公开(公告)号：US20090097592A1

公开(公告)日：2009-04-16

申请号：US12079782

申请日：2008-03-28

Applicant: Carl Scarpa ,  Edward Schell

Inventor： Carl Scarpa ,  Edward Schell

IPC: H04L27/22

CPC classification number: H04L27/2271 ,  H04L27/183

Abstract: Systems and methods for removing phase shifts due to hierarchical modulation to improve synchronization and performance in legacy and hierarchical decoders are presented. In exemplary embodiments of the present invention, methods of compensating for the effects of hierarchical modulation can, for example, comprise receiving an I,Q symbol that has been further modulated by an overlay phase shift, detecting the direction of the overlay phase shift, de-rotating the symbol by a defined angle corresponding to the overlay phase shift and said direction; and passing the symbol to legacy synchronization and forward error correction decoding stages after said de-rotating. An exemplary receiver can be provided to implement the disclosed methods. Exemplary embodiments of the present invention provide the simplest solution to compensating for overlay modulation without requiring modification of any proven algorithms within legacy demodulator designs. The methods of exemplary embodiments of the present invention allow for essentially any offset angle used in an overlay modulation scheme to have minimal effect on signal acquisition and performance. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

Abstract translation: 提出了用于消除由分级调制引起的相移以改善传统和分层解码器中的同步和性能的系统和方法。 在本发明的示例性实施例中，补偿分级调制的影响的方法可以例如包括接收已经被覆盖相移进一步调制的I，Q符号，检测覆盖相移的方向，de 将符号旋转与覆盖相移和所述方向对应的限定角度; 并且在所述去旋转之后将符号传递到传统同步和前向纠错解码阶段。 可以提供示例性接收机来实现所公开的方法。 本发明的示例性实施例提供了用于补偿覆盖调制的最简单的解决方案，而不需要修改传统解调器设计中的任何已验证的算法。 本发明的示例性实施例的方法允许在覆盖调制方案中使用的基本上任何偏移角对信号采集和性能具有最小的影响。 要强调的是，该摘要被提供以符合要求摘要的规则，这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。

公开(公告)号：US20080089452A1

公开(公告)日：2008-04-17

申请号：US11839202

申请日：2007-08-15

Applicant: John Henderson ,  Carl Scarpa

Inventor： John Henderson ,  Carl Scarpa

IPC: H01Q3/00 ,  H01Q3/24 ,  H03D1/04

CPC classification number: H01Q1/007 ,  H01Q1/24 ,  H01Q3/2611 ,  H01Q7/005

Abstract: Antennas with steerable antenna patterns and techniques for using such antennas are described. In accordance with the invention, antenna patterns with one or more NULLs are used. Through the use of digital control signals the antenna pattern is steered so that a source of signal interference, e.g., a multipath signal, will be located in a NULL. In this manner the received signal's S/N ratio can be maximized thereby facilitating demodulation. The techniques of the invention can be applied to television, computer devices, mobile devices and a wide range of other systems. Digital commands to control an antenna may include multiple information fields, e.g., a direction field, a channel field, a gain field and a polarity field. Antennas incapable of supporting the specified fields disregard information in fields which are not supported. Information in each supported field is decoded and used to adjust the corresponding antenna characteristic.

Abstract translation: 描述了具有可控天线方向图和使用这种天线的技术的天线。 根据本发明，使用具有一个或多个NULL的天线方向图。 通过使用数字控制信号，导航天线方向图，使得诸如多路径信号的信号干扰源将位于空值中。 以这种方式，可以使接收信号的S / N比最大化，从而便于解调。 本发明的技术可以应用于电视，计算机设备，移动设备以及各种其它系统。 用于控制天线的数字命令可以包括多个信息字段，例如方向字段，信道字段，增益字段和极性字段。 无法支持指定字段的天线无视不支持的字段中的信息。 每个支持的字段中的信息被解码并用于调整相应的天线特性。

