公开(公告)号：US20110028182A1

公开(公告)日：2011-02-03

申请号：US12903776

申请日：2010-10-13

Applicant: Jason A. Trachewsky ,  Alan Corry ,  Venkat Kodavati

Inventor： Jason A. Trachewsky ,  Alan Corry ,  Venkat Kodavati

IPC: H04M1/00

CPC classification number: H04B1/406

Abstract: A multimode wireless communication device includes a first radio section operably to convert outbound analog baseband signals into first outbound RF signals and to convert first inbound RF signals into inbound analog baseband signals when the wireless communication device is in a first mode of operation and a second radio section that performs similar functions in a second mode of operation. A diplexer section includes a first diplexer for coupling to a first antenna, and a second diplexer for coupling to a second antenna, and that selectively couples the first radio section to one of the first antenna and the second antenna, and that selectively couples the second radio section to one of the first antenna and the second antenna. First and second T/R switches are coupled to the first and second diplexers and to respectively, to the first and second radio sections.

Abstract translation: 多模无线通信设备包括第一无线电部分，其可操作地将出站的模拟基带信号转换为第一出站RF信号，并且当无线通信设备处于第一操作模式时将第一入站RF信号转换为入站模拟基带信号， 在第二操作模式下执行类似功能的部分。 双工器部分包括用于耦合到第一天线的第一双工器和用于耦合到第二天线的第二双工器，并且将第一无线电部分选择性地耦合到第一天线和第二天线之一，并且选择性地将第二天线 无线电部分到第一天线和第二天线之一。 第一和第二T / R开关耦合到第一和第二双工器，并且分别耦合到第一和第二无线电部分。

公开(公告)号：US07535978B2

公开(公告)日：2009-05-19

申请号：US12020478

申请日：2008-01-25

Applicant: Jason A. Trachewsky ,  Alan Corry

Inventor： Jason A. Trachewsky ,  Alan Corry

IPC: H04L27/06

CPC classification number: H04L27/2647 ,  H04L7/041 ,  H04L7/08

Abstract: A method for accurate signal detection begins by receiving a radio frequency signal, which is then converted into baseband signals. The processing then continues by performing a normalized auto correlation on the down-converted baseband signal to produce a normalized auto correlation signal. The process continues by performing a periodic pattern detection on the down-converted baseband signal to produce a normalized detected periodic signal. The process then continues by comparing the normalized auto correlation value with an auto correlation threshold and by comparing the normalized detected periodic signal with a set of thresholds. When the normalized auto correlation value compares favorably with the auto correlation threshold and when the normalized detected periodic signal compares favorably with the set of thresholds, the down-converted baseband signal is indicated to be a valid signal.

Abstract translation: 用于准确信号检测的方法是通过接收射频信号开始的，然后将其转换为基带信号。 然后通过对下变频的基带信号执行归一化的自相关来继续处理，以产生归一化的自相关信号。 该过程通过对下变频的基带信号执行周期性模式检测以产生归一化的检测周期信号而继续。 然后，通过将归一化自相关值与自相关阈值进行比较并通过将归一化检测到的周期信号与一组阈值进行比较来继续该过程。 当归一化自相关值与自相关阈值相比较好时，并且当归一化检测到的周期信号与阈值集合相比较时，下转换的基带信号被指示为有效信号。

公开(公告)号：US07349499B2

公开(公告)日：2008-03-25

申请号：US10817542

申请日：2004-04-02

Applicant: Jason A. Trachewsky ,  Alan Corry

Inventor： Jason A. Trachewsky ,  Alan Corry

IPC: H03D1/00

CPC classification number: H04B1/0475 ,  H04L7/041 ,  H04L7/08 ,  H04L27/2647

Abstract: A method for accurate signal detection begins by receiving a radio frequency signal, which is then converted into baseband signals. The processing then continues by performing a normalized auto correlation on the down-converted baseband signal to produce a normalized auto correlation signal. The process continues by performing a periodic pattern detection on the down-converted baseband signal to produce a normalized detected periodic signal. The process then continues by comparing the normalized auto correlation value with an auto correlation threshold and by comparing the normalized detected periodic signal with a set of thresholds. When the normalized auto correlation value compares favorably with the auto correlation threshold and when the normalized detected periodic signal compares favorably with the set of thresholds, the down-converted baseband signal is indicated to be a valid signal.

