-
公开(公告)号：US20070263667A1
公开(公告)日：2007-11-15
申请号：US11878283
申请日：2007-07-23
IPC分类号： H04B3/10
CPC分类号： H04L5/0048 , H04L5/0007 , H04L25/0226 , H04L25/0228 , H04L27/2613 , H04L27/2655 , H04L27/364 , H04L27/3863 , H04L2027/0016
摘要： A transmitter (102) generates a first set of data symbols and a first pilot symbol (601) at a first time, and a second set of data symbols and a second pilot symbol (602) at a different, second time. The first (601) and second (602) pilot. symbols are each represented by first (701) and second (702) pilot carriers, respectively, located at first (703) and second (704) predetermined sample frequencies, respectively, in a channel bandwidth. For the first pilot symbol (601), the first (701) and second (702) pilot carriers have first and second predetermined values, respectively. For the second pilot symbol (602), the first (701) and second (702) pilot carriers have third and fourth predetermined values, respectively. A receiver (104) measures the first, second, fourth and third predetermined values responsive to receiving the first (601) and second (602) pilot symbols to determine first, second, third and fourth estimates of channel distortion, respectively, for compensating and recovering the first and the second sets of data symbols.
摘要翻译： 发射机（102）在不同的第二时间产生第一组数据符号和第一导频符号（601），第二组数据符号和第二导频符号（602）。 第一（601）和第二（602）飞行员。 符号分别由分别位于信道带宽中的第一（703）和第（704）个预定采样频率的第一（701）和第二（702）导频载波表示。 对于第一导频符号（601），第一（701）和第二（702）导频载波分别具有第一和第二预定值。 对于第二导频符号（602），第一（701）和第二（702）导频载波分别具有第三和第四预定值。 接收器（104）响应于接收到第一（601）和第二（602）导频符号来测量第一，第二，第四和第三预定值，以分别确定信道失真的第一，第二，第三和第四估计，用于补偿和 恢复第一和第二组数据符号。
-
公开(公告)号：US07869538B2
公开(公告)日：2011-01-11
申请号：US11878283
申请日：2007-07-23
IPC分类号： H04L27/00
CPC分类号： H04L5/0048 , H04L5/0007 , H04L25/0226 , H04L25/0228 , H04L27/2613 , H04L27/2655 , H04L27/364 , H04L27/3863 , H04L2027/0016
摘要： A transmitter (102) generates a first set of data symbols and a first pilot symbol (601) at a first time, and a second set of data symbols and a second pilot symbol (602) at a different, second time. The first (601) and second (602) pilot. symbols are each represented by first (701) and second (702) pilot carriers, respectively, located at first (703) and second (704) predetermined sample frequencies, respectively, in a channel bandwidth. For the first pilot symbol (601), the first (701) and second (702) pilot carriers have first and second predetermined values, respectively. For the second pilot symbol (602), the first (701) and second (702) pilot carriers have third and fourth predetermined values, respectively. A receiver (104) measures the first, second, fourth and third predetermined values responsive to receiving the first (601) and second (602) pilot symbols to determine first, second, third and fourth estimates of channel distortion, respectively, for compensating and recovering the first and the second sets of data symbols.
