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1. 发明申请

US20080130772A1 Space-time coded OFDM system for MMDS applications 有权
公开(公告)号：US20080130772A1
公开(公告)日：2008-06-05
申请号：US12011658
申请日：2008-01-29
申请人： A. Roger Hammons , Hesham El-Gamal , Lin-Nan Lee , Stan Kay , Andrew MacDonald , Jack Rozmaryn , Bassel Beidas
发明人： A. Roger Hammons , Hesham El-Gamal , Lin-Nan Lee , Stan Kay , Andrew MacDonald , Jack Rozmaryn , Bassel Beidas
IPC分类号： H04L23/02
CPC分类号： H04L27/2602 , H04L1/0618
摘要： A communications system includes a base station that is configured to transmit a signal that is modulated according to a predetermined modulation scheme and an orthogonal frequency division multiplexing scheme, wherein the signal is encoded using space-frequency coding. The base station includes a plurality of multiple-input multiple-output (MIMO) transceivers. The system includes a terminal that is configured to receive the modulated signal. The above arrangement is particularly applicable to providing multichannel multipoint distribution services (MMDS) over a radio communications system.

2. 发明授权

US06804492B2 High volume uplink in a broadband satellite communications system 有权
标题翻译：宽带卫星通信系统中的大容量上行链路
公开(公告)号：US06804492B2
公开(公告)日：2004-10-12
申请号：US09825635
申请日：2001-04-04
申请人： Stan Kay
发明人： Stan Kay
IPC分类号： H04B7185
CPC分类号： H04B7/18584 , H04L47/14 , Y02D70/446
摘要： In a communication system with a bandwidth-on-demand processor, which may be power limited and connected to a myriad of terminals via relatively long delay paths, and another processor, which is connected to a few terminals via relatively short delay paths, an approach for effectively coordinating the processors is disclosed. A bandwidth controller receives a message requesting bandwidth from a remote processor and selectively grants the bandwidth request. The bandwidth controller transmits an assignment message that specifies a bandwidth allocation to the remote processor, and concurrently transmits a control message. A switch is configured to forward the assignment message to the remote processor. A controller is coupled to the switch and is configured to receive the control message, wherein the control message provides bandwidth allocation. The above arrangement has particular applicability to a satellite communications system.
摘要翻译：在具有带宽按需处理器的通信系统中，其可能受功率限制并通过相对长的延迟路径连接到无数个终端，并且通过相对较短的延迟路径连接到几个终端的另一处理器为了有效地协调处理器被公开。带宽控制器从远程处理器接收请求带宽的消息，并选择性地授予带宽请求。带宽控制器向远程处理器发送指定带宽分配的分配消息，同时发送控制消息。交换机被配置为将分配消息转发到远程处理器。控制器耦合到交换机并且被配置为接收控制消息，其中控制消息提供带宽分配。上述布置对卫星通信系统具有特别的适用性。

