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1. 发明授权

US6052701A Methods of performing interpolation using frequency shifting operations and filters 失效
标题翻译：使用频移操作和滤波器进行插值的方法
公开(公告)号：US6052701A
公开(公告)日：2000-04-18
申请号：US200083
申请日：1998-11-25
申请人： Joshua L. Koslov , Frank A. Lane , Carl G. Scarpa
发明人： Joshua L. Koslov , Frank A. Lane , Carl G. Scarpa
IPC分类号： H03H17/00 , H04L27/20 , G06F7/17 , A04L27/20
CPC分类号： H04L27/2071
摘要： Methods and apparatus for converting a relatively low frequency signal, e.g., a 1.5 MHz signal, to a high frequency signal, e.g., a 30-100 MHz signal, in the digital domain without the need for a digital mixer operating at the high frequency are described. The high frequency represents, e.g., the ultimate digital to analog conversion frequency. In accordance with the present invention an interpolation technique is used to convert the low rate digital signal to a high rate signal and to shift the carrier to a desired frequency. This is accomplished, by first positioning the information signal, e.g., the digital waveform to be modulated on a carrier at a relatively low rate using a digital mixer operating at a fraction of the ultimate digital to analog conversion frequency. The relatively low rate signal generated by the mixing operation is then converted to a high rate signal by one or more interpolator stages. An adjustable passband filter circuit is included in each interpolation stage. In one embodiment, the adjustable passband filter circuits are implemented using a fixed frequency filter preceded and followed by frequency shifting circuits which are used to upshift and then downshift the signal being filtered. By controlling the frequency shifting adjustable filter circuits are achieved via the use of fixed filters.
摘要翻译：用于将相对低频信号（例如1.5MHz信号）转换成数字域中的高频信号（例如，30-100MHz信号）而不需要以高频工作的数字混频器的方法和装置描述。高频表示例如最终的数模转换频率。根据本发明，使用内插技术将低速率数字信号转换为高速率信号并将载波移位到期望的频率。这是通过使用以最终数模转换频率的一小部分操作的数字混频器首先定位信息信号，例如以较低速率调制在载波上的数字波形。然后由混合操作产生的相对较低的速率信号通过一个或多个内插器级转换成高速率信号。每个插补级包含可调整通带滤波电路。在一个实施例中，可调节通带滤波器电路使用在频移电路之前和之后的固定频率滤波器来实现，所述频移电路用于升档，然后降档正被滤波的信号。通过控制频移可调滤波器电路是通过使用固定滤波器实现的。

2. 发明授权

US5940450A Carrier recovery method and apparatus 失效
标题翻译：载体回收方法和装置
公开(公告)号：US5940450A
公开(公告)日：1999-08-17
申请号：US807565
申请日：1997-02-28
申请人： Joshua L. Koslov , Frank A. Lane
发明人： Joshua L. Koslov , Frank A. Lane
IPC分类号： H04L27/227 , H04L27/38 , H04L27/06
CPC分类号： H04L27/3827
摘要： Improved carrier recovery methods and apparatus suitable for use with QAM, QPSK and a wide variety of other modulation formats is described. In accordance with the invention, the phase error between received symbols, representing a frequency error, is determined using one of a plurality of techniques. The estimated frequency error is used to adjust the phase and/or frequency of a received carrier signal to achieve a frequency lock. The methods and apparatus of the present invention can be easily integrated into existing carrier recovery designs to supplement known frequency In accordance with a first embodiment of the present invention, the receipt of pairs of consecutive outer symbols is detected, a frequency error associated with each pair of consecutive symbols is generated, and the frequency error is compared to a selected threshold value to determine if it is a non-ambiguous estimate of the frequency error. If the frequency error is non-ambiguous and from a pair of consecutive outer symbols, it is used to adjust the frequency and/or phase of a received carrier signal. In the second embodiment, the receipt of pairs of consecutive outer symbols are detected. An estimate of the frequency error, determined as the phase error between received symbols, is made in the second embodiment by doing a symbol to symbol, as opposed to a symbol to target comparison.
摘要翻译：描述了适用于QAM，QPSK和各种其他调制格式的改进的载波恢复方法和装置。根据本发明，使用多种技术之一确定表示频率误差的接收符号之间的相位误差。估计的频率误差用于调整接收的载波信号的相位和/或频率以实现频率锁定。本发明的方法和装置可以容易地集成到现有的载波恢复设计中以补充已知频率。根据本发明的第一实施例，检测到连续外部符号对的接收，与每对相关联的频率误差生成连续符号，并将频率误差与选定的阈值进行比较，以确定其是否是频率误差的非模糊估计。如果频率误差是非歧义的，并且来自一对连续的外部符号，则用于调整接收的载波信号的频率和/或相位。在第二实施例中，检测到连续外部符号对的接收。在第二实施例中，通过对符号进行符号，而不是将符号与目标对比进行比较，在频率误差的估计中被确定为接收符号之间的相位误差。