Abstract translation: 用于准确信号检测的方法是通过接收射频信号开始的，然后将其转换为基带信号。 然后通过对下变频的基带信号执行归一化的自相关来继续处理，以产生归一化的自相关信号。 该过程通过对下变频的基带信号执行周期性模式检测以产生归一化的检测周期信号而继续。 然后，通过将归一化自相关值与自相关阈值进行比较并通过将归一化检测到的周期信号与一组阈值进行比较来继续该过程。 当归一化自相关值与自相关阈值相比较好时，并且当归一化检测到的周期信号与阈值集合相比较时，下转换的基带信号被指示为有效信号。

公开(公告)号：US20050227728A1

公开(公告)日：2005-10-13

申请号：US10817541

申请日：2004-04-02

Applicant: Jason Trachewsky ,  Alan Corry ,  Venkat Kodavati

Inventor： Jason Trachewsky ,  Alan Corry ,  Venkat Kodavati

IPC: H01Q11/12 ,  H04B1/02 ,  H04B1/04 ,  H04B1/40

CPC classification number: H04B1/406

Abstract: A multimode wireless communication includes a digital baseband processing module, an analog to digital converter module, a digital to analog converter module, a first radio section, and a second radio section. The digital baseband processing module is operably coupled to convert outbound data into outbound digital baseband signals and to convert inbound digital baseband signals into inbound data. The analog to digital converter module is operably coupled to convert inbound analog baseband signals into the inbound digital baseband signals. The digital to analog converter module is operably coupled to convert the outbound digital baseband signals into outbound analog baseband signals. The first radio section is operably coupled to convert the outbound analog baseband signals into first outbound radio frequency (RF) signals and to convert first inbound RF signals into the inbound analog baseband signals when the wireless communication device is in a first mode of operation. The second radio section is operably coupled to convert the outbound analog baseband signals into second outbound RF signals and to convert second inbound RF signals into the inbound analog baseband signals when the wireless communication device is in a second mode of operation.

Abstract translation: 多模无线通信包括数字基带处理模块，模数转换器模块，数模转换器模块，第一无线电部分和第二无线电部分。 数字基带处理模块可操作地耦合以将出站数据转换为出站数字基带信号，并将入站数字基带信号转换为入站数据。 模数转换器模块可操作地耦合以将入站模拟基带信号转换成入站数字基带信号。 数模转换器模块可操作地耦合以将出站数字基带信号转换为出站模拟基带信号。 第一无线电部分可操作地耦合以将出站模拟基带信号转换为第一出站射频（RF）信号，并且当无线通信设备处于第一操作模式时，将第一入站RF信号转换成入站模拟基带信号。 当无线通信设备处于第二操作模式时，第二无线电部分可操作地耦合以将出站模拟基带信号转换为第二出站RF信号并将第二入站RF信号转换为入站模拟基带信号。

公开(公告)号：US20050213690A1

公开(公告)日：2005-09-29

申请号：US10810307

申请日：2004-03-26

Applicant: Joseph Lauer ,  Alan Corry

Inventor： Joseph Lauer ,  Alan Corry

IPC: H03M13/39 ,  H03M13/41 ,  H04L25/06 ,  H04L27/06

CPC classification number: H04L25/067 ,  H03M13/3961 ,  H03M13/41 ,  H03M13/6502

Abstract: A Viterbi decoding demapping scheme for a wireless communications device processor substantially implemented on a single CMOS integrated circuit is described. By using log and antilog techniques, simplified multiplication and division operations in the branch metric calculation may be performed. A fully integrated receiver circuit with Viterbi decoder with branch metric computation consumes less circuit space and power than conventional solutions.

