公开(公告)号：US07483490B2

公开(公告)日：2009-01-27

申请号：US10346883

申请日：2003-01-17

申请人： Lin-Nan Lee ,  Khalid Karimullah ,  Feng-Wen Sun ,  Kamran Etemad

发明人： Lin-Nan Lee ,  Khalid Karimullah ,  Feng-Wen Sun ,  Kamran Etemad

IPC分类号： H04L27/28 ,  H04K1/10 ,  H04J13/02

CPC分类号： H04J13/0048 ,  H04J11/0023 ,  H04L1/0002 ,  H04W52/26

摘要： A communication system is used to transmit and receive data on a plurality of relatively narrow-band signals and wideband signals. The two signal types share a common electromagnetic spectrum by employing spreading gain and maintaining orthogonality between simultaneously transmitted wideband and narrow-band signals. Signal orthogonality is maintained by selectively choosing orthogonal codes and aligning or spacing a wideband carrier frequency with respect to the narrow-band carrier frequencies in accordance with the ratio of the wideband to the narrow-band chip frequencies. A pilot signal is preferably transmitted contemporaneously with the transmission of the first spread signal, and a control date signal, associated with a plurality of users on the first bandwidth, is transmitted on a common control channel using a single Walsh code that is shared by a plurality of users in a TDMA protocol.

摘要翻译： 通信系统用于在多个相对窄带信号和宽带信号上发送和接收数据。 两种信号类型通过采用扩展增益并保持同时发送的宽带和窄带信号之间的正交性，共享一个共同的电磁频谱。 通过根据宽带与窄带码片频率的比率选择性地选择正交码并且相对于窄带载波频率对准或间隔宽带载波频率来维持信号正交性。 导频信号优选地与第一扩展信号的传输同时发射，并且在公共控制信道上使用与由多个用户共享的单个沃尔什码在一个公共控制信道上发送与第一带宽上的多个用户相关联的控制日期信号 TDMA协议中的多个用户。

公开(公告)号：US06539050B1

公开(公告)日：2003-03-25

申请号：US09104467

申请日：1998-06-25

申请人： Lin-Nan Lee ,  Khalid Karimullah ,  Feng-Wen Sun ,  Kamran Etemad

发明人： Lin-Nan Lee ,  Khalid Karimullah ,  Feng-Wen Sun ,  Kamran Etemad

IPC分类号： H04B169

CPC分类号： H04J13/0048 ,  H04J11/0023 ,  H04L1/0002 ,  H04W52/26

摘要： A communication system is used to transmit and receive a plurality of relatively narrow-band signals and wideband signals. The two signal types share a common electromagnetic spectrum by employing spreading gain and maintaining orthogonality between simultaneously transmitted wideband and narrow-band signals. Signal orthogonality is maintained by selectively choosing orthogonal codes and aligning or spacing a wideband carrier frequency with respect to the narrow-band carrier frequencies in accordance with the ratio of the wideband to the narrow-band chip frequencies. A pilot signal is preferably transmitted contemporaneously with the transmission of the first spreaded signal, and a control data signal, associated with a plurality of users on the first bandwidth, is transmitted on a common control channel using a single Walsh code that is shared by a plurality of users in a TDMA protocol. Further, if the length of the message intended for transmission by the wideband transceivers is below a message length threshold, the message can be transmitted using a common access channel shared by the wideband transceivers. Still further, by adapting the data transmission rate, in response to the data error rate and transmitter power level, the transmission range and/or the data transmission rate can be optimized.

公开(公告)号：US20090213904A1

公开(公告)日：2009-08-27

申请号：US12404251

申请日：2009-03-13

申请人： Feng-Wen Sun ,  Lin-Nan Lee ,  Khalid Karimullah

发明人： Feng-Wen Sun ,  Lin-Nan Lee ,  Khalid Karimullah

IPC分类号： H04B1/69 ,  H04B7/216 ,  H04B1/707

CPC分类号： H04B1/707 ,  H04J13/0048 ,  H04J13/18 ,  H04W52/26

摘要： A system and method for transmitting wideband signals via a radio communication system adapted for transmitting narrow-band signals is described. A base station is used to transmit and receive a plurality of relatively narrow-band and a plurality of relatively wideband signals. The electromagnetic spectrum available to the plurality of narrow-band signals is selectively shared with the electromagnetic spectrum available to the wideband signals by systematically separating the orthogonal codes and the carrier frequencies used for transmission. The prefixes of the orthogonal codes are preferably mutually exclusive and the carrier frequencies are preferably separated by an offset. The offset may be substantially equal to an integer multiple of the narrow-band signal's chip rate. Alternatively, the offset may be substantially equal to an odd multiple of one half the narrow-band signal's chip rate in which case every other bit of the orthogonally encoded data is inverted.