公开(公告)号：US09036720B2

公开(公告)日：2015-05-19

申请号：US12426928

申请日：2009-04-20

Applicant: Carl Scarpa ,  Edward Schell

Inventor： Carl Scarpa ,  Edward Schell

IPC: H04K1/10 ,  H04L27/28 ,  H04L27/34 ,  H04L27/00 ,  H04L27/26

CPC classification number: H04L27/3488 ,  H04L27/0008 ,  H04L27/2601

Abstract: Systems and methods for transmitting and receiving additional data, such as video data, over legacy satellite digital audio radio signals are provided. In exemplary embodiments, hierarchical modulation can be used to transmit secondary information over a legacy signal. For example, the Sirius Satellite Digital Audio Radio Service (“SDARS”) system may use a second layer of modulation to transmit video data on top of its regular audio signal. In order to support such future services within the original system design, sometimes referred to herein as a “legacy” system, additional information bandwidth can be acquired, for example, by using hierarchical modulation to overlay data for such new services on top of the legacy transmission. In such a system, for example, overlay data can be transmitted by applying a programmable angular offset to legacy QPSK symbols, for forming a new constellation similar to 8PSK.

Abstract translation: 提供了用于发送和接收传统卫星数字音频无线电信号等附加数据（如视频数据）的系统和方法。 在示例性实施例中，层次调制可用于通过遗留信号传送次级信息。 例如，Sirius卫星数字音频无线电服务（“SDARS”）系统可以使用第二层调制来在其常规音频信号之上传输视频数据。 为了在原始系统设计中支持这种未来的服务，有时在本文中被称为“传统”系统，可以例如通过使用分级调制来覆盖在传统上的这些新服务之上的数据的附加信息带宽 传输。 在这样的系统中，例如，可以通过将可编程角度偏移应用于传统QPSK符号来发送覆盖数据，以形成类似于8PSK的新星座。

公开(公告)号：US08650450B2

公开(公告)日：2014-02-11

申请号：US12221363

申请日：2008-08-01

Applicant: Carl Scarpa ,  Edward Schell

Inventor： Carl Scarpa ,  Edward Schell

IPC: G06F11/00

CPC classification number: H03M13/1105 ,  H03M13/1102 ,  H03M13/2732 ,  H03M13/2746 ,  H03M13/2771 ,  H03M13/2792 ,  H04B7/1858 ,  H04L1/0057 ,  H04L1/0071

Abstract: Systems, methods and apparatus are described to interleave LDPC coded data for reception over a mobile communications channel, such as, for example, a satellite channel. In exemplary embodiments of the present invention, a method for channel interleaving includes segmenting a large LDPC code block into smaller codewords, randomly shuffling the code segments of each codeword and then convolutionally interleaving the randomly shuffled code words. In exemplary embodiments of the present invention, such random shuffling can guarantee that no two consecutive input code segments will be closer than a defined minimum number of code segments at the output of the shuffler. In exemplary embodiments of the present invention, by keeping data in, for example, manageable sub-sections, accurate SNR estimations, which are needed for the best possible LDPC decoding performance, can be facilitated based on, for example, iterative bit decisions.

Abstract translation: 描述了系统，方法和装置来交织用于通过诸如卫星信道的移动通信信道进行接收的LDPC编码数据。 在本发明的示例性实施例中，一种用于信道交织的方法包括将大型LDPC码块分割成较小的码字，随机混洗每个码字的码片段，然后对随机混洗码字进行卷积交织。 在本发明的示例性实施例中，这种随机混洗可以保证在洗牌器的输出处没有两个连续的输入代码段将比规定的最小数量的代码段更接近。 在本发明的示例性实施例中，通过将数据保存在例如可管理子部分中，可以基于例如迭代比特决定来促进针对最佳LDPC解码性能所需的精确SNR估计。

公开(公告)号：US08630578B2

公开(公告)日：2014-01-14

申请号：US13539948

申请日：2012-07-02

Applicant: Carl Scarpa ,  Edward Schell

Inventor： Carl Scarpa ,  Edward Schell

IPC: H04H20/74 ,  H04K3/00

CPC classification number: H04B7/18513

Abstract: Methods and apparatus are presented to allow one receiver architecture to be used for the reception of two different SDARS signals. Common receiver functions can be utilized to process each signal, thereby obviating the need to duplicate hardware elements. For example, it can be assumed that both signals will not be received at the same time, thus allowing for considerable hardware reuse and lowering the cost of an interoperable receiver.

