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1. 发明申请

US20090268710A1 UPLINK SYNCHRONIZATION WITHOUT PERIODIC RANGING IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：在通信系统中没有定期范围的上行同步
公开(公告)号：US20090268710A1
公开(公告)日：2009-10-29
申请号：US12107858
申请日：2008-04-23
申请人： Xiaoyong Yu , Michael N. Kloos , Alan P. Rottinghaus
发明人： Xiaoyong Yu , Michael N. Kloos , Alan P. Rottinghaus
IPC分类号： H04J3/06 , H04J11/00
CPC分类号： H04W56/0005
摘要： An apparatus and method for uplink synchronization without periodic ranging in a communication system includes a first step (700) of detecting embedded pilot signals in data traffic from mobile stations. A next step (702) includes estimating a time error by calculating a pilot signal phase difference across a tone index within the same OFDM symbol. A next step (704) includes estimating a frequency error by calculating a pilot signal phase difference across multiple OFDM symbols within a tone. A next step (706) includes determining if at least one of the estimated time and frequency errors exceed a predetermined threshold. A next step (708) includes sending synchronization information to at least one mobile station for the mobile station to synchronize (710) its transmit signals in response to at least one of the time and frequency error.
摘要翻译：在通信系统中没有周期性测距的用于上行链路同步的装置和方法包括：检测来自移动站的数据业务中的嵌入式导频信号的第一步骤（700）。下一步骤（702）包括通过计算同一OFDM符号内的音调索引上的导频信号相位差来估计时间误差。下一步骤（704）包括通过计算音调内的多个OFDM符号之间的导频信号相位差来估计频率误差。下一步骤（706）包括确定估计的时间和频率误差中的至少一个是否超过预定阈值。下一步骤（708）包括向至少一个移动台发送同步信息，以使移动台响应于时间和频率误差中的至少一个来同步（710）其发射信号。

2. 发明申请

US20100296438A1 UP-LINK SDMA RECEIVER FOR WiMAX 有权
标题翻译：用于WiMAX的UP-LINK SDMA接收器
公开(公告)号：US20100296438A1
公开(公告)日：2010-11-25
申请号：US12469306
申请日：2009-05-20
申请人： Xiaoyong Yu , Alan P. Rottinghaus , Timothy J. Wilson
发明人： Xiaoyong Yu , Alan P. Rottinghaus , Timothy J. Wilson
IPC分类号： H04W72/00
CPC分类号： H04L27/2662 , H04L5/0051 , H04L25/0224 , H04L27/2675
摘要： A method, a system and a receiver device provide timing and frequency correction in a spatial division multiple access (SDMA) system. A timing and frequency correction (TFC) logic/utility obtains a timing error estimate by using pilot symbols on a slot of six tiles. The TFC logic estimates the timing error based on pilot phase differences between unique pairs of tiles when the frequency separation of the tiles is less than a threshold value. When none of the unique pairs of tiles satisfies the threshold value, the TFC logic estimates timing error based on an exhaustive search for each candidate phase error value. The TFC logic performs timing error correction via a timing error estimate based on pilots from the symbols received on each antenna. The TFC logic performs inexplicit frequency error correction according to phase differences based on relative symbol indices.
摘要翻译：方法，系统和接收机设备在空分多址（SDMA）系统中提供定时和频率校正。定时和频率校正（TFC）逻辑/效用通过在六个瓦片的时隙上使用导频符号来获得定时误差估计。当块的频率分离小于阈值时，TFC逻辑基于独特的瓦片对之间的导频相位差来估计定时误差。当没有唯一的瓦片对满足阈值时，TFC逻辑基于对每个候选相位误差值的详尽搜索来估计定时误差。 TFC逻辑通过基于在每个天线上接收到的符号的导频的定时误差估计来执行定时误差校正。 TFC逻辑根据相对符号索引的相位差执行奇异性频率误差校正。

3. 发明授权

US07603092B2 Estimation of CINR and RSSI in a wireless communication system 有权
标题翻译：无线通信系统中CINR和RSSI的估计
公开(公告)号：US07603092B2
公开(公告)日：2009-10-13
申请号：US11455373
申请日：2006-06-19
申请人： Xiaoyong Yu , Alan P. Rottinghaus , Jian J. Wu
发明人： Xiaoyong Yu , Alan P. Rottinghaus , Jian J. Wu
IPC分类号： H04B17/00
CPC分类号： H04L27/2647 , H04B17/318 , H04B17/336
摘要： A method for selecting at least one operating parameter of a communication system (100). The method can include determining a receive signal strength indicator (RSSI) for a communication signal (330). An intermediate value (D) for the communication signal can be determined based on, at least in part, a received value (ri) of at least one known datum, a predetermined value (pi) of the known datum and a channel estimate ({tilde over (h)}i). Further, a carrier to interference and noise ratio (CINR) can be estimated based on, at least in part, the RSSI and the intermediate value. The operating parameter can be selected based on, at least in part, the estimated CINR.
摘要翻译：一种用于选择通信系统（100）的至少一个操作参数的方法。该方法可以包括确定通信信号（330）的接收信号强度指示符（RSSI）。可以至少部分地基于至少一个已知数据的接收值（ri），已知数据的预定值（pi）和信道估计（{ （h）} i）。此外，可以至少部分地基于RSSI和中间值来估计载波与干扰和噪声比（CINR）。可以至少部分地基于估计的CINR来选择操作参数。