3. 发明授权

US08355462B2 System and method for combined predistortion and interference cancellation in a satellite communications system 有权
标题翻译：卫星通信系统中组合预失真和干扰消除的系统和方法
公开(公告)号：US08355462B2
公开(公告)日：2013-01-15
申请号：US12608430
申请日：2009-10-29
申请人： Bassel Beidas , Stan Kay , Neal Becker
发明人： Bassel Beidas , Stan Kay , Neal Becker
IPC分类号： H04L25/03
CPC分类号： H04L27/0008 , H04L27/183 , H04L27/2053 , H04L27/2604 , H04L27/2637 , H04L27/28 , H04L27/367
摘要： The present invention provides a communication system for use with a first source signal and a second source signal. The first source signal is on a first channel and includes M symbols, where M is an integer greater than 1. The second source signal is on a second channel and includes X symbols, where X is an integer greater than 1. The first channel is different from the second channel. The communication system includes a first modulator unit, a second modulator unit and an adder. The first modulator unit can generate a first modulated signal based on the first source signal and includes a first inter-symbol distortion estimating unit and a first stage predistortion unit. The second modulator unit can generate a second modulated signal based on the second source signal and includes a second inter-symbol distortion estimating unit and a predistortion unit. The adder can generate an added signal based on the first modulated signal and the second modulated signal. The first inter-symbol distortion estimating unit can generate a distorted symbol vector based on an estimate of a distortion of the first through (a−1)-th symbols and an estimate of a distortion of the (a+1)-th through M-th symbols, where 1≦a≦M. The first stage predistortion unit is operable to generate a predistorted symbol ã based on the symbol a of the first plurality of symbols and the distorted symbol vector. Further, a receiver unit can cancel interference in the received signals to account for adjacent channel interference.
摘要翻译：本发明提供一种与第一源信号和第二源信号一起使用的通信系统。第一源信号在第一信道上并且包括M个符号，其中M是大于1的整数。第二源信号在第二信道上并且包括X个符号，其中X是大于1的整数。第一信道是不同于第二通道。通信系统包括第一调制器单元，第二调制器单元和加法器。第一调制器单元可以基于第一源信号产生第一调制信号，并且包括第一符号间失真估计单元和第一级预失真单元。第二调制器单元可以基于第二源信号生成第二调制信号，并且包括第二符号间失真估计单元和预失真单元。加法器可以基于第一调制信号和第二调制信号产生相加的信号。第一符号间失真估计单元可以基于第一到第（a-1）个符号的失真的估计和第（a + 1）至第M个符号的失真的估计来生成失真的符号向量第一个符号，其中1＆nlE; a＆nlE; M。第一级预失真单元可操作以基于第一多个符号的符号a和失真的符号向量生成预失真符号ã。此外，接收机单元可以消除接收到的信号中的干扰以解决相邻信道干扰。

4. 发明授权

US07619968B2 Apparatus and method for efficient TDMA bandwidth allocation for TCP/IP satellite-based networks 有权
标题翻译：用于TCP / IP卫星网络的有效TDMA带宽分配的装置和方法
公开(公告)号：US07619968B2
公开(公告)日：2009-11-17
申请号：US10940211
申请日：2004-09-14
申请人： Frank Kelly , Robert Kepley , Stan Kay
发明人： Frank Kelly , Robert Kepley , Stan Kay
IPC分类号： G01R31/08
CPC分类号： H04B7/2125 , H01Q1/1257 , H01Q3/005 , H01Q3/08 , H04B7/18528 , H04B7/18582 , H04B7/18584 , H04B7/18597 , H04B7/212
摘要： A communication system balances message traffic between return channel groups and within the groups, so that the user does not control the specific transmission frequency used. Uplink frequencies and bandwidths for the return channels are set by the system in a return channel control message in the broadcast signal so as to account for system and return channel group loading, and to account for user message backlogs. An initial transmission from a remote user may be made using an ALOHA-type burst signal that provides a message backlog to the control station, and is made on a frequency determined from a randomly weighted, load-based frequency selection process. The system, and not the individual users determine the frequency and channel allocations. For large backlogs or priority users, periodic bandwidth is provided. A method for balancing loads among and between groups of return channels in the communication system includes requesting return channel bandwidth in an uplink message from a remote user to a control station. The uplink message may include a both a backlog indicator and a bandwidth allocation request provided to a Network Operations Center (NOC) which can be used to set the return channel bandwidth and frequency for the remote uplink. A user message is transmitted on the designated return channel frequency using bandwidth allocated in accordance with the backlog indicator and a bandwidth allocation request so that traffic loads are maintained in balance between established return channel frequency groups, and within each return channel frequency group.
摘要翻译：通信系统平衡返回信道组之间和组内的消息业务，使得用户不控制所使用的特定传输频率。返回通道的上行链路频率和带宽由系统在广播信号中的返回信道控制消息中设置，以便考虑系统和返回信道组加载，并考虑用户消息积压。可以使用向控制站提供消息积压的ALOHA型突发信号，并且以从随机加权的基于负载的频率选择过程确定的频率进行来自远程用户的初始传输。系统，而不是个别用户确定频率和频道分配。对于大量积压或优先用户，提供周期性带宽。用于平衡通信系统中的返回信道组之间和之间的负载的方法包括在从远程用户到控制站的上行链路消息中请求返回信道带宽。上行链路消息可以包括提供给网络操作中心（NOC）的积压指示符和带宽分配请求，可以用于设置远程上行链路的返回信道带宽和频率。使用根据积压指示符分配的带宽和带宽分配请求，在指定的返回信道频率上发送用户消息，使得业务负载在已建立的返回信道频率组之间以及在每个返回信道频率组内保持平衡。

