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1. 发明授权

US06947500B1 Buffering and sequencing of soft decisions of multiple channels into a single shared biorthogonal decoder 有权
标题翻译：将多个信道的软判决缓冲和排序到单个共享双正交解码器中
公开(公告)号：US06947500B1
公开(公告)日：2005-09-20
申请号：US09239871
申请日：1999-01-29
申请人： Dominic P. Carrozza , Vincent C. Moretti , David A. Wright , Gregory S. Caso
发明人： Dominic P. Carrozza , Vincent C. Moretti , David A. Wright , Gregory S. Caso
IPC分类号： H03M13/37 , H03M13/45 , H04J3/00 , H04L1/00 , H04L27/22 , H04L27/06
CPC分类号： H04L1/0057 , H04L1/0052 , H04L1/0053 , H04L1/0065
摘要： The invention is a receiver and a method of receiving data having a preferred application in a satellite receiver in accordance with the invention includes a memory (114) including an addressable storage array which stores a sequence of data samples contained in a time division multiplexed signal from a plurality channels (X, Y and Z) and outputs the stored data samples in a sequence of data groups with each data group containing a plurality of samples from one of the plurality of channels; and a decoder (116), responsive to the data groups, which decodes the data samples within the data groups and outputs decoded data samples.
摘要翻译：本发明是一种在根据本发明的卫星接收机中接收具有优选应用的数据的接收机和方法，包括：存储器（114），包括可寻址存储阵列，其存储包含在时分多路复用信号中的数据样本序列，多个通道（X，Y和Z），并且从多个通道中的一个通道中的每个数据组包含多个采样的数据组序列中输出所存储的数据样本; 以及响应于数据组的解码器（116），其对数据组内的数据样本进行解码并输出解码的数据样本。

2. 发明授权

US06845085B1 Synchronization method for a processing communication satellite 有权
标题翻译：处理通信卫星的同步方法
公开(公告)号：US06845085B1
公开(公告)日：2005-01-18
申请号：US09408965
申请日：1999-09-29
申请人： David A. Wright , Stuart T. Linsky , Gregory S. Caso , Reginald Jue
发明人： David A. Wright , Stuart T. Linsky , Gregory S. Caso , Reginald Jue
IPC分类号： H04L27/20 , H04B7/185 , H04B7/212 , H04J3/00 , H04L7/00 , H04L27/36 , H04J3/06
CPC分类号： H04B7/18513
摘要： The present invention provides a highly accurate synchronization method for a satellite communication system (100). The system maintains a downlink symbol counter at an earth terminal and determines a downlink symbol count representative of the time of arrival of a burst transmitted from the earth terminal to a satellite (106, 206). The earth terminal adjusts the downlink symbol counter to correspond to the downlink symbol count (136, 220) upon arrival of a predetermined reference point in a downlink frame. A timing error may initially be determined by launching an entry order wire from the earth terminal to the satellite (116). The timing error may be transmitted to the earth terminal using a correction code which indicates the transmission is early, late, absent, or no change is required (134, 218). The terminal may make additional periodic timing adjustments based on the length of the propagation path between the earth terminal and the satellite (108, 208). The earth terminal may then precisely time the transmission of bursts from the earth terminal to the satellite (130, 214). The length of the propagation path and the timing error may be stored in the earth terminal so that the earth terminal may reenter the system without undertaking multiple commissioning processes.
摘要翻译：本发明提供了一种用于卫星通信系统（100）的高精度同步方法。该系统在接地终端维护下行链路符号计数器，并确定表示从地球终端向卫星（106,206）发送的脉冲串的到达时间的下行链路符号计数。接地终端在下行链路帧中预定参考点到达时，调整下行链路符号计数器以对应于下行链路符号计数（136,220）。最初可以通过从地球终端向卫星（116）发射入口命令线来确定定时错误。定时误差可以使用指示传输是早，晚，不存在或不需要改变的校正码（134,218）来发送到接地终端。终端可以基于接地终端和卫星（108,208）之间的传播路径的长度来进行附加的周期性定时调整。然后，接地终端可以精确地将从地球终端到突发的传输时间延时到卫星（130,214）。传播路径的长度和定时误差可以存储在接地端子中，使得接地端子可以重新进入系统而不进行多次调试过程。