4. 发明申请

US20070293176A1 Estimation of CINR and RSSI in a wireless communication system 有权
标题翻译：无线通信系统中CINR和RSSI的估计
公开(公告)号：US20070293176A1
公开(公告)日：2007-12-20
申请号：US11455373
申请日：2006-06-19
申请人： Xiaoyong Yu , Alan P. Rottinghaus , Jian J. Wu
发明人： Xiaoyong Yu , Alan P. Rottinghaus , Jian J. Wu
IPC分类号： H04B17/00
CPC分类号： H04L27/2647 , H04B17/318 , H04B17/336
摘要： A method for selecting at least one operating parameter of a communication system (100). The method can include determining a receive signal strength indicator (RSSI) for a communication signal (330). An intermediate value (D) for the communication signal can be determined based on, at least in part, a received value (ri) of at least one known datum, a predetermined value (pi) of the known datum and a channel estimate ({tilde over (h)}i). Further, a carrier to interference and noise ratio (CINR) can be estimated based on, at least in part, the RSSI and the intermediate value. The operating parameter can be selected based on, at least in part, the estimated CINR.
摘要翻译：一种用于选择通信系统（100）的至少一个操作参数的方法。该方法可以包括确定通信信号（330）的接收信号强度指示符（RSSI）。可以至少部分地基于至少一个已知基准的接收值（r SUB）来确定用于通信信号的中间值（D），预定值（p < 已知数据的信号估计（h i i i i）。此外，可以至少部分地基于RSSI和中间值来估计载波与干扰和噪声比（CINR）。可以至少部分地基于估计的CINR来选择操作参数。

5. 发明授权

US08199845B2 Up-link SDMA receiver for WiMAX 有权
标题翻译：用于WiMAX的上行SDMA接收机
公开(公告)号：US08199845B2
公开(公告)日：2012-06-12
申请号：US12469306
申请日：2009-05-20
申请人： Xiaoyong Yu , Alan P. Rottinghaus , Timothy J. Wilson
发明人： Xiaoyong Yu , Alan P. Rottinghaus , Timothy J. Wilson
IPC分类号： H04B7/02 , H04B1/10 , H04B1/26 , H04B1/38 , H04L1/02 , H04L27/28 , H04L27/06 , H04K1/10 , H04J11/00 , H04W4/00 , H04N7/173
CPC分类号： H04L27/2662 , H04L5/0051 , H04L25/0224 , H04L27/2675
摘要： A method, a system and a receiver device provide timing and frequency correction in a spatial division multiple access (SDMA) system. A timing and frequency correction (TFC) logic/utility obtains a timing error estimate by using pilot symbols on a slot of six tiles. The TFC logic estimates the timing error based on pilot phase differences between unique pairs of tiles when the frequency separation of the tiles is less than a threshold value. When none of the unique pairs of tiles satisfies the threshold value, the TFC logic estimates timing error based on an exhaustive search for each candidate phase error value. The TFC logic performs timing error correction via a timing error estimate based on pilots from the symbols received on each antenna. The TFC logic performs inexplicit frequency error correction according to phase differences based on relative symbol indices.
摘要翻译：方法，系统和接收机设备在空分多址（SDMA）系统中提供定时和频率校正。定时和频率校正（TFC）逻辑/效用通过在六个瓦片的时隙上使用导频符号来获得定时误差估计。当块的频率分离小于阈值时，TFC逻辑基于独特的瓦片对之间的导频相位差来估计定时误差。当没有唯一的瓦片对满足阈值时，TFC逻辑基于对每个候选相位误差值的详尽搜索来估计定时误差。 TFC逻辑通过基于在每个天线上接收到的符号的导频的定时误差估计来执行定时误差校正。 TFC逻辑根据相对符号索引的相位差执行奇异性频率误差校正。