5. 发明授权

US07043199B2 Uplink power control system for satellite communication system employing on-board satellite processing and fade estimation 有权
公开(公告)号：US07043199B2
公开(公告)日：2006-05-09
申请号：US09875607
申请日：2001-06-06
申请人： Jerry Dai , Stan Kay , Yezdi Antia , Zhenliang Shi , Anwer Khan , Gaguk Zakaria
发明人： Jerry Dai , Stan Kay , Yezdi Antia , Zhenliang Shi , Anwer Khan , Gaguk Zakaria
IPC分类号： H04B7/185
CPC分类号： H04B7/18543
摘要： An uplink power control system for terminals in a satellite communication system provides closed loop power control using feedback signals generated at a satellite. The satellite performs inter-beam routing of uplink signals from satellite terminals, and processing of uplink signals to generate terminal transmission-specific feedback information that is transmitted in downlink signals to the terminals. The satellite also generates a beacon signal. An uplink power control algorithm at each terminal uses the beacon signal and feedback data to adjust transmit power.

6. 发明申请

US20050030932A1 Apparatus and method for efficient TDMA bandwidth allocation for TCP/IP satellite-based networks 有权
标题翻译：用于TCP / IP卫星网络的有效TDMA带宽分配的装置和方法
公开(公告)号：US20050030932A1
公开(公告)日：2005-02-10
申请号：US10940211
申请日：2004-09-14
申请人： Frank Kelly , Robert Kepley , Stan Kay
发明人： Frank Kelly , Robert Kepley , Stan Kay
IPC分类号： H01Q1/12 , H01Q3/00 , H01Q3/08 , H04B7/185 , H04B7/212 , H04J3/00
CPC分类号： H04B7/2125 , H01Q1/1257 , H01Q3/005 , H01Q3/08 , H04B7/18528 , H04B7/18582 , H04B7/18584 , H04B7/18597 , H04B7/212
摘要： A communication system balances message traffic between return channel groups and within the groups, so that the user does not control the specific transmission frequency used. Uplink frequencies and bandwidths for the return channels are set by the system in a return channel control message in the broadcast signal so as to account for system and return channel group loading, and to account for user message backlogs. An initial transmission from a remote user may be made using an ALOHA-type burst signal that provides a message backlog to the control station, and is made on a frequency determined from a randomly weighted, load-based frequency selection process. The system, and not the individual users determine the frequency and channel allocations. For large backlogs or priority users, periodic bandwidth is provided. A method for balancing loads among and between groups of return channels in the communication system includes requesting return channel bandwidth in an uplink message from a remote user to a control station. The uplink message may include a both a backlog indicator and a bandwidth allocation request provided to a Network Operations Center (NOC) which can be used to set the return channel bandwidth and frequency for the remote uplink. A user message is transmitted on the designated return channel frequency using bandwidth allocated in accordance with the backlog indicator and a bandwidth allocation request so that traffic loads are maintained in balance between established return channel frequency groups, and within each return channel frequency group.
摘要翻译：通信系统平衡返回信道组之间和组内的消息业务，使得用户不控制所使用的特定传输频率。返回通道的上行链路频率和带宽由系统在广播信号中的返回信道控制消息中设置，以便考虑系统和返回信道组加载，并考虑用户消息积压。可以使用向控制站提供消息积压的ALOHA型突发信号，并且以从随机加权的基于负载的频率选择过程确定的频率进行来自远程用户的初始传输。系统，而不是个别用户确定频率和频道分配。对于大量积压或优先用户，提供周期性带宽。用于平衡通信系统中的返回信道组之间和之间的负载的方法包括在从远程用户到控制站的上行链路消息中请求返回信道带宽。上行链路消息可以包括提供给网络操作中心（NOC）的积压指示符和带宽分配请求，可以用于设置远程上行链路的返回信道带宽和频率。使用根据积压指示符分配的带宽和带宽分配请求，在指定的返回信道频率上发送用户消息，使得业务负载在已建立的返回信道频率组之间以及在每个返回信道频率组内保持平衡。