3. 发明授权

US06697344B1 Onboard initial entry processor for facilitating a satellite communication 失效
标题翻译：板载初始入口处理器，用于促进卫星通信
公开(公告)号：US06697344B1
公开(公告)日：2004-02-24
申请号：US09270167
申请日：1999-03-16
申请人： Dominic P. Carrozza , Gregory S. Caso , Vincent C. Moretti , Reginald Jue , David A. Wright
发明人： Dominic P. Carrozza , Gregory S. Caso , Vincent C. Moretti , Reginald Jue , David A. Wright
IPC分类号： H04B7185
CPC分类号： H04B7/1858
摘要： An initial entry processor (40) for use in a processing satellite (12) in a satellite based communications system (10) is provided having a buffer (62), a detection and timing circuit (64) and an identity circuit (66). The buffer (62) stores an initial entry burst (54) transmitted from at least one terrestrial terminal (14) to the processing satellite (12). The detection and timing circuit (64) detects the initial entry burst (54) and determines a time of arrival of the initial entry burst (54) relative to an initial entry burst slot (52). The identity circuit (66) determines an identity of the terrestrial terminal (14) that transmitted the initial entry burst (54) such that the time of arrival is used by the identified terrestrial terminal (14) during subsequent communications with the processing satellite (12).
摘要翻译：提供了一种用于基于卫星的通信系统（10）中的处理卫星（12）中的初始入口处理器（40），其具有缓冲器（62），检测和定时电路（64）以及标识电路（66）。缓冲器（62）存储从至少一个地面终端（14）发送到处理卫星（12）的初始入口突发（54）。检测和定时电路（64）检测初始入口突发（54）并且确定初始入口突发（54）相对于初始入口突发时隙（52）的到达时间。身份电路（66）确定发射初始入口突发（54）的地面终端（14）的身份，使得在与处理卫星（12）的后续通信期间由所识别的地面终端（14）使用到达时间）。

4. 发明授权

US06445685B1 Uplink demodulator scheme for a processing satellite 有权
标题翻译：用于处理卫星的上行链路解调器方案
公开(公告)号：US06445685B1
公开(公告)日：2002-09-03
申请号：US09407921
申请日：1999-09-29
申请人： Dominic P. Carrozza , Vincent C. Moretti , Stuart T. Linsky , David A. Wright , Gregory S. Caso
发明人： Dominic P. Carrozza , Vincent C. Moretti , Stuart T. Linsky , David A. Wright , Gregory S. Caso
IPC分类号： H04L27233
CPC分类号： H04L1/004 , H04B7/18515 , H04L27/22
摘要： An uplink demodulator system (44) for use in a processing satellite (12) in a satellite based communications system (10) is provided with a first multiplexer (62), a second multiplexer (82), a multichannel preamble processor (66), and a multichannel phase tracker (68). The first multiplexer (62) is operable to receive channelized data from a plurality of channelization modes at a plurality of inputs and operable to route the channelized data to a first output. The multichannel preamble processor (66) is operable to determine a phase estimate for each channel of the channelized data. The multichannel phase tracker (68) is operable to receive the phase estimates from the multichannel preamble processor (66) and operable to track a phase for each channel of said channelized data to phase align each channel of said channelized data to corresponding uplink signals. The second multiplexer (82) is operable to multiplex and route heavy encoded channelized data and light encoded channelized data to a second output where the multiplex channelized data is phase aligned with the corresponding uplink signals.
摘要翻译：一种在基于卫星的通信系统（10）中用于处理卫星（12）中的上行链路解调器系统（44）设置有第一多路复用器（62），第二多路复用器（82），多信道前同步码处理器（66）和多通道相位跟踪器（68）。第一多路复用器（62）可操作以在多个输入处从多个信道化模式接收信道化数据，并可操作以将信道化数据路由到第一输出。多信道前导码处理器（66）可操作以确定信道化数据的每个信道的相位估计。多通道相位跟踪器（68）可操作以从多通道前导码处理器（66）接收相位估计，并且可操作以跟踪所述信道化数据的每个信道的相位，以将所述信道化数据的每个信道相位对准相应的上行链路信号。第二多路复用器（82）可用于将重编码的信道化数据和光编码的信道化数据复用并路由到第二输出，其中多路信道化数据与对应的上行链路信号相位对准。