摘要翻译： 发射机（102）在不同的第二时间产生第一组数据符号和第一导频符号（601），第二组数据符号和第二导频符号（602）。 第一（601）和第二（602）飞行员。 符号分别由分别位于信道带宽中的第一（703）和第（704）个预定采样频率的第一（701）和第二（702）导频载波表示。 对于第一导频符号（601），第一（701）和第二（702）导频载波分别具有第一和第二预定值。 对于第二导频符号（602），第一（701）和第二（702）导频载波分别具有第三和第四预定值。 接收器（104）响应于接收到第一（601）和第二（602）导频符号来测量第一，第二，第四和第三预定值，以分别确定信道失真的第一，第二，第三和第四估计，用于补偿和 恢复第一和第二组数据符号。
-
3.发明授权Method and system for detecting and classifying the modulation of unknown analog and digital telecommunications signals 失效用于检测和分类未知模拟和数字电信信号调制的方法和系统公开(公告)号：US07428270B1
公开(公告)日：2008-09-23
申请号：US09504676
申请日：2000-02-15
申请人： Christian Dubuc , Daniel Boudreau
发明人： Christian Dubuc , Daniel Boudreau
CPC分类号： G01R29/06 , H04L27/0012
摘要： Disclosed is a unique system and method for recognizing the type of modulation embedded in an unknown complex baseband signal, comprising a receiver section for extracting the complex baseband signal from a modulated signal having a carrier frequency, and comprising an orderly series of signal processing functions for (a) estimating the bandwidth of the unknown signal, (b) removing the out-of-band noise and correcting gross carrier frequency errors, (c) discriminating between constant envelope and irregular envelope signals, (d) estimating and correcting residual carrier frequency errors, (e) classifying a constant envelope signal into one of the following modulation formats: {Continuous Wave (CW), Frequency Modulation (FM), Frequency Shift Keying (FSK)}, and (f) classifying an irregular envelope signal into one of the following modulation formats: {Amplitude Modulation (AM), Double Sideband Suppressed Carrier (DSB-SC), Binary Shift Keying (BPSK), Quaternary Phase Shift Keying (QPSK), π/4-shifted QPSK, M-ary PSK (MPSK), and OTHER classes}.
摘要翻译： 公开了一种用于识别嵌入在未知复基带信号中的调制类型的独特系统和方法，包括：用于从具有载波频率的调制信号中提取复基带信号的接收机部分，并且包括有序的一系列信号处理功能， （a）估计未知信号的带宽，（b）去除带外噪声和校正总载波频率误差，（c）区分恒定包络和不规则包络信号，（d）估计和校正残余载波频率 误差，（e）将恒定包络信号分类成以下调制格式之一：{连续波（CW），调频（FM），频移键控（FSK）}）和（f）将不规则包络信号分类成一个 以下调制格式：调幅调幅（AM），双边带抑制载波（DSB-SC），二进制移位键控（BPSK），第四相移键控（QPSK） pi / 4位移QPSK，M-ary PSK（MPSK）和OTHER类}。
-
公开(公告)号：US08213543B2
公开(公告)日：2012-07-03
申请号：US12776757
申请日：2010-05-10
CPC分类号： H04L5/0048 , H04L5/0007 , H04L25/0226 , H04L25/0228 , H04L27/2613 , H04L27/2655 , H04L27/364 , H04L27/3863 , H04L2027/0016
摘要： A transmitter (102) generates a first set of data symbols and a first pilot symbol (601) at a first time, and a second set of data symbols and a second pilot symbol (602) at a different, second time. The first (601) and second (602) pilot symbols are each represented by first (701) and second (702) pilot carriers, respectively, located at first (703) and second (704) predetermined sample frequencies, respectively, in a channel bandwidth. For the first pilot symbol (601), the first (701) and second (702) pilot carriers have first and second predetermined values, respectively. For the second pilot symbol (602), the first (701) and second (702) pilot carriers have third and fourth predetermined values, respectively. A receiver (104) measures the first, second, fourth and third predetermined values responsive to receiving the first (601) and second (602) pilot symbols to determine first, second, third and fourth estimates of channel distortion, respectively, for compensating and recovering the first and the second sets of data symbols.
