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1. 发明申请

US20060215785A1 Simplified scrambling scheme for satellite broadcasting systems 有权
标题翻译：卫星广播系统的简化扰频方案
公开(公告)号：US20060215785A1
公开(公告)日：2006-09-28
申请号：US10568384
申请日：2004-08-27
申请人： Ernest Chen , Dennis Lai , Tung-Sheng Lin , William Lindsey , Shamik Maitra , Joseph Santoru , Guangcai Zhou
发明人： Ernest Chen , Dennis Lai , Tung-Sheng Lin , William Lindsey , Shamik Maitra , Joseph Santoru , Guangcai Zhou
IPC分类号： H04L27/12
CPC分类号： H04L25/03866 , H04B7/18523 , H04L27/36 , H04N21/23895 , H04N21/4382 , H04N21/43853 , H04N21/6143 , H04N21/6193
摘要： A simplified scrambling scheme that unifies all signals of a satellite broadcasting system, including frame header (404), frame body (402) and pilot symbols (408) with a common reference phase. This results in the simplification and increased flexibility of the receiver front-end design without affecting the overall system performance. In many current communications systems with frame headers and pilot symbols, the phases of frame headers and pilot syrnbols are not designed to be aligned with any constellation points of the modulated data from the frame body. This scrambling scheme takes into account possible impact due to irregular phase changes between frame headers/pilot symbols and modulated data.
摘要翻译：一种简化的加扰方案，其将具有公共参考相位的卫星广播系统的所有信号（包括帧头部（404）），帧体（402）和导频符号（408）统一起来。这导致了接收机前端设计的简化和增加的灵活性，而不会影响整个系统的性能。在具有帧头和导频符号的许多当前通信系统中，帧头和导频符号的相位不被设计为与来自帧体的调制数据的任何星座点对准。该加扰方案考虑到由帧头/导频符号和调制数据之间的不规则相位变化引起的可能的影响。

2. 发明申请

US20050229230A1 Shifted channel characteristics for mitigating co-channel interference 有权
标题翻译：改变通道特性，以减轻同频干扰
公开(公告)号：US20050229230A1
公开(公告)日：2005-10-13
申请号：US11102983
申请日：2005-04-11
申请人： Joseph Santoru , Ernest Chen , Shamik Maitra , Dennis Lai , Guangcai Zhou , Tung-Sheng Lin
发明人： Joseph Santoru , Ernest Chen , Shamik Maitra , Dennis Lai , Guangcai Zhou , Tung-Sheng Lin
IPC分类号： H04B7/185 , H04L9/00 , H04N5/21 , H04N7/16 , H04N7/167 , H04N7/173 , H04N5/445
CPC分类号： H04N5/211 , H04B7/18513 , H04B7/1858 , H04N7/16 , H04N7/163 , H04N7/1675 , H04N7/17318 , H04N21/2347 , H04N21/4405 , H04N21/6143
摘要： Methods and apparatuses for minimizing co-channel interference in communications systems are disclosed. A method in accordance with the present invention comprises shifting a characteristic of the first signal with respect to a like characteristic of the second signal to mitigate co-channel interference, and transmitting the first signal and the second signal over different channels of the communication system.
摘要翻译：公开了用于最小化通信系统中的同信道干扰的方法和装置。根据本发明的方法包括相对于第二信号的相似特性移动第一信号的特性以减轻同信道干扰，以及通过通信系统的不同信道发送第一信号和第二信号。