7. 发明申请

US20110103507A1 SYSTEM AND METHOD FOR COMBINED PREDISTORTION AND INTERFERENCE CANCELLATION IN A SATELLITE COMMUNICATIONS SYSTEM 有权
标题翻译：在卫星通信系统中组合预测和干扰消除的系统和方法
公开(公告)号：US20110103507A1
公开(公告)日：2011-05-05
申请号：US12608430
申请日：2009-10-29
申请人： Bassel Beidas , Stan Kay , Neal Becker
发明人： Bassel Beidas , Stan Kay , Neal Becker
IPC分类号： H04B15/00 , H04L25/03
CPC分类号： H04L27/0008 , H04L27/183 , H04L27/2053 , H04L27/2604 , H04L27/2637 , H04L27/28 , H04L27/367
摘要： The present invention provides a communication system for use with a first source signal and a second source signal. The first source signal is on a first channel and includes M symbols, where M is an integer greater than 1. The second source signal is on a second channel and includes X symbols, where X is an integer greater than 1. The first channel is different from the second channel. The communication system includes a first modulator unit, a second modulator unit and an adder. The first modulator unit can generate a first modulated signal based on the first source signal and includes a first inter-symbol distortion estimating unit and a first stage predistortion unit. The second modulator unit can generate a second modulated signal based on the second source signal and includes a second inter-symbol distortion estimating unit and a predistortion unit. The adder can generate an added signal based on the first modulated signal and the second modulated signal. The first inter-symbol distortion estimating unit can generate a distorted symbol vector based on an estimate of a distortion of the first through (a−1)-th symbols and an estimate of a distortion of the (a+1)-th through M-th symbols, where 1≦a≦M. The first stage predistortion unit is operable to generate a predistorted symbol ã based on the symbol a of the first plurality of symbols and the distorted symbol vector. Further, a receiver unit can cancel interference in the received signals to account for adjacent channel interference.
摘要翻译：本发明提供一种与第一源信号和第二源信号一起使用的通信系统。第一源信号在第一信道上并且包括M个符号，其中M是大于1的整数。第二源信号在第二信道上并且包括X个符号，其中X是大于1的整数。第一信道是不同于第二通道。通信系统包括第一调制器单元，第二调制器单元和加法器。第一调制器单元可以基于第一源信号产生第一调制信号，并且包括第一符号间失真估计单元和第一级预失真单元。第二调制器单元可以基于第二源信号生成第二调制信号，并且包括第二符号间失真估计单元和预失真单元。加法器可以基于第一调制信号和第二调制信号产生相加的信号。第一符号间失真估计单元可以基于第一到第（a-1）个符号的失真的估计和第（a + 1）至第M个符号的失真的估计来生成失真的符号向量第一个符号，其中1＆nlE; a＆nlE; M。第一级预失真单元可操作以基于第一多个符号的符号a和失真的符号向量生成预失真符号ã。此外，接收机单元可以消除接收到的信号中的干扰以解决相邻信道干扰。