5. 发明授权

US06512749B1 Downlink transmission and reception techniques for a processing communication satellite 有权
标题翻译：用于处理通信卫星的下行链路传输和接收技术
公开(公告)号：US06512749B1
公开(公告)日：2003-01-28
申请号：US09408041
申请日：1999-09-29
申请人： David A. Wright , Stuart T. Linsky , Donald C. Wilcoxson , Eldad Perahia , Gregory S. Caso
发明人： David A. Wright , Stuart T. Linsky , Donald C. Wilcoxson , Eldad Perahia , Gregory S. Caso
IPC分类号： H04B7185
CPC分类号： H04B7/18515
摘要： Communication satellite downlink transmitting and reception techniques includes circuitry which groups a predetermined number of data cells with a predetermined error correction code to generate frame bodies. The circuitry also groups the frame bodies with header symbols and trailer symbols to generate data frames. One or more modulators enable the placement of the modulated data frames into a plurality of frequency bands having a predetermined frequency range and a predetermined transmission rate. One or more antennas transmit the modulated data frames over one or more beams with different forms of polarization to other antennas. A demodulator is connected to demodulate the radio carrier signals and the beams into data frames from a plurality of frequency bands. Decoders are connected to decode the frame bodies with header symbols and with trailer symbols from the data frames and to decode four data cells as a group by using a predetermined error correction code.
摘要翻译：通信卫星下行链路发射和接收技术包括以预定的纠错码对预定数量的数据信元进行分组以产生帧体的电路。电路还将帧体与头部符号和尾部符号分组以产生数据帧。一个或多个调制器使得能够将经调制的数据帧放置在具有预定频率范围和预定传输速率的多个频带中。一个或多个天线将具有不同形式的偏振的一个或多个波束上的经调制的数据帧发射到其他天线。连接解调器，将无线电载波信号和波束解调成来自多个频带的数据帧。连接解码器以用头部符号和来自数据帧的尾标符号对帧体进行解码，并通过使用预定的纠错码将四个数据信元解码为一组。

6. 发明授权

US06466569B1 Uplink transmission and reception techniques for a processing satelliteation satellite 有权
标题翻译：用于处理卫星卫星的上行链路传输和接收技术
公开(公告)号：US06466569B1
公开(公告)日：2002-10-15
申请号：US09408331
申请日：1999-09-29
申请人： David A. Wright , Stuart T. Linsky , Donald C. Wilcoxson , Eldad Perahia , Gregory S. Caso
发明人： David A. Wright , Stuart T. Linsky , Donald C. Wilcoxson , Eldad Perahia , Gregory S. Caso
IPC分类号： H04Q1104
CPC分类号： H04B7/18513
摘要： Uplink transmission and reception techniques for a processing satellite including one or more earth terminals 400 connected to receive ATM data cells. One or more encoders 418 are connected to coordinate four data cells with an error correction code to generate data bursts and to coordinate the data bursts with synchronizing bursts to generate data frames. One or more modulators 420 are connected to modulate the data frames by frequency division multiple access modulation to enable placement of the modulated data frames into a plurality of channels. One or more antennas 406 transmit the modulated data frames to a satellite 100 over 48 beams with various forms of polarization. In satellite 100, a receiving multibeam antenna and feed 106 responds to one or more beams of radiocarrier signals having one or more forms of polarization. One or more demodulators 138 demodulate the radio carrier signals into data frames from various channels including a plurality of channel types. One or more decoders 146 decode data bursts and synchronizing bursts from the data frames and decode four data cells from the bursts using error correction code.
摘要翻译：用于包括连接到接收ATM数据单元的一个或多个接地端子400的处理卫星的上行链路传输和接收技术。连接一个或多个编码器418以配置具有纠错码的四个数据单元，以产生数据脉冲串，并且以同步脉冲串协调数据脉冲以产生数据帧。连接一个或多个调制器420以通过频分多址调制来调制数据帧，以便将调制的数据帧放置在多个信道中。一个或多个天线406通过具有各种形式的偏振的48个波束将经调制的数据帧发射到卫星100.在卫星100中，接收多波束天线和馈送106响应于具有一个或多个形式的极化的一个或多个无线电载波信号波束。一个或多个解调器138将无线电载波信号解调为包括多个信道类型的各种信道的数据帧。一个或多个解码器146解码数据突发并且从数据帧中同步脉冲串，并使用纠错码从脉冲串中解码四个数据信元。