摘要翻译： 发射机（102）在不同的第二时间产生第一组数据符号和第一导频符号（601），第二组数据符号和第二导频符号（602）。 第一（601）和第二（602）导频符号分别由分别位于信道中的第一（703）和第二（704）预定采样频率的第一（701）和第二（702）导频载波， 带宽。 对于第一导频符号（601），第一（701）和第二（702）导频载波分别具有第一和第二预定值。 对于第二导频符号（602），第一（701）和第二（702）导频载波分别具有第三和第四预定值。 接收器（104）响应于接收到第一（601）和第二（602）导频符号来测量第一，第二，第四和第三预定值，以分别确定信道失真的第一，第二，第三和第四估计，用于补偿和 恢复第一和第二组数据符号。
-
公开(公告)号：US07251291B1
公开(公告)日：2007-07-31
申请号：US10321699
申请日：2002-12-18
CPC分类号： H04L5/0048 , H04L5/0007 , H04L25/0226 , H04L25/0228 , H04L27/2613 , H04L27/2655 , H04L27/364 , H04L27/3863 , H04L2027/0016
摘要： A transmitter (102) generates a first set of data symbols and a first pilot symbol (601) at a first time, and a second set of data symbols and a second pilot symbol (602) at a different, second time. The first (601) and second (602) pilot symbols are each represented by first (701) and second (702) pilot carriers, respectively, located at first (703) and second (704) predetermined sample frequencies, respectively, in a channel bandwidth. For the first pilot symbol (601), the first (701) and second (702) pilot carriers have first and second predetermined values, respectively. For the second pilot symbol (602), the first (701) and second (702) pilot carriers have third and fourth predetermined values, respectively. A receiver (104) measures the first, second, fourth and third predetermined values responsive to receiving the first (601) and second (602) pilot symbols to determine first, second, third and fourth estimates of channel distortion, respectively, for compensating and recovering the first and the second sets of data symbols.
摘要翻译： 发射机（102）在不同的第二时间产生第一组数据符号和第一导频符号（601），第二组数据符号和第二导频符号（602）。 第一（601）和第二（602）导频符号分别由分别位于信道中的第一（703）和第二（704）预定采样频率的第一（701）和第二（702）导频载波， 带宽。 对于第一导频符号（601），第一（701）和第二（702）导频载波分别具有第一和第二预定值。 对于第二导频符号（602），第一（701）和第二（702）导频载波分别具有第三和第四预定值。 接收器（104）响应于接收到第一（601）和第二（602）导频符号来测量第一，第二，第四和第三预定值，以分别确定信道失真的第一，第二，第三和第四估计，用于补偿和 恢复第一和第二组数据符号。
-
公开(公告)号：US07486735B2
公开(公告)日：2009-02-03
申请号：US10787700
申请日：2004-02-26
申请人： Christian Dubuc , Colin Brown , Daniel Boudreau
发明人： Christian Dubuc , Colin Brown , Daniel Boudreau
CPC分类号： H04L27/2608
摘要： The present invention divides the available sub-carriers in an OFDM symbol window into N groups of sub-carriers wherein each group will be associated with sub-bands. In one embodiment, the sub-carriers in a group are spread throughout the range of sub-carriers to improve frequency diversity, and the sub-carriers assigned to any one group are separated by a constant offset. The sub-carriers in the group may be offset by an integer power of two. Within each group, sub-bands are defined using frequency hopping patterns among sub-carriers in the group from one OFDM symbol window to another. A pseudo-random pattern may be employed for sub-carrier mapping from one OFDM symbol window to the next to effectively distribute the sub-bands across the selected band of sub-carriers for the group.
摘要翻译： 本发明将OFDM符号窗口中的可用子载波划分为N组子载波，其中每个组将与子带相关联。 在一个实施例中，组中的子载波在整个子载波范围内扩展以改善频率分集，并且分配给任何一个组的副载波被分离一个恒定的偏移量。 组中的子载波可以被两个整数倍的偏移量。 在每个组内，使用从一个OFDM符号窗口到另一个OFDM符号窗口的组中的子载波之间的跳频模式来定义子带。 可以采用伪随机模式用于从一个OFDM符号窗口到下一个OFDM符号窗口的子载波映射，以有效地分布跨所选择的子载波频带的子带。
-
公开(公告)号：US20090074098A1
公开(公告)日：2009-03-19
申请号：US12292159
申请日：2008-11-13
申请人： Shiquan Wu , Wen Tong , Peiying Zhu , Ming Jia , Hua Xu , Daniel Boudreau , Jianming Wu , Mo-Han Fong , Keith R. Edwards
发明人： Shiquan Wu , Wen Tong , Peiying Zhu , Ming Jia , Hua Xu , Daniel Boudreau , Jianming Wu , Mo-Han Fong , Keith R. Edwards
CPC分类号： H04B1/707 , H04B2201/70701 , H04L5/026
摘要： Systems and methods of combining OFDM and CDMA signals are provided. An OFDM packet data channel is overlaid over CDMA transmissions. The channel is scheduled slotwise between multiple users. In some embodiments, there is a CDMA packet data channel which is scheduled together with the OFDM packet data channel.