6. 发明授权

US07646704B2 Method and apparatus for spur cancellation in an orthogonal frequency division multiplexing communication system 有权
标题翻译：在正交频分复用通信系统中用于杂散消除的方法和装置
公开(公告)号：US07646704B2
公开(公告)日：2010-01-12
申请号：US11554788
申请日：2006-10-31
申请人： Xiaoyong Yu , Thomas J. Kovarik , Alan P. Rottinghaus
发明人： Xiaoyong Yu , Thomas J. Kovarik , Alan P. Rottinghaus
IPC分类号： H04J11/00
CPC分类号： H04L27/2655 , H04L25/03159
摘要： A communication device is provided that is capable of operating in an OFDM or communication system and that provides for cancellation of in-band spurs. The communication device identifies a bin of multiple bins associated with an output of an inverse transformer and comprising a spur and estimates one or more spur phase parameters and a spur amplitude in association with the identified bin. In one embodiment of the present invention, the one or more spur phase parameters includes a spur initial phase and a spur change rate. When the communication device receives a signal from another communication device, the communication device transforms the received signal to produce a multiple parallel output signals that are each associated with a bin of the multiple bins and cancels a spur in an output signal associated with the identified bin based on the estimated one or more spur phase parameters and spur amplitude.
摘要翻译：提供了能够在OFDM或通信系统中操作并且提供消除带内刺激的通信设备。通信设备识别与逆变换器的输出相关联的多个箱的仓，并且包括杂波，并且与所识别的箱相关联地估计一个或多个支路相位参数和杂波振幅。在本发明的一个实施例中，一个或多个支线相位参数包括支线初始相位和支线变化率。当通信设备从另一通信设备接收到信号时，通信设备将接收到的信号进行变换以产生多个并行输出信号，每个并行输出信号与多个箱的箱相关联并且消除与所识别的箱相关联的输出信号中的杂散基于估计的一个或多个支线相位参数和支线振幅。

7. 发明申请

US20080101212A1 METHOD AND APPARATUS FOR SPUR CANCELLATION IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING COMMUNICATION SYSTEM 有权
标题翻译：在正交频分复用通信系统中进行动态消除的方法和装置
公开(公告)号：US20080101212A1
公开(公告)日：2008-05-01
申请号：US11554788
申请日：2006-10-31
申请人： Xiaoyong Yu , Thomas J. Kovarik , Alan P. Rottinghaus
发明人： Xiaoyong Yu , Thomas J. Kovarik , Alan P. Rottinghaus
IPC分类号： H04J11/00 , H04J1/00
CPC分类号： H04L27/2655 , H04L25/03159
摘要： A communication device is provided that is capable of operating in an OFDM or communication system and that provides for cancellation of in-band spurs. The communication device identifies a bin of multiple bins associated with an output of an inverse transformer and comprising a spur and estimates one or more spur phase parameters and a spur amplitude in association with the identified bin. In one embodiment of the present invention, the one or more spur phase parameters includes a spur initial phase and a spur change rate. When the communication device receives a signal from another communication device, the communication device transforms the received signal to produce a multiple parallel output signals that are each associated with a bin of the multiple bins and cancels a spur in an output signal associated with the identified bin based on the estimated one or more spur phase parameters and spur amplitude.
摘要翻译：提供了能够在OFDM或通信系统中操作并且提供消除带内刺激的通信设备。通信设备识别与逆变换器的输出相关联的多个箱的仓，并且包括杂波，并且与所识别的箱相关联地估计一个或多个支路相位参数和杂波振幅。在本发明的一个实施例中，一个或多个支线相位参数包括支线初始相位和支线变化率。当通信设备从另一通信设备接收到信号时，通信设备将接收到的信号进行变换以产生多个并行输出信号，每个并行输出信号与多个箱的箱相关联并且消除与所识别的箱相关联的输出信号中的杂散基于估计的一个或多个支线相位参数和支线振幅。

8. 发明申请

US20080109701A1 Turbo Interference Suppression in Communication Systems 有权
标题翻译：通信系统中的Turbo干扰抑制
公开(公告)号：US20080109701A1
公开(公告)日：2008-05-08
申请号：US11554209
申请日：2006-10-30
申请人： Xiaoyong Yu , Michael N. Kloos
发明人： Xiaoyong Yu , Michael N. Kloos
IPC分类号： H03M13/00
CPC分类号： H03M13/31 , H03M13/258 , H03M13/2957 , H03M13/3776 , H03M13/3905 , H03M13/6331 , H03M13/6544
摘要： Disclosed is a method and communication device for suppressing interference. The method comprises performing, with a turbo decoder (314), at least one turbo decoding attempt (1106) on a received signal (1104). The turbo decoding attempt generates at least one whole word code bit therefrom (1108). The whole word code bit (1108) corresponds to a group of bits comprising a transmitted symbol. The method determines if the whole word code bit (1108) has a confidence level exceeding a given threshold (1110). If the whole word code bit (1108) does have a confidence level exceeding the given threshold, the whole code word bit is selected for use in data symbol recovery (1114).
摘要翻译：公开了一种用于抑制干扰的方法和通信装置。该方法包括使用turbo解码器（314）在接收信号（1104）上执行至少一个turbo解码尝试（1106）。 turbo解码尝试从其产生至少一个完整的字码位（1108）。整个字码位（1108）对应于包括发送符号的一组位。该方法确定整个字码位（1108）是否具有超过给定阈值的置信度（1110）。如果整个字码位（1108）确实具有超过给定阈值的置信度，则整数码字位被选择用于数据符号恢复（1114）。