Abstract translation: 提出了方法和装置，以允许一个接收器架构用于接收两个不同的SDARS信号。 可以使用公共接收机功能来处理每个信号，从而避免复制硬件元件的需要。 例如，可以假设两个信号不会同时被接收，从而允许相当大的硬件重用并降低可互操作的接收机的成本。

公开(公告)号：US08457037B2

公开(公告)日：2013-06-04

申请号：US12497339

申请日：2009-07-02

Applicant: Carl Scarpa

Inventor： Carl Scarpa

IPC: H04B7/185

CPC classification number: H04L27/22 ,  H04B1/1027 ,  H04L27/3466

Abstract: Degree of hierarchical modulation can be varied as a function of satellite position, where such hierarchical modulation can be a combination of phase and amplitude shifts. As each satellite in a multiple satellite system moves towards a D-node or an A-node position, the offset angle of a phase-based hierarchical modulation scheme can be varied. Starting with the lowest satellite position in the sky an offset angle for overlay bits can progressively increase as the position of the satellite in the sky increases. At a satellite's highest point in the sky, the overlay offset angle can be at its maximum. The value of a varying overlay offset angle (for each satellite) can be embedded in an Overlay Identification Marker (OIM) in the broadcast. The receiver can then appropriately correct MRC weightings (weighting more heavily the (higher lying) satellite).

公开(公告)号：US20130059525A1

公开(公告)日：2013-03-07

申请号：US13539948

申请日：2012-07-02

Applicant: Carl Scarpa ,  Edward Schell

Inventor： Carl Scarpa ,  Edward Schell

IPC: H04H20/74

CPC classification number: H04B7/18513

Abstract: Methods and apparatus are presented to allow one receiver architecture to be used for the reception of two different SDARS signals. Common receiver functions can be utilized to process each signal, thereby obviating the need to duplicate hardware elements. For example, it can be assumed that both signals will not be received at the same time, thus allowing for considerable hardware reuse and lowering the cost of an interoperable receiver.

Abstract translation: 提出了方法和装置，以允许一个接收器架构用于接收两个不同的SDARS信号。 可以使用公共接收机功能来处理每个信号，从而避免复制硬件元件的需要。 例如，可以假设两个信号不会同时被接收，从而允许相当大的硬件重用并降低可互操作的接收机的成本。

公开(公告)号：US08260192B2

公开(公告)日：2012-09-04

申请号：US12080135

申请日：2008-03-31

Applicant: Carl Scarpa ,  Edward Schell

Inventor： Carl Scarpa ,  Edward Schell

IPC: H04H20/74 ,  H04K3/00

CPC classification number: H04B7/18513

Abstract: Methods and apparatus are presented to allow one receiver architecture to be used for the reception of two different SDARS signals, such as, for example, one signal from XM Satellite Radio, the other signal from Sirius Satellite Radio. The methods and apparatus presented utilize common receiver functions to process each signal, thereby obviating the need to duplicate hardware elements. In exemplary embodiments of the present invention, it can be assumed that both signals will not be received at the same time, thus allowing for considerable hardware reuse and lowering the cost of an interoperable receiver. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

Abstract translation: 提出了一种方法和装置，以允许一个接收器架构用于接收两个不同的SDARS信号，例如来自XMS卫星无线电的一个信号，来自Sirius卫星广播的另一个信号。 所提出的方法和装置利用公共接收机功能来处理每个信号，从而避免复制硬件元件的需要。 在本发明的示例性实施例中，可以假设两个信号将不被同时接收，从而允许相当大的硬件重用并降低可互操作的接收机的成本。 要强调的是，该摘要被提供以符合要求摘要的规则，这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。