8. 发明授权

US07342875B2 Space-time coded OFDM system for MMDS applications 有权
标题翻译：用于MMDS应用的时空编码OFDM系统
公开(公告)号：US07342875B2
公开(公告)日：2008-03-11
申请号：US10012066
申请日：2001-11-05
申请人： A. Roger Hammons, Jr. , Hesham El-Gamal , Lin-Nan Lee , Stan Kay , Andrew MacDonald , Jack Rozmaryn , Bassel Beidas
发明人： A. Roger Hammons, Jr. , Hesham El-Gamal , Lin-Nan Lee , Stan Kay , Andrew MacDonald , Jack Rozmaryn , Bassel Beidas
IPC分类号： G01R31/08
CPC分类号： H04L27/2602 , H04L1/0618
摘要： A communications system includes a base station that is configured to transmit a signal that is modulated according to a predetermined modulation scheme and an orthogonal frequency division multiplexing scheme, wherein the signal is encoded using space-frequency coding. The base station includes a plurality of multiple-input multiple-output (MIMO) transceivers. The system includes a terminal that is configured to receive the modulated signal. The above arrangement is particularly applicable to providing multichannel multipoint distribution services (MMDS) over a radio communications system.
摘要翻译：通信系统包括：基站，被配置为发送根据预定调制方案和正交频分复用方案调制的信号，其中，使用空频编码来对信号进行编码。基站包括多个多输入多输出（MIMO）收发器。该系统包括被配置为接收调制信号的终端。上述布置特别适用于通过无线电通信系统提供多信道多点分发业务（MMDS）。

9. 发明申请

US20050088986A1 Systems and methods for distributing data 审中-公开
标题翻译：用于分发数据的系统和方法
公开(公告)号：US20050088986A1
公开(公告)日：2005-04-28
申请号：US10821300
申请日：2004-04-09
申请人： Feng-Wen Sun , Stan Kay
发明人： Feng-Wen Sun , Stan Kay
IPC分类号： H04B7/185 , H04B7/216
CPC分类号： H04B7/18534
摘要： A system for transmitting data packets over an air interface includes logic for generating a number of redundant packets and parity information. The data packets, redundant packets and parity information may then be transmitted to a distribution device that provides error correction codes. The distribution device may then transmit the data to one or more destinations over an air interface.
摘要翻译：用于通过空中接口发送数据分组的系统包括用于产生多个冗余分组和奇偶校验信息的逻辑。然后可以将数据分组，冗余分组和奇偶校验信息发送到提供纠错码的分发设备。分配设备然后可以通过空中接口将数据发送到一个或多个目的地。

10. 发明授权

US08374272B2 Space-time coded OFDM system for MMDS applications 有权
公开(公告)号：US08374272B2
公开(公告)日：2013-02-12
申请号：US12011658
申请日：2008-01-29
申请人： A. Roger Hammons, Jr. , Hesham El-Gamal , Lin-Nan Lee , Stan Kay , Andrew MacDonald , Jack Rozmaryn , Bassel Beidas
发明人： A. Roger Hammons, Jr. , Hesham El-Gamal , Lin-Nan Lee , Stan Kay , Andrew MacDonald , Jack Rozmaryn , Bassel Beidas
IPC分类号： H04B7/02 , H04L1/02
CPC分类号： H04L27/2602 , H04L1/0618
摘要： A communications system includes a base station that is configured to transmit a signal that is modulated according to a predetermined modulation scheme and an orthogonal frequency division multiplexing scheme, wherein the signal is encoded using space-frequency coding. The base station includes a plurality of multiple-input multiple-output (MIMO) transceivers. The system includes a terminal that is configured to receive the modulated signal. The above arrangement is particularly applicable to providing multichannel multipoint distribution services (MMDS) over a radio communications system.

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