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1. 发明授权

US08050359B2 Continuously variable phase frequency shift keying 有权
标题翻译：连续变频相移键控
公开(公告)号：US08050359B2
公开(公告)日：2011-11-01
申请号：US11734415
申请日：2007-04-12
申请人： William N. Furman , John W. Nieto
发明人： William N. Furman , John W. Nieto
IPC分类号： H03K7/06
CPC分类号： H03C3/00 , H04L27/12 , H04L27/122
摘要： Method for modulating an RF signal includes the steps of modulating an RF signal using frequency shift keying (FSK) modulation to define a plurality of symbols (2030, 2031). The FSK modulation includes transitioning the modulated signal (204) between at least two different frequencies (f1 and f0) during a guard period (210). The method includes the further step of varying a frequency of the modulated signal 204 during the guard period (210) in accordance with a predetermined rate of change. The predetermined rate of change is selected to minimize a bandwidth of the RF signal.
摘要翻译：用于调制RF信号的方法包括以下步骤：使用频移键控（FSK）调制来调制RF信号以定义多个符号（2030,2031）。 FSK调制包括在保护周期（210）期间在至少两个不同频率（f1和f0）之间转换调制信号（204）。该方法还包括根据预定的变化率在保护周期（210）期间改变调制信号204的频率的步骤。选择预定变化率以最小化RF信号的带宽。

2. 发明授权

US07903756B2 System and method for communicating data using waveform with extended preamble 有权
标题翻译：使用具有扩展前导码的波形传送数据的系统和方法
公开(公告)号：US07903756B2
公开(公告)日：2011-03-08
申请号：US11876053
申请日：2007-10-22
申请人： William N. Furman , John W. Nieto
发明人： William N. Furman , John W. Nieto
IPC分类号： H04L27/00
CPC分类号： H04L1/0083 , H04L1/0059
摘要： A system communicates data and includes an encoder for encoding communications data. A modulator maps the communications data based on a specific mapping algorithm to form a communications signal over which the communications data can be transmitted. The communications signal includes a preamble that has set-up or transmission parameters used for acquiring the signal at a modem and at least one extended preamble for conveying additional set-up or transmission parameters. This extended preamble includes N extended preamble bits having at least one of information, transmission parameter and control bits and M map bits that identify a predetermined mapping for the N extended preamble bits.
摘要翻译：系统通信数据并包括用于对通信数据进行编码的编码器。调制器基于特定的映射算法映射通信数据，以形成通信信号，通信信号可以通过该信号发送通信数据。通信信号包括具有用于在调制解调器处获取信号的建立或传输参数的前导码和用于传送附加设置或传输参数的至少一个扩展前同步码。该扩展前导码包括具有信息，传输参数和控制位以及标识N个扩展前同步码位的预定映射的M映射位中的至少一个的N个扩展前导码位。

3. 发明授权

US07865808B2 Fast error detection system and related methods 有权
标题翻译：快速检错系统及相关方法
公开(公告)号：US07865808B2
公开(公告)日：2011-01-04
申请号：US11746091
申请日：2007-05-09
申请人： William N. Furman , John W. Nieto
发明人： William N. Furman , John W. Nieto
IPC分类号： H03M13/00
CPC分类号： H03M13/09
摘要： A system apparatus and method generates a communications signal having an error detection mechanism. A circuit generates a data packet. An encoder multiplies and accumulates data words with values in a distance table containing non-repeated n-bit multipliers having “m” number of one bits that are set to obtain accumulated sum bits and appends the accumulated sum bits to the data packet as an error detection code to form a communications signal to be transmitted.
摘要翻译：系统装置和方法生成具有错误检测机构的通信信号。电路产生数据包。编码器乘以并累加具有包含具有“m”个1比特的非重复n比特乘法器的距离表中的值的数据字，其被设置为获得累加和比特并将累加的和比特附加到数据分组作为错误检测码，以形成要发送的通信信号。

4. 发明申请

US20090098828A1 COMMUNICATIONS SYSTEM USING ADAPTIVE FILTER THAT IS SELECTED BASED ON OUTPUT POWER 有权
标题翻译：使用基于输出功率选择的自适应滤波器的通信系统
公开(公告)号：US20090098828A1
公开(公告)日：2009-04-16
申请号：US11871184
申请日：2007-10-12
申请人： William N. Furman , John W. Nieto , Fred C. Kellerman , Brian C. Padalino
发明人： William N. Furman , John W. Nieto , Fred C. Kellerman , Brian C. Padalino
IPC分类号： H03H7/30 , H04B1/10
CPC分类号： H04B1/1027 , H04L25/03038
摘要： A communications system receives a modulated signal that carries encoded communications data. An adaptive filter has an input, a plurality of non-adaptive and adaptive filter taps with weighted coefficients, and an output. The received signal is passed through the adaptive filter and around adaptive filter and a switch selects which signal to pass to demodulator based on measured output power of the adaptive filter and of the original received signal. A demodulator and decoder receive the filtered output signal and demodulate and decode the signal to obtain the communications data.
摘要翻译：通信系统接收携带编码通信数据的调制信号。自适应滤波器具有输入，具有加权系数的多个非自适应和自适应滤波器抽头以及输出。接收的信号通过自适应滤波器并在自适应滤波器周围，开关根据自适应滤波器的测量输出功率和原始接收信号选择哪个信号传递给解调器。解调器和解码器接收滤波后的输出信号并对信号进行解调和解码以获得通信数据。