7. 发明授权

US06349118B1 Digital channelizer having efficient architecture for cyclic shifting and method of operation thereof 有权
标题翻译：具有用于循环移位的有效结构的数字信道化及其操作方法
公开(公告)号：US06349118B1
公开(公告)日：2002-02-19
申请号：US09258847
申请日：1999-02-26
申请人： Gregory S. Caso , Vincent C. Moretti
发明人： Gregory S. Caso , Vincent C. Moretti
IPC分类号： H04L2704
CPC分类号： H04L5/06
摘要： The invention is a digital channelizer and a process for dividing an input bandwidth into at least some of N channels. A digital channelizer which divides an input bandwidth into at least some of N channels in accordance with the invention includes a window presum (102); a cyclic shift (24′), coupled to the I output groups of date words, having I cyclic shift paths, each cyclic shift path being responsive to a different output group of data words to produce I output groups of data words, each cyclic shift path comprising a plurality of word shifting elements each responsive to a group of data words; and a discrete Fourier transform (26′) coupled to the I output groups of cyclically shifted data words outputted from the cyclic shift.
摘要翻译：本发明是数字信道化器和将输入带宽划分成N个信道中的至少一些信道的过程。根据本发明，将输入带宽划分为至少一些N个信道的数字信道发送器包括窗口预测（102）; 耦合到具有I循环移位路径的I个输出组的日期字的循环移位（24'），每个循环移位路径响应不同的数据字输出组以产生I个数据字组，每个循环移位路径，其包括多个字移位元件，每个字移位元件响应于一组数据字; 以及耦合到从循环移位输出的循环移位数据字的I个输出组的离散傅里叶变换（26'）。

8. 发明授权

US06704297B1 Downlink orderwire integrator and separator for use in a satellite based communications system 有权
标题翻译：用于基于卫星的通信系统中的下行链路积分器和分离器
公开(公告)号：US06704297B1
公开(公告)日：2004-03-09
申请号：US09644588
申请日：2000-08-23
申请人： David A. Wright , Stuart T. Linsky , Gregory S. Caso
发明人： David A. Wright , Stuart T. Linsky , Gregory S. Caso
IPC分类号： H04B700
CPC分类号： H04B7/18515
摘要： A downlink orderwire integrator (63) and separator (81) for use in a processing satellite (12) and a user terminal (14) in a satellite based communications system (10) is provided having a formatter (64), a cell switch (72) and a cell sieve (80). The formatter (64) generates orderwire cells (54) with each orderwire cell (54) having a header (60) and a body (62). The cell switch (72) receives the orderwire cells (54) from the formatter (64) and traffic cells (56) from at least one uplink (16) and arranges the orderwire cells (54) and the traffic cells (52) in at least one frame (48) to transmit on at least one downlink (18). The frame (48) includes a fixed custom frame portion (42) and a fixed traffic portion (50) that contains both the traffic cells (52) and the orderwire cells (54). The cell sieve (80) receives at least one frame (48) from the at least one downlink (18) and separates the traffic cells (52) and the orderwire cells (54) from the traffic portion (50), such that the formatter (64) and cell switch (72) are positioned within the processing satellite (12) and the cell sieve (80) is positioned within the user terminal (14).
摘要翻译：提供了一种用于卫星通信系统（10）中的处理卫星（12）和用户终端（14）中的下行链路顺序集成器（63）和分离器（81），其具有格式器（64），小区开关 72）和细胞筛（80）。格式器（64）产生有序线电池单元（54），每个单线单元（54）具有头部（60）和主体（62）。小区交换机（72）从格式器（64）和来自至少一个上行链路（16）的业务信元（56）接收订单线路单元（54），并且将订单线路单元（54）和业务单元（52）布置在至少一个帧（48）在至少一个下行链路（18）上传输。帧（48）包括固定的定制帧部分（42）和包含业务信元（52）和有线单元（54）的固定业务部分（50）。细胞筛（80）从至少一个下行链路（18）接收至少一个帧（48），并将业务信元（52）和有线单元（54）与业务部分（50）分离，使得格式化器（64）和小区开关（72）位于处理卫星（12）内，并且小区筛（80）位于用户终端（14）内。