3. 发明授权

US5978823A Methods and apparatus for implementing and controlling a digital modulator 失效
标题翻译：用于实现和控制数字调制器的方法和装置
公开(公告)号：US5978823A
公开(公告)日：1999-11-02
申请号：US789437
申请日：1997-01-27
申请人： Joshua L. Koslov , Frank A. Lane , Carl G. Scarpa
发明人： Joshua L. Koslov , Frank A. Lane , Carl G. Scarpa
IPC分类号： H03H17/00 , H04L27/20 , G06F17/17
CPC分类号： H04L27/2071
摘要： Methods and apparatus for converting a relatively low frequency signal, e.g., a 1.5 MHz signal, to a high frequency signal, e.g., a 30-100 MHz signal, in the digital domain without the need for a digital mixer operating at the high frequency are described. The high frequency represents, e.g., the ultimate digital to analog conversion frequency. In accordance with the present invention an interpolation technique is used to convert the low rate digital signal to a high rate signal and to shift the carrier to a desired frequency. This is accomplished, by first positioning the information signal, e.g., the digital waveform to be modulated on a carrier at a relatively low rate using a digital mixer operating at a fraction of the ultimate digital to analog conversion frequency. The relatively low rate signal generated by the mixing operation is then converted to a high rate signal by one or more interpolator stages. An adjustable passband filter circuit is included in each interpolation stage. In one embodiment, the adjustable passband filter circuits are implemented using a fixed frequency filter preceded and followed by frequency shifting circuits which are used to upshift and then downshift the signal being filtered. By controlling the frequency shifting adjustable filter circuits are achieved via the use of fixed filters. One feature of the present invention is directed to a control circuit which is response to an H bit frequency control word representing a desired output carrier frequency.
摘要翻译：用于将相对低频信号（例如1.5MHz信号）转换成数字域中的高频信号（例如，30-100MHz信号）而不需要以高频工作的数字混频器的方法和装置描述。高频表示例如最终的数模转换频率。根据本发明，使用内插技术将低速率数字信号转换为高速率信号并将载波移位到期望的频率。这是通过使用以最终数模转换频率的一小部分操作的数字混频器首先定位信息信号，例如以较低速率调制在载波上的数字波形。然后由混合操作产生的相对较低的速率信号通过一个或多个内插器级转换成高速率信号。每个插补级包含可调整通带滤波电路。在一个实施例中，可调节通带滤波器电路使用在频移电路之前和之后的固定频率滤波器来实现，所述频移电路用于升档，然后降档正被滤波的信号。通过控制频移可调滤波器电路是通过使用固定滤波器实现的。本发明的一个特征是针对表示期望输出载波频率的H位频率控制字的响应的控制电路。

4. 发明授权

US5783974A Digital interpolation up sampling circuit and digital modulator using same 失效
标题翻译：数字内插上采样电路和数字调制器使用相同
公开(公告)号：US5783974A
公开(公告)日：1998-07-21
申请号：US789439
申请日：1997-01-27
申请人： Joshua L. Koslov , Frank A. Lane , Carl G. Scarpa
发明人： Joshua L. Koslov , Frank A. Lane , Carl G. Scarpa
IPC分类号： H03H17/00 , H04L27/20 , H04L27/36
CPC分类号： H04L27/2071
摘要： Methods and apparatus for converting a relatively low frequency signal, e.g., a 1.5 MHz signal, to a high frequency signal, e.g., a 30-100 MHz signal, in the digital domain. An interpolation technique is used to convert the low rate digital signal to a high rate signal and to shift the carrier to a desired frequency. This is accomplished, by first positioning the information signal, e.g., the digital wave form to be modulated on a carrier at a relatively low rate using a digital mixer operating at a fraction of the ultimate digital to analog conversion frequency. The relatively low rate signal generated by the mixing operation is then converted to a high rate signal by one or more interpolation stages. An adjustable passband filter circuit is included in each interpolation stage for selectively filtering out the signal or images created as a result of a signal padding operation performed as part of each interpolation stage. The interpolator of the present invention can be used in a modulator to translate the output of the mixer to the modulator's ultimate carrier frequency.
摘要翻译：用于将相对低频信号（例如1.5MHz信号）转换为数字域中的高频信号（例如30-100MHz信号）的方法和装置。使用插值技术将低速率数字信号转换成高速率信号并将载波移位到期望的频率。这是通过首先使用在极限数模转换频率的一部分操作的数字混频器以相对较低的速率首先定位信息信号，例如要在载波上调制的数字波形。然后通过混合操作产生的相对较低的速率信号通过一个或多个插值级转换成高速率信号。每个插值级包括可调整的通带滤波器电路，用于选择性地滤出作为每个插值级的一部分执行的作为信号填充操作的结果所创建的信号或图像。本发明的内插器可以用在调制器中以将混频器的输出转换为调制器的最终载波频率。