Abstract translation: 描述了基本上在单个CMOS集成电路上实现的用于无线通信设备处理器的维特比解码解映射方案。 通过使用log和antilog技术，可以执行分支度量计算中的简化乘法和除法运算。 具有分支度量计算的维特比解码器的完全集成的接收机电路消耗比传统解决方案更少的电路空间和功率。

公开(公告)号：US06891881B2

公开(公告)日：2005-05-10

申请号：US09825775

申请日：2001-04-04

Applicant: Jason Alexander Trachewsky ,  Eric Ojard ,  Srinivasa Garlapati ,  Alan Corry

Inventor： Jason Alexander Trachewsky ,  Eric Ojard ,  Srinivasa Garlapati ,  Alan Corry

IPC: H04J3/06 ,  H04L1/00 ,  H04L1/08 ,  H04L1/12 ,  H04L1/18 ,  H04L12/413 ,  H04M11/00 ,  H04M11/06 ,  H04L27/30

CPC classification number: H04L1/0005 ,  H04L1/0003 ,  H04L1/0006 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0061 ,  H04L1/0072 ,  H04L1/08 ,  H04L1/18 ,  H04L1/1809 ,  H04L1/1848 ,  H04L1/1877 ,  H04L1/1883 ,  H04L1/1887 ,  H04L1/20 ,  H04L12/40032 ,  H04L12/4013 ,  H04L12/40136 ,  H04L12/40156 ,  H04L12/40163 ,  H04L12/403 ,  H04L12/4035 ,  H04L12/407 ,  H04L12/413 ,  H04L12/417 ,  H04L2001/0093 ,  H04L2001/125 ,  H04M11/00 ,  H04M11/06 ,  Y02D50/10

Abstract: A method of determining an end of a transmitted frame at a receiver on a frame-based communications network. An end of frame format for the transmitted frame is provided having an end of frame plurality of symbols. A received transmitted frame is filtered using filter coefficients matched to the end of frame plurality of symbols to provide a correlation sequence low-pass filtered signal. A squared magnitude of the correlation sequence is computed. The squared magnitude of the correlation sequence is low-pass filtered to provide a low-pass filtered correlation signal. The low-pass filtered correlation signal is delayed to provide a delayed low-pass filtered correlation signal. The delayed low-pass filtered correlation signal is multiplied by a fixed predetermined threshold to provide a multiplied correlation signal. The multiplied correlation signal is compared with the low-pass filtered correlation signal to provide a match/no match comparison indicative of the possible end of a transmitted frame.

Abstract translation: 一种在基于帧的通信网络上的接收机处确定发送帧的结束的方法。 提供了用于发送帧的帧格式的结尾，其具有多个符号的帧的结尾。 使用与帧多个符号的末尾相匹配的滤波器系数对接收到的发送帧进行滤波，以提供相关序列低通滤波信号。 计算相关序列的平方幅度。 对相关序列的平方幅进行低通滤波，以提供低通滤波的相关信号。 低通滤波相关信号被延迟以提供延迟的低通滤波相关信号。 将经延迟的低通滤波相关信号乘以固定的预定阈值以提供相乘后的相关信号。 将相乘的相关信号与低通滤波的相关信号进行比较，以提供指示发送帧的可能结束的匹配/不匹配比较。