9. 发明授权

US06515987B1 Serial to parallel conversion of data to facilitate sharing a single buffer among multiple channels 有权
标题翻译：串行到并行转换数据，以便于在多个通道之间共享单个缓冲区
公开(公告)号：US06515987B1
公开(公告)日：2003-02-04
申请号：US09239872
申请日：1999-01-29
申请人： Dominic P. Carrozza , Gregory S. Caso
发明人： Dominic P. Carrozza , Gregory S. Caso
IPC分类号： H04Q1104
CPC分类号： G06F7/785 , H04B7/18515
摘要： The invention is a receiver and a method of receiving data having a preferred application in a satellite. A receiver in accordance with the invention includes at least one memory (118, 120), each memory including an addressable storage array which stores a sequence of data samples contained in a time division multiplexed signal and outputs the stored data samples from a plurality of channels in a sequence of data groups with each data group containing a plurality of samples from one of the plurality of channels; and an outer decoder (102), responsive to data blocks with each data block containing at least one data group, which decodes the data blocks and outputs decoded data blocks.
摘要翻译：本发明是一种在卫星中接收具有优选应用的数据的接收机和方法。根据本发明的接收机包括至少一个存储器（118,120），每个存储器包括可寻址存储阵列，其存储包含在时分多路复用信号中的数据样本序列，并从多个通道输出所存储的数据样本在数据组的序列中，每个数据组包含来自多个通道之一的多个样本; 以及外部解码器（102），响应于每个数据块包含至少一个数据组的数据块，其对数据块进行解码并输出解码的数据块。

10. 发明授权

US06452962B1 Mitigation of co-channel interference in synchronization bursts in a multi-beam communication system 有权
标题翻译：在多波束通信系统中同步突发中的同信道干扰的减轻
公开(公告)号：US06452962B1
公开(公告)日：2002-09-17
申请号：US09330441
申请日：1999-06-11
申请人： Stuart T. Linsky , Gregory S. Caso , David A. Wright
发明人： Stuart T. Linsky , Gregory S. Caso , David A. Wright
IPC分类号： H04B169
CPC分类号： H04B7/18513
摘要： In a cellular satellite system such as Astrolink, where same frequency, same polarization (same “color”) signals are used in multiple ground cells, there exists the possibility of interference and false reception of uplink Synchronization Bursts (SB) in systems employing TDMA access of the frequency in question. In such systems, a SB transmitted from one terminal may be received in more than one satellite beam. The reception of the signal from a terminal in an undesired beam (330) is erroneous and may adversely impact the time synchronization (360) of the desired terminal. For example, a system may employ Maximal Length (ML) Pseudo-Noise (PN) sequences (410) for its SBs wherein every beam may use the same sequence. To minimize false reception, the ML PN sequences (410) of each SB may be cyclicly shifted a different amount for each beam to generate sequences (410, 420) having low corsscorrelation with each other. By choosing ML PN codes having low crosscorrelation (410, 420) for the different beams, the interference from undesired beams may be minimized (530).
摘要翻译：在诸如Astrolink的蜂窝卫星系统中，在多个接地小区中使用相同的频率，相同的极化（相同的“彩色”）信号，在采用TDMA接入的系统中存在上行同步突发（SB）的干扰和错误接收的可能性的频率。在这样的系统中，从一个终端发送的SB可以在多于一个的卫星波束中被接收。来自不期望的波束（330）中的终端的信号的接收是错误的并且可能不利地影响期望的终端的时间同步（360）。例如，系统可以为其SB使用最大长度（ML）伪噪声（PN）序列（410），其中每个波束可以使用相同的序列。为了最小化错误接收，每个SB的ML PN序列（410）可以针对每个波束循环移位不同的量，以产生彼此具有低相关性的序列（410,420）。通过选择对于不同波束具有低互相关（410,420）的ML PN码，可以最小化不期望波束的干扰（530）。

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