摘要翻译： 描述了经由适于发送窄带信号的无线电通信系统发送宽带信号的系统和方法。 基站用于发送和接收多个相对窄带和多个相对宽带的信号。 可用于多个窄带信号的电磁频谱通过系统地分离用于传输的正交码和载波频率，与宽带信号可用的电磁频谱选择性共享。 正交码的前缀优选地是互斥的，并且载波频率优选地被偏移分开。 偏移量可以基本上等于窄带信号的码片速率的整数倍。 或者，偏移可以基本上等于窄带信号的码片速率的一半的奇数倍，在这种情况下，正交编码数据的每隔一位被反转。

公开(公告)号：US20080285521A1

公开(公告)日：2008-11-20

申请号：US11999561

申请日：2007-12-06

申请人： Feng-Wen Sun ,  Khalid Karimullah ,  Lin-Nan Lee

发明人： Feng-Wen Sun ,  Khalid Karimullah ,  Lin-Nan Lee

IPC分类号： H04J13/00 ,  H04Q7/00

CPC分类号： H04J13/004 ,  H04J13/0077 ,  H04W52/26

摘要： A method and apparatus for encoding data for transmission in a communication system provides increased efficiency in bandwidth utilization through higher data rates, lower error rates, lower power levels, and/or increased capacity. A set of orthogonal codes is partitioned into subsets. The data to be transmitted is partitioned into packets of bit sequences, each of which is mapped to an orthogonal code in an assigned subset. The number of members in a particular subset is determined by the relative transmission requirements of the data signal the subset will be used to encode.

摘要翻译： 用于在通信系统中对用于传输的数据进行编码的方法和装置通过更高的数据速率，更低的误码率，更低的功率水平和/或增加的容量来提高带宽利用率。 一组正交码被划分成子集。 要发送的数据被划分成比特序列的分组，每个比特序列被映射到所分配的子集中的正交码。 特定子集中的成员数量由子组将用于编码的数据信号的相对传输要求确定。

公开(公告)号：US07505440B2

公开(公告)日：2009-03-17

申请号：US12009275

申请日：2008-01-17

申请人： Feng-Wen Sun ,  Lin-Nan Lee ,  Khalid Karimullah

发明人： Feng-Wen Sun ,  Lin-Nan Lee ,  Khalid Karimullah

IPC分类号： H04B7/216 ,  H04B1/02 ,  H04J11/00 ,  H04J13/00 ,  H04Q7/00

CPC分类号： H04B1/707 ,  H04J13/0048 ,  H04J13/18 ,  H04W52/26

摘要： A system and method for transmitting wideband signals via a radio communication system adapted for transmitting narrow-band signals is described. A base station is used to transmit and receive a plurality of relatively narrow-band and a plurality of relatively wideband signals. The electromagnetic spectrum available to the plurality of narrow-band signals is selectively shared with the electromagnetic spectrum available to the wideband signals by systematically separating the orthogonal codes and the carrier frequencies used for transmission. The prefixes of the orthogonal codes are preferably mutually exclusive and the carrier frequencies are preferably separated by an offset. The offset may be substantially equal to an integer multiple of the narrow-band signal's chip rate. Alternatively, the offset may be substantially equal to an odd multiple of one half the narrow-band signal's chip rate in which case every other bit of the orthogonally encoded data is inverted.