公开(公告)号：US06625459B1

公开(公告)日：2003-09-23

申请号：US09585774

申请日：2000-06-02

Applicant: Eric Ojard ,  Alan Corry

Inventor： Eric Ojard ,  Alan Corry

IPC: H04Q720

CPC classification number: H04L25/0242 ,  H04L7/041 ,  H04L25/0228

Abstract: A method and apparatus for obtaining a channel estimate and a baud frequency offset estimate for a communications channel in a communications system. The communications system has a transmitter for transmitting to a receiver over the communications channel signals representing data appended to a preamble signal. The preamble signal is provided as a periodic plurality of preamble sequences, each preamble sequence being generated in accordance with: 1 32 ⁢ ∑ 15 k = 0 ⁢ b k ⁢ b mod ⁡ ( k + n , 16 ) * = { 1 , n = 0 0 , n ≠ 0 . A signal representing the periodic plurality of preamble sequences is sent by a transmitter over the communications channel to a receiver and is received at the receiver as a received signal. The received signal is processed to determine from the received signal both a channel estimate in accordance with: h ^ = 1 64 ⁢ B H ⁢ ( y 1 + y 2 ) , wherein B represents a matrix of preamble symbol values, upsampled by four and zero-filled, and y1 and y2 are column vectors of received samples, and a baud frequency offset estimate &Dgr;fb in accordance with: S = ∑ 63 k = 0 ⁢ y k ⁢ y k + 64 * Δ ⁢   ⁢ f b ≅ real ⁡ ( S ) · f b imag ⁡ ( S ) · f c · 32 ⁢   ⁢ π , wherein fb is a baud frequency and fc is a center frequency of the transmission signal.

Abstract translation: 一种用于获得通信系统中的通信信道的信道估计和波特率频率偏移估计的方法和装置。 通信系统具有发射机，用于通过通信信道向接收机发送表示附加到前同步信号的数据的信号。 前导信号被提供为周期性多个前导码序列，每个前导码序列根据以下生成：表示周期性多个前同步码序列的信号由发射机通过通信信道发送到接收机，并且在接收机处以接收机的形式被接收 接收信号。 接收到的信号被处理以根据接收信号确定根据以下的信道估计：其中B表示由四和零填充上采样的前导码符号值的矩阵，y1和y2是接收样本的列向量， 波特率偏移估计Deltafb符合：其中fb是波特率，fc是发送信号的中心频率。

公开(公告)号：US20080118011A1

公开(公告)日：2008-05-22

申请号：US12020478

申请日：2008-01-25

Applicant: JASON TRACHEWSKY ,  ALAN CORRY

Inventor： JASON TRACHEWSKY ,  ALAN CORRY

IPC: H03D1/00

CPC classification number: H04L27/2647 ,  H04L7/041 ,  H04L7/08

Abstract: A method for accurate signal detection begins by receiving a radio frequency signal, which is then converted into baseband signals. The processing then continues by performing a normalized auto correlation on the down-converted baseband signal to produce a normalized auto correlation signal. The process continues by performing a periodic pattern detection on the down-converted baseband signal to produce a normalized detected periodic signal. The process then continues by comparing the normalized auto correlation value with an auto correlation threshold and by comparing the normalized detected periodic signal with a set of thresholds. When the normalized auto correlation value compares favorably with the auto correlation threshold and when the normalized detected periodic signal compares favorably with the set of thresholds, the down-converted baseband signal is indicated to be a valid signal.

Abstract translation: 用于准确信号检测的方法是通过接收射频信号开始的，然后将其转换为基带信号。 然后通过对下变频的基带信号执行归一化的自相关来继续处理，以产生归一化的自相关信号。 该过程通过对下变频的基带信号执行周期性模式检测以产生归一化的检测周期信号而继续。 然后，通过将归一化自相关值与自相关阈值进行比较并通过将归一化检测到的周期信号与一组阈值进行比较来继续该过程。 当归一化自相关值与自相关阈值相比较好时，并且当归一化检测到的周期信号与阈值集合相比较时，下转换的基带信号被指示为有效信号。

公开(公告)号：US07035285B2

公开(公告)日：2006-04-25

申请号：US09826239

申请日：2001-04-04

Applicant: John T. Holloway ,  Edward H. Frank ,  Eric Ojard ,  Jason Alexander Trachewsky ,  Tracy D. Mallory ,  Henry S. Ptasinski ,  Raymond Hayes ,  Kevin H. Peterson ,  Larry C. Yamano ,  Alan Corry ,  Jay Pattin