5. 发明授权

US08098708B2 System and method for communicating data using constant envelope orthogonal Walsh modulation with channelization 有权
标题翻译：使用具有信道化的恒包络正交沃尔什调制来传送数据的系统和方法
公开(公告)号：US08098708B2
公开(公告)日：2012-01-17
申请号：US12175527
申请日：2008-07-18
申请人： John W. Nieto , William N. Furman
发明人： John W. Nieto , William N. Furman
IPC分类号： H04B1/00
CPC分类号： H04L27/2614 , H04J13/0048
摘要： A radio device includes a transmitter having a modulator for generating M-PAM communications symbols containing communications data. A Fast Walsh Transform circuit orthogonally encodes and band-spreads a communications symbol using the Fast Walsh Transform. A frequency modulation circuit frequency modulates the communications symbols wherein a constant envelope orthogonal Walsh modulated communications signal is generated having a plurality of orthogonal waveforms each forming a separate Walsh communications channel.
摘要翻译：无线电设备包括具有用于产生包含通信数据的M-PAM通信符号的调制器的发射机。快速沃尔什变换电路使用快速沃尔什变换对通信符号进行正交编码和带通扩频。频率调制电路对通信符号进行频率调制，其中产生具有多个正交波形的恒包络正交沃尔什调制通信信号，每个正交波形形成单独的沃尔什通信信道。

6. 发明授权

US08059767B2 Communications device and related method that detects symbol timing 有权
标题翻译：检测符号定时的通信设备及相关方法
公开(公告)号：US08059767B2
公开(公告)日：2011-11-15
申请号：US11954314
申请日：2007-12-12
申请人： William N. Furman , John W. Nieto , William L. Tyler
发明人： William N. Furman , John W. Nieto , William L. Tyler
IPC分类号： H04L27/06
CPC分类号： H04L27/227 , H04L7/042 , H04L2027/0036 , H04L2027/0046 , H04L2027/0067 , H04L2027/0095
摘要： A communications device includes a signal input for receiving signals such as a binary phase shift keyed (BPSK) communications signal having a repeated preamble bit or symbol pattern. A modem processes the communications signal and includes a demodulator and processor that generates an initial frequency offset estimate and phase error estimate by processing such as with a Fast Fourier Transform (FFT), that detects the repeated preamble pattern for a block of samples within the communications signal, correlates two halves of the block of samples with a plurality of different shifted sequences and determines a maximum correlation value for the shifted sequence that provides the maximum correlation value to establish a symbol timing estimate based on the known timing alignment of this shifted sequence. Radio circuitry is operative with the modem for processing communications data obtained from the communications signal.
摘要翻译：通信设备包括用于接收诸如具有重复的前导码位或符号图案的二进制相移键控（BPSK）通信信号的信号的信号输入。调制解调器处理通信信号并且包括解调器和处理器，其通过诸如用快速傅立叶变换（FFT）的处理来生成初始频率偏移估计和相位误差估计，所述快速傅里叶变换（FFT）检测通信内的样本块的重复前导码模式信号将样本块的两半与多个不同的移位序列相关联，并且确定提供最大相关值的偏移序列的最大相关值，以便基于该偏移序列的已知定时对准来建立符号定时估计。无线电电路与调制解调器一起操作，用于处理从通信信号获得的通信数据。

7. 发明授权

US07693239B2 Apparatus for decoding convolutional codes and associated method 有权
标题翻译：用于解码卷积码和相关方法的装置
公开(公告)号：US07693239B2
公开(公告)日：2010-04-06
申请号：US11349597
申请日：2006-02-08
申请人： William N. Furman , John W. Nieto
发明人： William N. Furman , John W. Nieto
IPC分类号： H04L27/06
CPC分类号： H04L1/0054 , H04L1/0036 , H04L1/0059
摘要： A decoding device may include a sequential convolutional code decoder, and a parallel convolutional code decoder. The decoding device may further include a controller for selectively processing a convolutionally encoded input signal via at least one of the sequential convolutional code decoder and the parallel convolutional code decoder. The selection of decoder may be based upon a signal-to-noise ratio or the passage of time, for example.
摘要翻译：解码装置可以包括顺序卷积码解码器和并行卷积码解码器。解码装置还可以包括控制器，用于通过顺序卷积码解码器和并行卷积码解码器中的至少一个选择性地处理卷积编码的输入信号。解码器的选择可以基于例如信噪比或时间的流逝。