9. 发明授权

US07979775B2 Turbo interference suppression in communication systems 有权
标题翻译：通信系统中的Turbo干扰抑制
公开(公告)号：US07979775B2
公开(公告)日：2011-07-12
申请号：US11554209
申请日：2006-10-30
申请人： Xiaoyong Yu , Michael N. Kloos
发明人： Xiaoyong Yu , Michael N. Kloos
IPC分类号： H03M13/00
CPC分类号： H03M13/31 , H03M13/258 , H03M13/2957 , H03M13/3776 , H03M13/3905 , H03M13/6331 , H03M13/6544
摘要： Disclosed is a method and communication device for suppressing interference. The method comprises performing, with a turbo decoder (314), at least one turbo decoding attempt (1106) on a received signal (1104). The turbo decoding attempt generates at least one whole word code bit therefrom (1108). The whole word code bit (1108) corresponds to a group of bits comprising a transmitted symbol. The method determines if the whole word code bit (1108) has a confidence level exceeding a given threshold (1110). If the whole word code bit (1108) does have a confidence level exceeding the given threshold, the whole code word bit is selected for use in data symbol recovery (1114).
摘要翻译：公开了一种用于抑制干扰的方法和通信装置。该方法包括使用turbo解码器（314）在接收信号（1104）上执行至少一个turbo解码尝试（1106）。 turbo解码尝试从其产生至少一个完整的字码位（1108）。整个字码位（1108）对应于包括发送符号的一组位。该方法确定整个字码位（1108）是否具有超过给定阈值的置信度（1110）。如果整个字码位（1108）确实具有超过给定阈值的置信度，则整数码字位被选择用于数据符号恢复（1114）。

10. 发明申请

US20150282171A1 Frequency Error Correction for LTE Uplink CoMP 有权
标题翻译： LTE上行链路协议的频率纠错
公开(公告)号：US20150282171A1
公开(公告)日：2015-10-01
申请号：US14430699
申请日：2012-09-24
申请人： Shirish NAGARAJ , Xiaoyong YU , NOKIA SIEMENS NETWORKS OY
发明人： Xiaoyong Yu , Shirish Nagaraj
IPC分类号： H04W72/04 , H04L5/00 , H04L25/02 , H04L27/26 , H04L25/03
CPC分类号： H04W72/0453 , H04B7/0857 , H04L5/0005 , H04L5/0035 , H04L25/0204 , H04L25/0206 , H04L25/0212 , H04L25/022 , H04L25/0224 , H04L25/03159 , H04L27/0014 , H04L27/2657 , H04L27/266 , H04L2027/0067
摘要： A method includes, for a selected user equipment for signals corresponding in part to the selected user equipment and received by antennas from a number of cells, wherein each cell has one or more antennas, and wherein each signal is from an individual one of the antennas, performing the following: estimating carrier frequency offset for each cell using one or more of the signals from the cell; performing frequency offset correction on each signal from each cell by using at least the estimated carrier frequency offset for an associated cell; estimating a channel for each frequency offset corrected signal; and combining, using the estimated channels, each of the frequency offset corrected signals to generate one or more estimates of one or more symbols transmitted from the selected user equipment. A second frequency offset correction may be performed subsequent to the combining. Apparatus, computer programs, and software are also disclosed.
摘要翻译：一种方法包括：对于所选择的用户设备，对于部分与所选用户设备相对应并且由多个小区的天线接收的信号，其中每个小区具有一个或多个天线，并且其中每个信号来自所述天线中的单个天线执行以下操作：使用来自该小区的一个或多个信号来估计每个小区的载波频率偏移; 通过至少使用相关联的小区的估计的载波频率偏移来对来自每个小区的每个信号执行频率偏移校正; 估计每个频偏补偿信号的信道; 以及使用估计的信道组合每个频偏校正信号以产生从所选择的用户设备发送的一个或多个符号的一个或多个估计。可以在组合之后执行第二频率偏移校正。还公开了装置，计算机程序和软件。

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