Inventor： John T. Holloway ,  Edward H. Frank ,  Eric Ojard ,  Jason Alexander Trachewsky ,  Tracy D. Mallory ,  Henry S. Ptasinski ,  Raymond Hayes ,  Kevin H. Peterson ,  Larry C. Yamano ,  Alan Corry ,  Jay Pattin

IPC: H04J3/26

CPC classification number: H04L1/0005 ,  H04L1/0003 ,  H04L1/0006 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0061 ,  H04L1/0072 ,  H04L1/08 ,  H04L1/18 ,  H04L1/1809 ,  H04L1/1848 ,  H04L1/1877 ,  H04L1/1883 ,  H04L1/1887 ,  H04L1/20 ,  H04L12/40032 ,  H04L12/4013 ,  H04L12/40136 ,  H04L12/40156 ,  H04L12/40163 ,  H04L12/403 ,  H04L12/4035 ,  H04L12/407 ,  H04L12/413 ,  H04L12/417 ,  H04L2001/0093 ,  H04L2001/125 ,  H04M11/00 ,  H04M11/06 ,  Y02D50/10

Abstract: A method and signal therfor embodied in a carrier wave for sending information from transmit stations to receive stations over a transmission medium of a frame-based communications network. The information is sent in transmit frames having a frame format comprising a fixed rate header, followed by a variable rate payload, followed by a fixed rate trailer. The fixed rate header includes a preamble. The preamble has a repetition of four symbol sequences for facilitating power estimation, gain control, baud frequency offset estimation, equalizer training, carrier sensing and collision detection. The preamble also includes a frame control field. The frame control field has scrambler control information for frame scrambling initialization, a priority field to determine the absolute priority a transmit frame will have when determining access to the transmission medium, a payload encoding field which determines constellation encoding of payload bits in the variable rate payload, and a header check sequence for providing a cyclic redundancy check. The variable rate payload is transmitted pursuant to dynamic adjustable frame encoding parameters for improving transmission performance for a transmit frame being transmitted from a transmitting station to a receiving station. The header also includes a destination address field, a source address field and an ethertype field.

公开(公告)号：US20050159114A1

公开(公告)日：2005-07-21

申请号：US10757931

申请日：2004-01-15

Applicant: Jason Trachewsky ,  Alan Corry

Inventor： Jason Trachewsky ,  Alan Corry

IPC: H04B1/02 ,  H04B1/04 ,  H04L7/04 ,  H04L7/08 ,  H04L27/06 ,  H04L27/26

CPC classification number: H04B1/0475 ,  H04L7/041 ,  H04L7/08 ,  H04L27/2647

Abstract: A radio frequency transmitter includes a digital baseband and coding module, an inverse fast Fourier transform (IFFT) module, a complex digital filter, a complex digital-to-analog converter and a radio frequency modulation module. The digital baseband and coding module is operably coupled to convert outbound data into outbound symbols in accordance with a baseband encoding protocol. The IFFT module is operably coupled to convert the outbound symbols into a complex time domain sample sequence. The complex digital filter is operably coupled to filter the complex time domain sequence such that signal strength of outbound RF signals in an exclusion RF band is at or below a specified signal strength with negligible attenuation on in-band signal strength.

Abstract translation: 射频发射机包括数字基带和编码模块，快速傅里叶逆变换（IFFT）模块，复数数字滤波器，复数数模转换器和射频调制模块。 数字基带和编码模块可操作地耦合以根据基带编码协议将出站数据转换成出站符号。 IFFT模块可操作地耦合以将出站符号转换为复杂时域采样序列。 复数字滤波器可操作地耦合以对复杂时域序列进行滤波，使得排除RF频带中的出站RF信号的信号强度处于或低于特定信号强度，并且对带内信号强度具有可忽略的衰减。