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1. 发明申请

WO2009124088A1 OVERLAY MODULATON OF COFDM USING PHASE AND MAPLITUDE OFFSET CARRIERS 审中-公开
标题翻译：使用相位和MAPLITUDE偏移载体的COFDM覆盖模块
公开(公告)号：WO2009124088A1
公开(公告)日：2009-10-08
申请号：PCT/US2009/039027
申请日：2009-03-31
申请人： SIRIUS XM RADIO INC. , SCARPA, Carl , SCHELL, Edward , STROLLE, Christopher
发明人： SCARPA, Carl , SCHELL, Edward , STROLLE, Christopher
IPC分类号： H04L27/22
CPC分类号： H04L27/2627 , H04L5/0007 , H04L5/0028 , H04L27/0008 , H04L27/0012 , H04L27/183 , H04L27/2053 , H04L27/2071 , H04L27/3488 , H04L2025/03401 , H04L2025/03414
摘要： Systems and methods are presented for transmitting additional data over preexisting differential COFDM signals by modulating existing data carriers with a phase and an amplitude offset. In exemplary embodiments of the present invention, additional data capacity can be achieved for an COFDM signal which is completely backwards compatible with existing satellite broadcast communications systems. In exemplary embodiments of the present invention additional information can be overiayed on an existing signal as a combination of amplitude and phase offset from the original QPSK symbols, applied for each information bit of the overlay data. With two additional levels of modulation, a receiver can demodulate the information from each of the previous stages and combine the information into a suitable format for soft decoding. The first stage of demodulation will be recovery of overlay data from the amplitude modulated D8PSK.
摘要翻译：提出了系统和方法，用于通过调制具有相位和幅度偏移的现有数据载波来传输先前存在的差分COFDM信号的附加数据。在本发明的示例性实施例中，可以实现与现有卫星广播通信系统完全向后兼容的COFDM信号的附加数据容量。在本发明的示例性实施例中，可以对现有信号叠加附加信息，作为对覆盖数据的每个信息位应用的与原始QPSK符号的幅度和相位偏移的组合。通过两个附加的调制级别，接收机可以解调来自每个先前阶段的信息，并将该信息组合成用于软解码的适当格式。解调的第一阶段将是从幅度调制的D8PSK恢复覆盖数据。

2. 发明申请

WO2009032451A1 OVERLAY MODULATION TECHNIQUE FOR COFDM SIGNALS BASED ON AMPLITUDE OFFSETS 审中-公开
标题翻译：基于幅度偏移的COFDM信号的覆盖调制技术
公开(公告)号：WO2009032451A1
公开(公告)日：2009-03-12
申请号：PCT/US2008/071942
申请日：2008-08-01
申请人： SIRIUS XM RADIO INC. , SCARPA, Carl , SCHELL, Edward , STROLLE, Christopher
发明人： SCARPA, Carl , SCHELL, Edward , STROLLE, Christopher
IPC分类号： H04L27/00
CPC分类号： H04L27/04 , H04L27/01 , H04L27/2601 , H04L27/265 , H04L27/3461 , H04L27/3488 , H04L69/324
摘要： Systems and methods are presented for transmitting additional data over preexisting differential COFDM signals by changing the amplitude of the legacy data symbols Additional bandwidth can be achieved for a COFDM signal while maintaining backward compatibility Additional information is overlaid on a legacy COFDM signal by applying an amplitude offset to the legacy symbols Special receiver processing can be implemented to extract this additional information, which can include performing channel equalization across frequency bins to isolate the amplitude modulated overlay signal For example, at each FFT symbol time average power across neighboring active data bins can be used to determine the localized power at the corresponding FFT bins, and a channel inversion can then, be performed on the data bins to restore, as best as possible, the original transmitted symbol amplitude
摘要翻译：提出了系统和方法，用于通过改变传统数据符号的幅度来传输预先存在的差分COFDM信号的附加数据。可以为COFDM信号实现额外的带宽，同时保持向后兼容性附加信息通过应用幅度偏移量覆盖在传统COFDM信号上传统符号可以实现特殊的接收机处理以提取这个附加信息，其可以包括在频率仓之间执行信道均衡以隔离幅度调制的覆盖信号。例如，在每个FFT符号时间，可以使用相邻的活动数据仓的平均功率以确定相应FFT仓上的局部功率，然后可以对数据箱执行信道反转，以尽可能地恢复原始发送的符号幅度

