transmitted. The method also includes applying a first binary alphabet polar code to a first subset of the multiple bits to generate first encoded bits. The first encoded bits are associated with a first bit level of a multilevel coding scheme. The method further includes generating one or more symbols using the first encoded bits and bits associated with a second bit level of the multilevel coding scheme. The first binary alphabet polar code is associated with a first coding rate. In addition, the method could include applying a second binary alphabet polar code to a second subset of the multiple bits to generate second encoded bits. The second encoded bits are associated with the second bit level. The second binary alphabet polar code is associated with a second coding rate such that the bit levels have substantially equal error rates.

    Short and long training fields
    95.
    发明授权
    Short and long training fields 有权

    公开(公告)号：US10034252B2

    公开(公告)日：2018-07-24

    申请号：US14025628

    申请日：2013-09-12

    Applicant: Texas Instruments Incorporated

    Inventor： Timothy M. Schmidl ,  Anuj Batra ,  Srinath Hosur

    IPC: H04W56/00 ,  H04L27/26 ,  H04W4/80

    Abstract: A method includes receiving a first plurality of symbols comprising complex portions. The method further includes applying conjugate symmetry to the first plurality of symbols, producing a second plurality of symbols comprising no complex portions. The method further includes transforming the second plurality of symbols using an inverse fast Fourier transform, producing a third plurality of symbols. The method further includes interpolating the third plurality of symbols, generating a short training field comprising at least one real portion of the third plurality of symbols, generating a long training field comprising at least one real portion of the third plurality of symbols, and transmitting the short training field and long training field in a WPAN.

    ULTRA WIDEBAND MODULATION FOR BODY AREA NETWORKS
    99.
    发明申请
    ULTRA WIDEBAND MODULATION FOR BODY AREA NETWORKS 审中-公开
    超声波宽带调制系统

    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。

    Coexistence of wireless sensor networks with other wireless networks
    100.
    发明授权
    Coexistence of wireless sensor networks with other wireless networks 有权
    无线传感器网络与其他无线网络的共存

    公开(公告)号：US09204486B2

    公开(公告)日：2015-12-01

    申请号：US13852174

    申请日：2013-03-28

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Ariton E. Xhafa ,  Soon-Hyeok Choi ,  Srinath Hosur ,  Yanjun Sun

    IPC: H04J1/16 ,  H04W84/18 ,  H04W72/12 ,  H04W88/06

    CPC classification number: H04W72/1215 ,  H04W4/80 ,  H04W84/12 ,  H04W84/18 ,  H04W88/06

    Abstract: A wireless device includes a wireless transceiver configured to transmit to and receive from nodes in a wireless sensor network (WSN) and control logic coupled to the first wireless transceiver. The wireless transceiver transmits a wireless packet to a node in the WSN based on the transmission coinciding with a break in transmissions for a second wireless network. Based on the wireless transceiver being configured to transmit the wireless packets utilizing time synchronized channel hopping, slot frames for packet transmissions in the WSN are time offset so as not to coincide with transmissions made on the second wireless network. Based on the wireless transceiver being configured to transmit the packets utilizing coordinated sampled listening, wake up sequence transmissions for the WSN are time offset so as not to coincide with the transmissions made on the second wireless network.

    Abstract translation: 无线设备包括被配置为向无线传感器网络（WSN）中的节点传送和从其接收的无线收发机以及耦合到第一无线收发器的控制逻辑。 无线收发器基于与第二无线网络的传输中断一致的传输将无线分组传送到WSN中的节点。 基于无线收发器被配置为使用时间同步信道跳频发送无线分组，用于WSN中的分组传输的时隙帧是时间偏移的，以便不与在第二无线网络上进行的传输相一致。 基于无线收发器被配置为使用协调采样监听来发送分组，用于WSN的唤醒序列传输是时间偏移，以便不与在第二无线网络上进行的传输相一致。

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