3. 发明申请

US20050226414A1 Methods and apparatuses for minimizing co-channel interference 有权
标题翻译：用于最小化同频道干扰的方法和装置
公开(公告)号：US20050226414A1
公开(公告)日：2005-10-13
申请号：US11103307
申请日：2005-04-11
申请人： Lin-Nan Lee , Feng-Wen Sun , Adam Ancken , Joseph Santoru , Ernest Chen , Shamik Maitra , Dennis Lai , Guangcai Zhou , Tung-Sheng Lin
发明人： Lin-Nan Lee , Feng-Wen Sun , Adam Ancken , Joseph Santoru , Ernest Chen , Shamik Maitra , Dennis Lai , Guangcai Zhou , Tung-Sheng Lin
IPC分类号： H04B7/185 , H04L9/00 , H04N5/21 , H04N7/16 , H04N7/167 , H04N7/173
CPC分类号： H04N5/211 , H04B7/18513 , H04B7/1858 , H04N7/16 , H04N7/163 , H04N7/1675 , H04N7/17318 , H04N21/2347 , H04N21/4405 , H04N21/6143
摘要： Methods and apparatuses for minimizing co-channel interference in communications systems are disclosed. A method in accordance with the present invention comprises scrambling a first frame using a first scrambling code, attaching a first header to the first frame to create the first signal, scrambling a second frame using a second scrambling code, attaching a second header to the second frame to create the second signal, and transmitting the first signal and the second signal over different channels of the communication system.
摘要翻译：公开了用于最小化通信系统中的同信道干扰的方法和装置。根据本发明的方法包括使用第一扰码对第一帧进行加扰，将第一报头附加到第一帧以产生第一信号，使用第二扰码对第二帧进行加扰，将第二报头附加到第二帧以产生第二信号，以及通过通信系统的不同信道发送第一信号和第二信号。

4. 发明申请

US20070146223A1 Tri-head KaKuKa feed for single-offset dish antenna 有权
公开(公告)号：US20070146223A1
公开(公告)日：2007-06-28
申请号：US11712327
申请日：2007-02-28
申请人： Kesse Ho , John Norin , Ernest Chen , Joseph Santoru
发明人： Kesse Ho , John Norin , Ernest Chen , Joseph Santoru
IPC分类号： H01Q13/00
CPC分类号： H01Q25/007 , H01Q5/45 , H01Q19/17
摘要： A method and apparatus for receiving signals transmitted from a plurality of communications satellites. An apparatus in accordance with the present invention comprises a reflecting surface having a focal point, and a plurality of low noise block down converters with feedhorns (LNBFs), each LNBF having a boresight, wherein at least a first LNBF receives signals in a first frequency band transmitted from a first communication satellite location that are focused at a first focal point and at least a second LNBF receives signals in a second frequency band transmitted from a second satellite location that are focused at a second focal point, wherein the boresight of the first LNBF is closer to the first focal point than the boresight of the second LNBF is to the second focal point.

5. 发明申请

US20070071134A1 Dual layer signal processing in a layered modulation digital signal system 有权
公开(公告)号：US20070071134A1
公开(公告)日：2007-03-29
申请号：US11603776
申请日：2006-11-22
申请人： Ernest Chen , Tiffany Furuya , Philip Hilmes , Joseph Santoru
发明人： Ernest Chen , Tiffany Furuya , Philip Hilmes , Joseph Santoru
IPC分类号： H03D3/00
CPC分类号： H04H40/90 , H04H20/30 , H04L27/3488 , H04N5/4401 , H04N5/455 , H04N21/234327 , H04N21/4382
摘要： Systems and methods for receiving layered modulation for digital signals are presented. An exemplary apparatus comprises a tuner for receiving a layered signal and producing a layered in-phase signal and a layered quadrature signal therefrom, an analog-to-digital converter for digitizing the layered in-phase signal and the layered quadrature signal and a processor for decoding the layered in-phase signal and the layered quadrature signal to produce one or more discrete layer signals.