3. 发明申请

WO2009017814A2 METHOD AND APPARATUS FOR INTERLEAVING LOW DENSITY PARITY CHECK (LDPC) CODES OVER MOBILE SATELLITE CHANNELS 审中-公开
标题翻译：用于在移动卫星信道上交换低密度奇偶校验（LDPC）码的方法和装置
公开(公告)号：WO2009017814A2
公开(公告)日：2009-02-05
申请号：PCT/US2008/009297
申请日：2008-08-01
申请人： SIRIUS XM RADIO INC. , SCARPA, Carl , SCHELL, Edward
发明人： SCARPA, Carl , SCHELL, Edward
IPC分类号： H04W80/04
CPC分类号： H03M13/1105 , H03M13/1102 , H03M13/2732 , H03M13/2746 , H03M13/2771 , H03M13/2792 , H04B7/1858 , H04L1/0057 , H04L1/0071
摘要： 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.
摘要翻译：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。

4. 发明申请

WO2009146217A3 TRANSMITTING AND RECEIVING ADDITIONAL DATA OVER LEGACY SATELLITE DIGITAL AUDIO RADIO SIGNALS 审中-公开
公开(公告)号：WO2009146217A3
公开(公告)日：2009-12-03
申请号：PCT/US2009/041174
申请日：2009-04-20
申请人： SIRIUS XM RADIO INC. , SCARPA, Carl , SCHELL, Edward
发明人： SCARPA, Carl , SCHELL, Edward
IPC分类号： H04B7/185
摘要： 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.

5. 发明申请

WO2010003105A1 METHOD TO MINIMIZED INTERFERENCE INTO LEGACY SDARS RECEPTION BY VARYING OVERLAY MODULATION AS A FUNCTION OF SATELLITE POSITION 审中-公开
标题翻译：通过改变过度调节作为卫星位置的功能来将干扰最小化为接受标准的方法
公开(公告)号：WO2010003105A1
公开(公告)日：2010-01-07
申请号：PCT/US2009/049598
申请日：2009-07-02
申请人： SIRIUS XM RADIO INC. , SCARPA, Carl
发明人： SCARPA, Carl
IPC分类号： H04L27/22
CPC分类号： H04L27/22 , H04B1/1027 , H04L27/3466
摘要： In exemplary embodiments of the present invention, a degree of hierarchical modulation can be vaned as a function of satellite position, which can be related to time of day, and where such hierarchical modulation can be a combination of phase and amplitude shifts. In exemplary embodiments of the present invention, as each satellite in a multiple satellite system broadcasting to North America moves towards a D-node or an A-node position, the offset angle of a phase-based hierarchical modulation scheme can be varied. Thus, in exemplary embodiments of the present invention, the lowest satellite position In the sky can have the lowest offset angle for overlay bits, which offset angle can, for example, 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, for example, thus be at its maximum.
摘要翻译：在本发明的示例性实施例中，层次调制的程度可以作为卫星位置的函数而消失，这可以与时间相关联，并且其中这种分层调制可以是相移和幅度相移的组合。在本发明的示例性实施例中，由于向北美广播的多个卫星系统中的每个卫星朝向D节点或A节点位置移动，因此可以改变基于相位的分层调制方案的偏移角。因此，在本发明的示例性实施例中，天空中最低的卫星位置可以具有覆盖比特的最低偏移角，例如当天空中的卫星的位置增加时，偏移角可以逐渐增加。在卫星的天空最高点，覆盖偏移角例如可以达到最大值。