公开(公告)号：US08125386B2

公开(公告)日：2012-02-28

申请号：US12612483

申请日：2009-11-04

Applicant: John G. N. Henderson ,  Carl Scarpa

Inventor： John G. N. Henderson ,  Carl Scarpa

IPC: H01Q3/12 ,  H01Q3/00

CPC classification number: H01Q1/007 ,  H01Q1/24 ,  H01Q3/2611 ,  H01Q7/005

Abstract: Antennas with steerable antenna patterns and techniques for using such antennas are described. In accordance with the invention, antenna patterns with one or more NULLs are used. Through the use of digital control signals the antenna pattern is steered so that a source of signal interference, e.g., a multipath signal, will be located in a NULL. In this manner the received signal's S/N ratio can be maximized thereby facilitating demodulation. The techniques of the invention can be applied to television, computer devices, mobile devices and a wide range of other systems. Digital commands to control an antenna may include multiple information fields, e.g., a direction field, a channel field, a gain field and a polarity field. Antennas incapable of supporting the specified fields disregard information in fields which are not supported. Information in each supported field is decoded and used to adjust the corresponding antenna characteristic.

Abstract translation: 描述了具有可导向天线方向图和使用这种天线的技术的天线。 根据本发明，使用具有一个或多个NULL的天线方向图。 通过使用数字控制信号，导航天线方向图，使得诸如多路径信号的信号干扰源将位于空值中。 以这种方式，可以使接收信号的S / N比最大化，从而便于解调。 本发明的技术可以应用于电视，计算机设备，移动设备以及各种其它系统。 用于控制天线的数字命令可以包括多个信息字段，例如方向字段，信道字段，增益字段和极性字段。 无法支持指定字段的天线无视不支持的字段中的信息。 每个支持的字段中的信息被解码并用于调整相应的天线特性。

公开(公告)号：US07742750B2

公开(公告)日：2010-06-22

申请号：US11607383

申请日：2006-12-01

Applicant: Carl Scarpa ,  Sharif Sazzad ,  Christopher Strolle

Inventor： Carl Scarpa ,  Sharif Sazzad ,  Christopher Strolle

IPC: H04B1/06

CPC classification number: H04B7/0871 ,  H04B7/0868

Abstract: Systems and methods are presented for digital antenna diversity combining. In exemplary embodiments of the present invention, at least two antenna signal paths can be communicably connected to a receiver. Each antenna signal path can be provided with an RF tuner communicably connected to a demodulator, which can estimate the signal to noise ratio (SNR) and time of arrival of its respective antenna signal. In exemplary embodiments of the present invention, a time alignment circuit can be communicably connected to each antenna signal path, and a maximum ratio combiner can be communicably connected to the time alignment circuit. In operation, the time alignment circuit can use the time of arrival estimate to align the multiple signals and the maximum ratio combiner can use the SNR estimate obtained for each antenna signal to respectively weight each signal and thereby generate a combined output signal. In exemplary embodiments of the present invention, a switch diversity combiner can be further provided, and can quickly detect when an antenna signal is entering a fade, allowing the maximum ratio combiner to set that signal's weight to zero. In exemplary embodiments of the present invention, a digital diversity combiner can be provided in a stand alone integrated circuit, or can be integrated in a larger integrated circuit, such as, for example, a satellite radio overlay processor.

Abstract translation: 提出了数字天线分集组合的系统和方法。 在本发明的示例性实施例中，至少两个天线信号路径可以可通信地连接到接收器。 每个天线信号路径可以设置有可通信地连接到解调器的RF调谐器，其可以估计其相应天线信号的信噪比（SNR）和到达时间。 在本发明的示例性实施例中，时间对准电路可以可通信地连接到每个天线信号路径，并且最大比率组合器可以可通信地连接到时间对准电路。 在操作中，时间对准电路可以使用到达时间估计来对准多个信号，并且最大比组合器可以使用为每个天线信号获得的SNR估计来分别对每个信号加权，从而生成组合的输出信号。 在本发明的示例性实施例中，可以进一步提供开关分集组合器，并且可以快速地检测天线信号何时进入衰落，允许最大比组合器将该信号的权重设置为零。 在本发明的示例性实施例中，数字分集组合器可以设置在独立集成电路中，或者可以集成在诸如卫星无线电覆盖处理器之类的较大集成电路中。