5. 发明授权

US5673293A Method and apparatus for demodulating QAM and VSB signals 失效
标题翻译：用于解调QAM和VSB信号的方法和装置
公开(公告)号：US5673293A
公开(公告)日：1997-09-30
申请号：US303307
申请日：1994-09-08
申请人： Carl G. Scarpa , Joshua L. Koslov , Frank A. Lane
发明人： Carl G. Scarpa , Joshua L. Koslov , Frank A. Lane
IPC分类号： H03D1/22 , H03J7/04 , H04L27/06 , H04L27/38 , H03C1/52
CPC分类号： H03D1/22 , H03J7/04 , H04L27/06 , H04L27/3854
摘要： Method and apparatus for providing a QAM, a VSB, and a joint QAM/VSB demodulator are described. The describe demodulators are designed to minimize the amount of duplicated circuitry required to implement a joint QAM/VSB demodulator capable of performing the functions of the disclosed individual QAM and VSB demodulators. All digital architectures are used for each of the described demodulators to facilitate their combination into the described joint VSB/QAM demodulator. The described demodulators are suitable for demodulating, e.g, advanced or high definition television signals modulated using QAM or VSB modulation techniques.
摘要翻译：描述了提供QAM，VSB和联合QAM / VSB解调器的方法和装置。所描述的解调器被设计为最小化实现能够执行所公开的各个QAM和VSB解调器的功能的联合QAM / VSB解调器所需的复制电路的数量。所有数字架构都用于所描述的解调器中的每一个，以便于它们组合到描述的联合VSB / QAM解调器中。所描述的解调器适用于解调，例如使用QAM或VSB调制技术调制的高级或高清晰度电视信号。

6. 发明授权

US5648923A Nyquist filter for use in a joint VSB/QAM demodulator 失效
标题翻译：用于联合VSB / QAM解调器的奈奎斯特滤波器
公开(公告)号：US5648923A
公开(公告)日：1997-07-15
申请号：US397441
申请日：1995-03-02
申请人： Frank A. Lane , Joshua L. Koslov
发明人： Frank A. Lane , Joshua L. Koslov
IPC分类号： H03H17/06 , G06F17/10
CPC分类号： H03H17/06
摘要： A Nyquist filter implemented as a FIR filter comprising a series of N filter cells, where N is an integer is disclosed. The Nyquist filter is especially well suited for use in demodulators capable of demodulating both VSB and QAM signals. During VSB mode operation, each filter cell acts as a single tap of an N tap Nyquist filter. During QAM mode operation, an additional unit delay element, not used during VSB mode operation, is inserted into the signal path of each cell of the Nyquist filter. The introduction of this second unit delay element into the signal path of each filter cell effectively serves to convert each filter cell into two filter taps with the coefficient of the second filter tap being zero. Thus, during QAM mode operation, the Nyquist filter of the present invention operates as a 2N-tap FIR filter which has coefficients of zero for half of the 2N taps.
摘要翻译：公开了一种实现为FIR滤波器的奈奎斯特滤波器，其包括一系列N个滤波器单元，其中N是整数。奈奎斯特滤波器特别适用于能解调VSB和QAM信号的解调器。在VSB模式操作期间，每个滤波器单元充当N抽头奈奎斯特滤波器的单抽头。在QAM模式操作期间，将在VSB模式操作期间未使用的附加单元延迟元件插入到奈奎斯特滤波器的每个单元的信号路径中。将该第二单元延迟元件引入每个滤波器单元的信号路径中有效地用于将每个滤波器单元转换成两个滤波器抽头，其中第二滤波器滤波器的系数为零。因此，在QAM模式操作期间，本发明的奈奎斯特滤波器作为2N抽头FIR滤波器工作，2N滤波器的一半具有零系数。