8. 发明申请

US20100067634A1 COMMUNICATIONS DEVICE USING MEASURED FREQUENCY OFFSET OVER TIME TO ADJUST PHASE AND FREQUENCY TRACKING 有权
标题翻译：使用测量频率偏移的通信设备调整相位和频率跟踪
公开(公告)号：US20100067634A1
公开(公告)日：2010-03-18
申请号：US12212020
申请日：2008-09-17
申请人： William N. Furman , John W. Nieto , William L. Tyler
发明人： William N. Furman , John W. Nieto , William L. Tyler
IPC分类号： H04B17/00 , H03D3/24
CPC分类号： H04L7/0337 , H03L7/0807 , H03L7/1075
摘要： The communications device includes a phase and frequency tracking loop having a signal input and an adjustable loop filter that establishes a predetermined tracking loop bandwidth for samples of communication signals received at the signal input and processed within the tracking loop. A tracking loop update circuit updates loop filter operating parameters and is operative with the loop filter for increasing or decreasing the tracking loop bandwidth of the phase and frequency tracking loop based on the dynamics of the frequency offset of measured samples from the output of the loop filter over time.
摘要翻译：通信设备包括相位和频率跟踪环路，其具有信号输入端和可调节环路滤波器，该可调环路滤波器为在信号输入端接收并在跟踪环路内处理的通信信号的样本建立预定的跟踪环路带宽。跟踪环路更新电路更新环路滤波器操作参数，并且与环路滤波器一起工作，以便基于来自环路滤波器的输出的测量样本的频率偏移的动态来增加或减少相位和频率跟踪环路的跟踪环路带宽随着时间的推移。

9. 发明授权

US07627803B2 System and method for variable forward error correction (FEC) protection 有权
标题翻译：用于可变前向纠错（FEC）保护的系统和方法
公开(公告)号：US07627803B2
公开(公告)日：2009-12-01
申请号：US11428689
申请日：2006-07-05
申请人： John W. Nieto , William N. Furman
发明人： John W. Nieto , William N. Furman
IPC分类号： H03M13/00
CPC分类号： H04L1/0072 , H04L1/0059 , H04L1/0068 , H04L1/007 , H04L1/0071 , H04L2001/0098
摘要： A communications system includes a transmitter having an encoder for encoding communications data and varying at least one of a puncturing of the code rate and a repetition rate on different portions of the communications data. As a result, a variable forward error correction is added to different portions of the communications data.
摘要翻译：通信系统包括具有编码器的发射机，用于对通信数据进行编码，并且改变通信数据的不同部分上的码率的删截和重复率中的至少一个。结果，向通信数据的不同部分添加了可变前向纠错。

10. 发明申请

US20090102687A1 SYSTEM AND METHOD FOR COMMUNICATING DATA USING WAVEFORM WITH EXTENDED PREAMBLE 有权
标题翻译：使用波形与扩展前缀通信数据的系统和方法
公开(公告)号：US20090102687A1
公开(公告)日：2009-04-23
申请号：US11876053
申请日：2007-10-22
申请人： William N. Furman , John W. Nieto
发明人： William N. Furman , John W. Nieto
IPC分类号： H03M7/00
CPC分类号： H04L1/0083 , H04L1/0059
摘要： A system communicates data and includes an encoder for encoding communications data. A modulator maps the communications data based on a specific mapping algorithm to form a communications signal over which the communications data can be transmitted. The communications signal includes a preamble that has set-up or transmission parameters used for acquiring the signal at a modem and at least one extended preamble for conveying additional set-up or transmission parameters. This extended preamble includes N extended preamble bits having at least one of information, transmission parameter and control bits and M map bits that identify a predetermined mapping for the N extended preamble bits.
摘要翻译：系统通信数据并包括用于对通信数据进行编码的编码器。调制器基于特定的映射算法映射通信数据，以形成通信信号，通信信号可以通过该信号发送通信数据。通信信号包括具有用于在调制解调器处获取信号的建立或传输参数的前导码和用于传送附加设置或传输参数的至少一个扩展前同步码。该扩展前导码包括具有信息，传输参数和控制位以及标识N个扩展前同步码位的预定映射的M映射位中的至少一个的N个扩展前导码位。

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