6. 发明申请

WO2009124065A1 IMPROVING SLOW SPEED MUTE RESISTANCE VIA SELECTIVE COFDM BIN LOADING 审中-公开
标题翻译：通过选择性COFDM加载提高慢速静电阻力
公开(公告)号：WO2009124065A1
公开(公告)日：2009-10-08
申请号：PCT/US2009/038982
申请日：2009-03-31
申请人： SIRIUS SATELLITE RADIO INC. , SCARPA, Carl , STROLLE, Christopher
发明人： SCARPA, Carl , STROLLE, Christopher
IPC分类号： H04L27/26
CPC分类号： H04L27/2627 , H04B7/0671 , H04B7/12 , H04L5/0017 , H04L27/2602
摘要： Systems and methods are presented for improving the ability to withstand slow speed mute via diversity transmission while avoiding loss in link level margin. In exemplary embodiments of the present invention, systems and methods are presented for improving resistance to slow speed muting by employing transmit diversity where a second signal is not a replica of the original signal. The second signal can be generated, for example, by using only a COFDM FFT bin that contained the cluster sync bit while setting all other bins to zero. That is, only the spectral portion of interest of the COFDM signal need be utilized. In such exemplary embodiments, the same frequency and time delay offset can be used as in current systems and methods, except that the replica COFDIvI signal can, for example, consist of only one populated FFT bin.
摘要翻译：提出了系统和方法，以提高通过分集传输来承受慢速静音的能力，同时避免链路水平裕度的损失。在本发明的示例性实施例中，提出了用于通过采用发射分集来提高对慢速静音的抵抗力的系统和方法，其中第二信号不是原始信号的复制品。例如，可以通过仅使用包含集群同步位的COFDM FFT仓而将所有其他箱设置为零来生成第二信号。也就是说，仅需要利用COFDM信号的感兴趣的频谱部分。在这样的示例性实施例中，可以像现行的系统和方法那样使用相同的频率和时间延迟偏移，除了复制的COFDIvI信号可以例如仅由一个填充的FFT仓组成。

7. 发明申请

WO2007065143A3 SYSTEMS AND METHODS FOR ANTENNA DIVERSITY COMBINING FOR SATELLITE RADIO SIGNALS 审中-公开
公开(公告)号：WO2007065143A3
公开(公告)日：2007-06-07
申请号：PCT/US2006/061455
申请日：2006-12-01
申请人： SIRIUS SATELLITE RADIO, INC. , SCARPA, Carl , SAZZAD, Sharif , STROLLE, Christopher
发明人： SCARPA, Carl , SAZZAD, Sharif , STROLLE, Christopher
IPC分类号： H04B7/08 , H04B1/06
摘要： 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 operation, a 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.

8. 发明申请

WO2016036981A1 SYSTEMS AND METHODS TO RECLAIM UNUSED THROUGHPUT IN AN SDARS SYSTEM 审中-公开
标题翻译：在SDARS系统中未采用通路的系统和方法
公开(公告)号：WO2016036981A1
公开(公告)日：2016-03-10
申请号：PCT/US2015/048401
申请日：2015-09-03
申请人： SIRIUS XM RADIO INC.
发明人： SCHELL, Edward , SCARPA, Carl , GOSLIN, John
IPC分类号： H04H60/12 , H04H60/25
CPC分类号： H04B7/185 , H04L1/004 , H04L27/3488
摘要： Systems, algorithms and methods for reclaiming unused portions of a satellite broadcast service's bandwidth for new services, utilizing higher performance coding techniques to yield better throughput, are presented. These systems, algorithms and methods achieve the reclaimed bandwidth in a way that is invisible to a legacy receiver, and that does not interfere with its reception of a legacy signal. In one embodiment, new data may be transmitted within a legacy transmission frame, for example within its cluster structure, using the same modulation and synchronization as used for the legacy data. The new data may be inserted into a channel or other subdivision at a head end. In another embodiment, one or more clusters or subdivisions with only new data may be transmitted, using the same modulation and synchronization as the legacy data clusters, but now employing a higher performing FEC and data interleaving structure on those clusters which contain only new data to yield an increase in available throughput. Finally, in a third embodiment, one or more clusters containing only new data may be transmitted, and in said one or more all new data clusters, different modulation and synchronization may be used then that of the legacy data clusters, thus employing a higher performing FEC and data interleaving structure than that of the legacy clusters. Various combinations of these approaches are also presented, as well as a set of novel receivers, or receiver configurations, to implement them and their combinations.
摘要翻译：提出了利用更高性能的编码技术来产生更好的吞吐量的系统，算法和方法，用于回收卫星广播服务的新服务带宽的未使用部分。这些系统，算法和方法以旧式接收机不可见的方式实现回收带宽，并且不干扰其对遗留信号的接收。在一个实施例中，可以使用与用于遗留数据的相同的调制和同步，在传统传输帧内例如在其簇结构内传输新数据。新的数据可以被插入到一个通道或者其他分部的头端。在另一个实施例中，可以使用与传统数据集群相同的调制和同步来发送仅具有新数据的一个或多个集群或子部分，但是现在在仅包含新数据的那些集群上采用更高性能的FEC和数据交织结构产生可用吞吐量的增加。最后，在第三实施例中，可以发送仅包含新数据的一个或多个簇，并且在所述一个或多个所有新数据簇中，可以使用不同的调制和同步，然后使用不同的调制和同步，从而采用更高性能 FEC和数据交织结构比传统集群的结构要好。还提出了这些方法的各种组合，以及一组新颖的接收机或接收机配置，以实现它们及其组合。