摘要翻译： 提供了组合OFDM和CDMA信号的系统和方法。 OFDM分组数据信道被覆盖在CDMA传输上。 频道在多个用户之间调度。 在一些实施例中，存在与OFDM分组数据信道一起调度的CDMA分组数据信道。
-
公开(公告)号：US09125061B2
公开(公告)日：2015-09-01
申请号：US10400882
申请日：2003-03-28
申请人： Jianming Wu , Wen Tong , Daniel Boudreau
发明人： Jianming Wu , Wen Tong , Daniel Boudreau
CPC分类号： H04W16/12 , H04W72/0453 , H04W72/1257
摘要： A method of allocating bandwidth is provided which involves for each sector of a plurality of sectors in a cell, using a respective subset of a total bandwidth; wherein for any two adjacent sectors, the respective subsets only partially overlap. A scheduling method is provided which involves for each sector, scheduling users for transmission on the respective subset of the total bandwidth by: for a given transmitter, allocating a respective fraction of capacity associated with the available bandwidth to each of at least two users selected from a plurality of users by performing an optimization for a selected scheduler design, the optimization selecting the at least two users and the optimization determining for each user the respective fraction of capacity; generating and transmitting a signal in which each of the at least two users has the respective fraction of capacity.
-
公开(公告)号：US08045936B2
公开(公告)日：2011-10-25
申请号：US12000162
申请日：2007-12-10
申请人： Shiquan Wu , Wen Tong , Peiying Zhu , Ming Jia , Hua Xu , Daniel Boudreau , Jianming Wu , Mo-Han Fong , Keith R. Edwards
发明人： Shiquan Wu , Wen Tong , Peiying Zhu , Ming Jia , Hua Xu , Daniel Boudreau , Jianming Wu , Mo-Han Fong , Keith R. Edwards
CPC分类号： H04B1/707 , H04B2201/70701 , H04L5/026
摘要： Systems and methods of combining OFDM and CDMA signals are provided. An OFDM packet data channel is overlaid over CDMA transmissions. The channel is scheduled slotwise between multiple users. In some embodiments, there is a CDMA packet data channel which is scheduled together with the OFDM packet data channel.
摘要翻译： 提供了组合OFDM和CDMA信号的系统和方法。 OFDM分组数据信道被覆盖在CDMA传输上。 频道在多个用户之间调度。 在一些实施例中，存在与OFDM分组数据信道一起调度的CDMA分组数据信道。
-
公开(公告)号：US08023905B2
公开(公告)日：2011-09-20
申请号：US12292159
申请日：2008-11-13
申请人： Shiquan Wu , Wen Tong , Peiying Zhu , Ming Jia , Hua Xu , Daniel Boudreau , Jianming Wu , Mo-Han Fong , Keith Edwards
发明人： Shiquan Wu , Wen Tong , Peiying Zhu , Ming Jia , Hua Xu , Daniel Boudreau , Jianming Wu , Mo-Han Fong , Keith Edwards
CPC分类号： H04B1/707 , H04B2201/70701 , H04L5/026
摘要： Systems and methods of combining OFDM and CDMA signals are provided. An OFDM packet data channel is overlaid over CDMA transmissions. The channel is scheduled slotwise between multiple users. In some embodiments, there is a CDMA packet data channel which is scheduled together with the OFDM packet data channel.
摘要翻译： 提供了组合OFDM和CDMA信号的系统和方法。 OFDM分组数据信道被覆盖在CDMA传输上。 频道在多个用户之间调度。 在一些实施例中，存在与OFDM分组数据信道一起调度的CDMA分组数据信道。
-
-
-
-
-
-
-
-
-
搜索结果
16 条记录 (耗时 0.017 秒)