摘要翻译： 描述了经由适于发送窄带信号的无线电通信系统发送宽带信号的系统和方法。 基站用于发送和接收多个相对窄带和多个相对宽带的信号。 可用于多个窄带信号的电磁频谱通过系统地分离用于传输的正交码和载波频率，与宽带信号可用的电磁频谱选择性共享。 正交码的前缀优选地是互斥的，并且载波频率优选地被偏移分开。 偏移量可以基本上等于窄带信号的码片速率的整数倍。 或者，偏移可以基本上等于窄带信号的码片速率的一半的奇数倍，在这种情况下，正交编码数据的每隔一位被反转。

公开(公告)号：US09467200B2

公开(公告)日：2016-10-11

申请号：US12404251

申请日：2009-03-13

申请人： Feng-Wen Sun ,  Lin-Nan Lee ,  Khalid Karimullah

发明人： Feng-Wen Sun ,  Lin-Nan Lee ,  Khalid Karimullah

IPC分类号： H04B1/707 ,  H04J13/00 ,  H04J13/18 ,  H04W52/26

CPC分类号： H04B1/707 ,  H04J13/0048 ,  H04J13/18 ,  H04W52/26

摘要： A system and method for transmitting wideband signals via a radio communication system adapted for transmitting narrow-band signals is described. A base station is used to transmit and receive a plurality of relatively narrow-band and a plurality of relatively wideband signals. The electromagnetic spectrum available to the plurality of narrow-band signals is selectively shared with the electromagnetic spectrum available to the wideband signals by systematically separating the orthogonal codes and the carrier frequencies used for transmission. The prefixes of the orthogonal codes are preferably mutually exclusive and the carrier frequencies are preferably separated by an offset. The offset may be substantially equal to an integer multiple of the narrow-band signal's chip rate. Alternatively, the offset may be substantially equal to an odd multiple of one half the narrow-band signal's chip rate in which case every other bit of the orthogonally encoded data is inverted.

公开(公告)号：US08179781B2

公开(公告)日：2012-05-15

申请号：US11999561

申请日：2007-12-06

申请人： Feng-Wen Sun ,  Khalid Karimullah ,  Lin-Nan Lee

发明人： Feng-Wen Sun ,  Khalid Karimullah ,  Lin-Nan Lee

IPC分类号： H04J11/00 ,  H04B3/20

CPC分类号： H04J13/004 ,  H04J13/0077 ,  H04W52/26

摘要： A method and apparatus for encoding data for transmission in a communication system provides increased efficiency in bandwidth utilization through higher data rates, lower error rates, lower power levels, and/or increased capacity. A set of orthogonal codes is partitioned into subsets. The data to be transmitted is partitioned into packets of bit sequences, each of which is mapped to an orthogonal code in an assigned subset. The number of members in a particular subset is determined by the relative transmission requirements of the data signal the subset will be used to encode.

摘要翻译： 用于在通信系统中对用于传输的数据进行编码的方法和装置通过更高的数据速率，更低的误码率，更低的功率水平和/或增加的容量来提高带宽利用率。 一组正交码被划分成子集。 要发送的数据被划分成比特序列的分组，每个比特序列被映射到所分配的子集中的正交码。 特定子集中的成员数量由子组将用于编码的数据信号的相对传输要求确定。

公开(公告)号：US20080137766A1

公开(公告)日：2008-06-12

申请号：US12009275

申请日：2008-01-17

申请人： Feng-Wen Sun ,  Lin-Nan Lee ,  Khalid Karimullah

发明人： Feng-Wen Sun ,  Lin-Nan Lee ,  Khalid Karimullah

IPC分类号： H04L23/02

CPC分类号： H04B1/707 ,  H04J13/0048 ,  H04J13/18 ,  H04W52/26

摘要： A system and method for transmitting wideband signals via a radio communication system adapted for transmitting narrow-band signals is described. A base station is used to transmit and receive a plurality of relatively narrow-band and a plurality of relatively wideband signals. The electromagnetic spectrum available to the plurality of narrow-band signals is selectively shared with the electromagnetic spectrum available to the wideband signals by systematically separating the orthogonal codes and the carrier frequencies used for transmission. The prefixes of the orthogonal codes are preferably mutually exclusive and the carrier frequencies are preferably separated by an offset. The offset may be substantially equal to an integer multiple of the narrow-band signal's chip rate. Alternatively, the offset may be substantially equal to an odd multiple of one half the narrow-band signal's chip rate in which case every other bit of the orthogonally encoded data is inverted.