9. 发明申请

WO2009018474A1 METHOD AND APPARATUS TO JOINTLY SYNCHRONIZE A LEGACY SDARS SIGNAL WITH OVERLAY MODULATION 审中-公开
标题翻译：方法和装置同步同步重叠信号与覆盖调制
公开(公告)号：WO2009018474A1
公开(公告)日：2009-02-05
申请号：PCT/US2008/071811
申请日：2008-07-31
申请人： SIRIUS SATELLITE RADIO INC. , SCARPA, Carl , SCHELL, Edward
发明人： SCARPA, Carl , SCHELL, Edward
IPC分类号： H04L7/00
CPC分类号： H04L27/183 , H04J7/00 , H04L7/043 , H04L7/06 , H04L27/3488
摘要： Methods and apparatus are presented for the joint synchronization of legacy signals with overlay modulation signals in a communications system utilizing a hierarchical modulation scheme. A synchronization signal can be sent in each of the legacy and overlay bit streams, each using a different approach to frame synchronization, and the two synchronization signals can be used in a complementary manner to synchronize both bit streams. A legacy physical frame and an overlay physical frame can be aligned in time. A key synchronization signal in a legacy bit stream can be time distributed throughout a legacy transmission frame and can be utilized to assist in both the synchronization of such legacy bit stream and of an overlay bit stream. A key synchronization signal in an overlay bit stream can be sent in one fixed physical frame of an overlay transmission frame.
摘要翻译：提出了在利用分级调制方案的通信系统中传统信号与覆盖调制信号的联合同步的方法和装置。可以在传统和覆盖比特流中的每一个中发送同步信号，每个使用不同的帧同步方法，并且可以以互补的方式使用两个同步信号来同步两个比特流。传统物理帧和覆盖物理帧可以在时间上对齐。遗留比特流中的密钥同步信号可以在整个传统帧中被分时间分布，并且可用于协助这种传统比特流和覆盖比特流的同步。可以在覆盖传输帧的一个固定物理帧中发送覆盖比特流中的密钥同步信号。

10. 发明申请

WO2008121413A1 METHODS AND APPARATUS FOR INTEROPERABLE SATELLITE RADIO RECEIVERS 审中-公开
标题翻译：可互用卫星无线电接收机的方法和装置
公开(公告)号：WO2008121413A1
公开(公告)日：2008-10-09
申请号：PCT/US2008/004241
申请日：2008-03-31
申请人： SIRIUS SATELLITE RADIO INC. , SCARPA, Carl , SCHELL, Edward
发明人： SCARPA, Carl , SCHELL, Edward
IPC分类号： H04K1/10
CPC分类号： H04B7/18513
摘要： 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.
摘要翻译：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。

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