6. 发明申请

US20060050805A1 Method and apparatus for layered modulation 失效
标题翻译：用于分层调制的方法和装置
公开(公告)号：US20060050805A1
公开(公告)日：2006-03-09
申请号：US10519375
申请日：2003-07-03
申请人： Ernest Chen , Joseph Santoru
发明人： Ernest Chen , Joseph Santoru
IPC分类号： H04L27/20
CPC分类号： H04L27/183 , H04L1/20 , H04L1/208 , H04L27/3488 , H04L2001/0098
摘要： Improvements to a layered modulation (LM) implementation are disclosed. The present invention discloses two implementations of LM, using single and multiple transponders per signal frequency, respectively. Layered hierarchical 8PSK (H-8PSK) is a special case of LM. By re-encoding the high-priority (HP) portion of an H-8PSK signal, LM can improve carrier-to-noise ratio (CNR) of a H-8PSK signal. LM can be computer-simulated and a two-layered signal can be sequentially demodulated with a predicted CNR performance. An LM signal can be simulated 10 using live signals for off-line processing. In addition, a signal processing apparatus can process in real time LM signals emulated from live satellite signals.
摘要翻译：公开了对分层调制（LM）实现的改进。本发明公开了LM的两种实施方式，每个信号频率分别使用单个和多个转发器。层次分层8PSK（H-8PSK）是LM的一种特殊情况。通过重新编码H-8PSK信号的高优先级（HP）部分，LM可以提高H-8PSK信号的载波噪声比（CNR）。 LM可以被计算机模拟，并且可以用预测的CNR性能来顺序地解调两层信号。可以使用实时信号来模拟LM信号以进行离线处理。此外，信号处理装置可以实时处理从实时卫星信号仿真的LM信号。

7. 发明申请

US20060153314A1 Method and apparatus for tailoring carrier power requirements according to availability in layered modulation systems 有权
标题翻译：根据分层调制系统的可用性定制载波功率要求的方法和装置
公开(公告)号：US20060153314A1
公开(公告)日：2006-07-13
申请号：US10532582
申请日：2003-10-15
申请人： Ernest Chen , Paul Anderson , Joseph Santoru
发明人： Ernest Chen , Paul Anderson , Joseph Santoru
IPC分类号： H04L27/20
CPC分类号： H04L27/18 , H04H20/28 , H04H20/31 , H04H20/74 , H04H40/90 , H04L27/3488 , H04N21/2383
摘要： A method and apparatus transmitting a layered modulation signal having a first signal layer having first signal symbols and a second signal layer having second signal symbols is disclosed. The method comprises the steps of determining a first signal layer modulation carrier power CL at least in part according to a first signal layer clear sky margin ML and a first signal layer availability, determining an second signal layer modulation carrier power CU at least in part according to an second signal layer clear sky margin MU and an second signal layer availability, modulating the first signal symbols according to a first carrier at the determined first signal layer modulation carrier power; modulating the second signal symbols according to a second carrier at the determined second signal layer modulation carrier power, and transmitting the two layers independently.
摘要翻译：公开了一种发送具有具有第一信号符号的第一信号层和具有第二信号符号的第二信号层的分层调制信号的方法和装置。该方法包括以下步骤：至少部分地根据第一信号层透明天空边缘M L1和第一信号层确定第一信号层调制载波功率C L 可用性，至少部分地根据第二信号层透明天空边缘M N和第二信号层可用性来确定第二信号层调制载波功率C SUB，调制在确定的第一信号层调制载波功率下根据第一载波的第一信号符号; 根据所确定的第二信号层调制载波功率根据第二载波调制第二信号符号，并且独立地发送两个层。

8. 发明申请

US20070206638A1 BLIND IDENTIFICATION OF ADVANCED MODULATION AND CODING MODES 有权
标题翻译：高级调制和编码模式的盲点识别
公开(公告)号：US20070206638A1
公开(公告)日：2007-09-06
申请号：US11672461
申请日：2007-02-07
申请人： Joseph Santoru , Guangcai Zhou , Ernest Chen , Dennis Lai , Shamik Maitra
发明人： Joseph Santoru , Guangcai Zhou , Ernest Chen , Dennis Lai , Shamik Maitra
IPC分类号： H04J3/00
CPC分类号： H04L25/03866 , H04L1/0046 , H04L1/0057 , H04L1/0072 , H04L7/04 , H04L27/0012 , H04N5/4401 , H04N7/20 , H04N21/2383 , H04N21/2389 , H04N21/434 , H04N21/4382 , H04N21/4385 , H04N21/6143
摘要： Methods and apparatuses for acquiring and demodulating a data stream transmitted in a communication system. A method in accordance with the present invention comprises finding a boundary of a physical layer frame (PLFrame) in the data stream, finding a first 26 bits of a Unique Word (UW) associated with the data stream, finding a scrambling code utilizing the UW, and using a decoding procedure to determine a modulation type and code rate used for desired signals within the data stream.
摘要翻译：用于获取和解调在通信系统中发送的数据流的方法和装置。根据本发明的方法包括找到数据流中的物理层帧（PLFrame）的边界，找到与数据流相关联的唯一字（UW）的前26位，利用UW 并且使用解码过程来确定用于数据流内的期望信号的调制类型和码率。