7. 发明授权

US5978420A Methods and apparatus for implementing a digital modulator 失效
标题翻译：用于实现数字调制器的方法和装置
公开(公告)号：US5978420A
公开(公告)日：1999-11-02
申请号：US200084
申请日：1998-11-25
申请人： Joshua L. Koslov , Frank A. Lane , Carl G. Scarpa
发明人： Joshua L. Koslov , Frank A. Lane , Carl G. Scarpa
IPC分类号： H03H17/00 , H04L27/20
CPC分类号： H04L27/2071
摘要： In accordance with the present invention an interpolation technique is used to convert a low rate digital signal to a high rate signal and to shift the carrier to a desired frequency. This is accomplished, by first positioning the information signal, e.g., the digital waveform to be modulated on a carrier at a relatively low rate using a digital mixer operating at a fraction of the ultimate digital to analog conversion frequency. The relatively low rate signal generated by the mixing operation is then converted to a high rate signal by one or more interpolator stages. An adjustable passband filter circuit is included in each interpolation stage. One feature of the present invention is directed to a control circuit which is response to an H bit frequency control word representing a desired output carrier frequency. The control circuit generates individual filter control signals for each adjustable filter circuit from the single H bit frequency control word. An oscillator control circuit which is responsive to a portion of the H bit frequency control word is also described.
摘要翻译：根据本发明，内插技术用于将低速率数字信号转换成高速率信号并将载波移位到期望的频率。这是通过使用以最终数模转换频率的一小部分操作的数字混频器首先定位信息信号，例如以较低速率调制在载波上的数字波形。然后由混合操作产生的相对较低的速率信号通过一个或多个内插器级转换成高速率信号。每个插补级包含可调整通带滤波电路。本发明的一个特征是针对表示期望输出载波频率的H位频率控制字的响应的控制电路。控制电路从单个H位频率控制字为每个可调滤波器电路生成各个滤波器控制信号。还描述了响应于H位频率控制字的一部分的振荡器控制电路。

8. 发明授权

US09485695B2 Methods and apparatus for performing handoffs in a multi-carrier wireless communications systems 有权
标题翻译：在多载波无线通信系统中进行切换的方法和装置
公开(公告)号：US09485695B2
公开(公告)日：2016-11-01
申请号：US11681522
申请日：2007-03-02
申请人： Rajiv Laroia , Junyi Li , Frank A. Lane
发明人： Rajiv Laroia , Junyi Li , Frank A. Lane
IPC分类号： H04W36/00 , H04W36/06 , H04W36/18
CPC分类号： H04W36/06 , H04W36/18
摘要： A mobile communications device initiates a handoff from its current base station (BS) sector network attachment point to a new BS sector. The mobile sends a handoff request over its current wireless link to the current BS sector, which forwards the request to the new BS sector. The new BS sector processes the request assigning dedicated resources. Information identifying the allocated resources is conveyed from the new BS sector via the current BS sector to the mobile. The mobile determines the time of the allocated dedicated segments based upon a received beacon signal from the new BS sector with known timing relationships to dedicated segments. The mobile breaks the original wireless link just prior to the time of the first assigned dedicated segment. The mobile communicates information on the assigned dedicated segments to perform registration operations establishing a new wireless link.
摘要翻译：移动通信设备发起从其当前基站（BS）扇区网络连接点到新的BS扇区的切换。移动台通过其当前的无线链路向当前的BS扇区发送切换请求，该BS扇区将请求转发到新的BS扇区。新的BS部门处理请求分配专用资源。识别分配的资源的信息从新的BS扇区通过当前BS扇区传送到移动台。移动台基于来自新BS扇区的接收到的信标信号确定所分配的专用段的时间，具有与专用段的已知定时关系。移动台在第一个分配的专用段之前就打破原始的无线链路。移动台在分配的专用段上传送信息以执行建立新的无线链路的注册操作。