摘要翻译： 描述了经由适于发送窄带信号的无线电通信系统发送宽带信号的系统和方法。 基站用于发送和接收多个相对窄带和多个相对宽带的信号。 可用于多个窄带信号的电磁频谱通过系统地分离用于传输的正交码和载波频率，与宽带信号可用的电磁频谱选择性共享。 正交码的前缀优选地是互斥的，并且载波频率优选地被偏移分开。 偏移量可以基本上等于窄带信号的码片速率的整数倍。 或者，偏移可以基本上等于窄带信号的码片速率的一半的奇数倍，在这种情况下，正交编码数据的每隔一位被反转。

公开(公告)号：US06940809B2

公开(公告)日：2005-09-06

申请号：US10799868

申请日：2004-03-12

申请人： Feng-Wen Sun ,  Lin-Nan Lee ,  Khalid Karimullah

发明人： Feng-Wen Sun ,  Lin-Nan Lee ,  Khalid Karimullah

IPC分类号： H04L1/18 ,  H04Q7/24 ,  H04J1/16

CPC分类号： H04L1/1812

摘要： A system and method where a data transmitter retransmits data frames to a receiver for combination with previously transmitted data frames that were received with errors to increase gain at the receiver. The data transmitter receives a retransmission request from the receiver and retransmits a particular data frame without a signaling message. The receiver compares the retransmitted data frame to other data frames stored in a buffer to determine the likelihood of a match between the transmitted data frame and a buffered data frame. When the likelihood of a match exceeds at least one predetermined threshold, the receiver combines the retransmitted data frame with the matching data frame. If the likelihood of a match is below any of the predetermined thresholds, the receiver stores either the combined data frame, or the retransmitted and matching data frame, depending on which threshold is not exceeded, and sends another retransmission request.

摘要翻译： 一种系统和方法，其中数据发射机向接收机重发数据帧以与先前发送的数据帧组合，以及接收到错误的数据帧以增加接收机的增益。 数据发射机接收来自接收机的重传请求，并重发特定的数据帧而不发送信令消息。 接收机将重传的数据帧与存储在缓冲器中的其他数据帧进行比较，以确定发送的数据帧与缓冲的数据帧之间的匹配的可能性。 当匹配的可能性超过至少一个预定阈值时，接收机将重传的数据帧与匹配数据帧组合。 如果匹配的可能性低于任何预定阈值，则接收机根据不超过哪个阈值来存储组合数据帧或重传和匹配数据帧，并发送另一个重传请求。

公开(公告)号：US06741581B1

公开(公告)日：2004-05-25

申请号：US09399839

申请日：1999-09-21

申请人： Feng-Wen Sun ,  Lin-Nan Lee ,  Khalid Karimullah

发明人： Feng-Wen Sun ,  Lin-Nan Lee ,  Khalid Karimullah

IPC分类号： H04L116

CPC分类号： H04L1/1812

摘要： A system and method for retransmitting data frames, which were inadequately received by a receiver, back to the receiver to increase receiver gain. Upon receiving a retransmission request from the receiver, the data transmitter retransmits a particular data frame to the receiver without transmitting a signaling message, and the receiver compares it to other data frames stored in a buffer. When a match is believed to exist, the receiver combines the retransmitted data frame with the matching data frame. Based on the result of a cyclic redundant code (CRC) check performed on the combined data frame, the receiver either provides the combined data frame to a higher layer in the receiver, or stores either the combined data frame, or the retransmitted and potentially matching data frame, in the buffer, depending on a confidence in the potential match, and sends another retransmission request to the transmitter to again retransmit the data frame and the above process is repeated.

摘要翻译： 一种用于重传数据帧的系统和方法，其被接收机不足以接收到接收机以增加接收机增益。 在从接收机接收到重传请求时，数据发射机在不发送信令消息的情况下向接收机重传特定数据帧，并且接收机将其与存储在缓冲器中的其它数据帧进行比较。 当相信存在匹配时，接收器将重传的数据帧与匹配的数据帧组合。 基于在组合数据帧上执行的循环冗余码（CRC）检查的结果，接收机将组合数据帧提供给接收机中的较高层，或者存储组合数据帧，或存储组合数据帧，或者重传和潜在匹配 数据帧在缓冲器中取决于潜在匹配的置信度，并且向发送器发送另一个重发请求以再次重发数据帧，并重复上述处理。