9. 发明申请

US20070147547A1 PREPROCESSING SIGNAL LAYERS IN A LAYERED MODULATION DIGITAL SIGNAL SYSTEM TO USE LEGACY RECEIVERS 有权
标题翻译：在层级调制数字信号系统中预处理信号层使用接收器
公开(公告)号：US20070147547A1
公开(公告)日：2007-06-28
申请号：US11619173
申请日：2007-01-02
申请人： Ernest Chen , Tiffany Furuya , Philip Hilmes , Joseph Santoru
发明人： Ernest Chen , Tiffany Furuya , Philip Hilmes , Joseph Santoru
IPC分类号： H04L27/22
CPC分类号： H04L27/3488
摘要： Systems and methods for receiving non-coherent layered modulation signals are presented. An exemplary apparatus comprises a tuner for receiving a layered signal and producing a layered in-phase signal and a layered quadrature signal therefrom, an analog-to-digital converter for digitizing the layered in-phase signal and the layered quadrature signal, a processor for decoding the layered in-phase signal and the layered quadrature signal to produce a single layer in-phase signal and a single layer quadrature signal, a digital-to-analog encoder for converting the single layer in-phase signal and the single layer quadrature signal to a single layer in-phase analog signal and a single layer quadrature analog signal and a modulator for modulating the single layer in-phase analog signal and the single layer quadrature analog signal to produce a single layer signal.
摘要翻译：提出了用于接收非相干分层调制信号的系统和方法。示例性装置包括用于接收分层信号并产生分层同相信号和分层正交信号的调谐器，用于数字化分层同相信号和分层正交信号的模数转换器，用于解码分层同相信号和分层正交信号以产生单层同相信号和单层正交信号，用于转换单层同相信号和单层正交信号的数模转换编码器到单层同相模拟信号和单层正交模拟信号，以及用于调制单层同相模拟信号和单层正交模拟信号的调制器，以产生单层信号。

10. 发明申请

US20070074242A1 Methods and apparatuses for determining scrambling codes for signal transmission 有权
标题翻译：用于确定信号传输的扰码的方法和装置
公开(公告)号：US20070074242A1
公开(公告)日：2007-03-29
申请号：US11510244
申请日：2006-08-25
申请人： Judith Wang , Guangcai Zhou , Joseph Santoru , Ernest Chen , Shamik Maitra , Dennis Lai , Tung-Sheng Lin
发明人： Judith Wang , Guangcai Zhou , Joseph Santoru , Ernest Chen , Shamik Maitra , Dennis Lai , Tung-Sheng Lin
IPC分类号： H04N7/167 , H04N7/16
CPC分类号： H04K1/00 , H04B2201/709709 , H04J13/0029 , H04J13/10 , H04L1/0057 , H04L1/0072 , H04L25/03866 , H04N7/1675 , H04N21/6112 , H04N21/6143
摘要： Methods and apparatuses for determining scrambling codes for minimizing co-channel interference in a communication system. A method in accordance with the present invention comprises defining at least one initial default sequence, generating a scrambling code, scrambling a signal using the generated scrambling code, comparing the scrambled signal with all other scrambled signals meeting a specified criterion, and saving the scrambling code word if the comparison determines that the signal scrambled with the scrambling code also meets the specified criterion. The scrambling codes can be compared with each other for cross-correlation purposes to determine whether they meet the specified criterion based on laboratory testing.
摘要翻译：用于确定用于使通信系统中的同信道干扰最小化的扰码的方法和装置。根据本发明的方法包括定义至少一个初始默认序列，产生扰码，使用所生成的扰码对信号进行加扰，将加扰信号与满足指定标准的所有其他加扰信号进行比较，并且保存扰码如果比较确定用扰码加扰的信号也满足指定的标准。可以将扰码相互比较以进行互相关，以确定它们是否符合基于实验室测试的指定标准。

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