9. 发明授权

US08879520B2 Wireless communication methods and apparatus supporting wireless terminal mode control signaling 有权
标题翻译：支持无线终端模式控制信令的无线通信方法和装置
公开(公告)号：US08879520B2
公开(公告)日：2014-11-04
申请号：US11621990
申请日：2007-01-10
申请人： Rajiv Laroia , Frank A. Lane , Junyi Li , Tom Richardson
发明人： Rajiv Laroia , Frank A. Lane , Junyi Li , Tom Richardson
IPC分类号： H04W4/00
CPC分类号： H04W40/244 , H04J3/0602 , H04L5/0016 , H04L5/0035 , H04L5/0048 , H04L27/2601 , H04L27/261 , H04W8/005 , H04W16/14 , H04W28/04 , H04W28/18 , H04W36/16 , H04W36/24 , H04W40/24 , H04W48/08 , H04W48/16 , H04W48/20 , H04W52/0229 , H04W52/04 , H04W72/02 , H04W76/14 , H04W84/042 , H04W84/18 , H04W88/02 , H04W88/04 , H04W88/06 , H04W88/10 , Y02D70/1222 , Y02D70/1224 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/162 , Y02D70/164 , Y02D70/168 , Y02D70/22 , Y02D70/23
摘要： A wireless terminal determines a desired mode of base station operation with regard to whether the base station is to function as a network access node or is to function in a peer to peer mode with regard to a frequency band, and communicates a change signal to the base station. Some change signals are request signals requesting a base station to dynamically reallocate spectrum usage, while other change signals are command signals ordering the base station to reallocate spectrum usage. Information indicating a level of authority corresponding to the change signals, in some embodiments, corresponds to one of a device identifier, a user identifier, and a priority level indicator. An exemplary command signal comes from a device used by a government agent with the authority to override spectrum usage.
摘要翻译：无线终端关于基站是否用作网络接入节点或者相对于频带在对等模式中起作用，确定基站操作的期望模式，并且将改变信号传送到基站。一些改变信号是请求信号来请求基站动态地重新分配频谱使用，而其它改变信号是命令信号来排序基站来重新分配频谱使用。在一些实施例中，指示对应于改变信号的权限级别的信息对应于设备标识符，用户标识符和优先级指示符之一。示例性命令信号来自政府代理使用的设备，其具有超越频谱使用的权限。

10. 发明授权

US08774846B2 Methods and apparatus relating to wireless terminal beacon signal generation, transmission, and/or use 有权
标题翻译：与无线终端信标信号生成，传输和/或使用有关的方法和装置
公开(公告)号：US08774846B2
公开(公告)日：2014-07-08
申请号：US11621955
申请日：2007-01-10
申请人： Rajiv Laroia , Sundeep Rangan , Arnab Das , Frank A. Lane , Junyi Li
发明人： Rajiv Laroia , Sundeep Rangan , Arnab Das , Frank A. Lane , Junyi Li
IPC分类号： H04B7/00 , H04W36/00
CPC分类号： H04W40/244 , H04J3/0602 , H04L5/0016 , H04L5/0035 , H04L5/0048 , H04L27/2601 , H04L27/261 , H04W8/005 , H04W16/14 , H04W28/04 , H04W28/18 , H04W36/16 , H04W36/24 , H04W40/24 , H04W48/08 , H04W48/16 , H04W48/20 , H04W52/0229 , H04W52/04 , H04W72/02 , H04W76/14 , H04W84/042 , H04W84/18 , H04W88/02 , H04W88/04 , H04W88/06 , H04W88/10 , Y02D70/1222 , Y02D70/1224 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/162 , Y02D70/164 , Y02D70/168 , Y02D70/22 , Y02D70/23
摘要： A portable wireless terminal generates and transmits a beacon signal. The beacon signal includes a sequence of beacon signal bursts, each beacon signal burst including one or more beacon symbols. A beacon symbol is transmitted using the air link resources of a beacon symbol transmission unit at a relatively high transmission power level with respect to user data symbols transmitted from the same wireless terminal, thus facilitating easy detection by other wireless terminals. The beacon symbols of the beacon signal occupy a small fraction of the total available air link resources. Beacon signals can, and sometimes do, convey wireless terminal identification information, via the location of the beacon symbols within the portion of the air link resource reserved for beacon symbol transmission units.
摘要翻译：便携式无线终端生成并发送信标信号。信标信号包括信标信号脉冲序列，每个信标信号脉冲串包括一个或多个信标符号。相对于从同一无线终端发送的用户数据符号，以相对高的发送功率电平的信标符号发送单元的空中链路资源发送信标符号，便于其他无线终端的容易检测。信标信号的信标符号占据总可用空中链路资源的一小部分。信标信号可以并且有时可以通过为为信标符号传输单元预留的空中链路资源的部分内的信标符号的位置传送无线终端识别信息。

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