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21. 发明申请

US20050207508A1 Joint timing recovery for multiple signal channels 有权
标题翻译：联合定时恢复多个信号通道
公开(公告)号：US20050207508A1
公开(公告)日：2005-09-22
申请号：US10608679
申请日：2003-06-27
申请人： Manoneet Singh , Sirikiat Ariyavisitakul
发明人： Manoneet Singh , Sirikiat Ariyavisitakul
IPC分类号： H04B7/08 , H04L1/02
CPC分类号： H04B7/086 , H04B7/084 , H04B7/0845
摘要： A spatial diversity receiver and method for determining a multichannel combined symbol timing marker that identifies an energy concentration for a combination of channel delay spreads in order to reduce the complexity of equalization. The receiver includes two or more receiver chains having spatially diverse antennas; a multichannel combined timer; and a multichannel combined equalizer for receiving wireless signals through two or more signal channels. The multichannel combined timer combines energies corresponding to the channel impulse response coefficients for all the channels for determining a series of multichannel combined metrics having associated index cursors, and then determines the multichannel combined symbol timing marker from the index cursor for the largest of the metrics. The symbol timing marker synchronizes the received symbols issued to the equalizer jointly to the energy concentration for the delay spreads combined for all the channels.
摘要翻译：一种空间分集接收机和方法，用于确定识别用于信道延迟扩展的组合的能量集中的多信道组合符号定时标记，以便降低均衡的复杂度。接收机包括具有空间多样的天线的两个或多个接收器链; 多通道组合定时器; 以及用于通过两个或更多个信号信道接收无线信号的多通道组合均衡器。多通道组合定时器组合对应于所有通道的信道脉冲响应系数的能量，用于确定具有相关联的指标光标的一系列多通道组合度量，然后从用于最大量度的索引光标确定多通道组合符号定时标记。符号定时标记将发送到均衡器的接收符号与用于所有信道的延迟传播的能量集中联合。

22. 发明授权

US5936754A Transmission of CDMA signals over an analog optical link 失效
标题翻译：通过模拟光链路传输CDMA信号
公开(公告)号：US5936754A
公开(公告)日：1999-08-10
申请号：US756929
申请日：1996-12-02
申请人： Sirikiat Ariyavisitakul , Sheryl Leigh Woodward
发明人： Sirikiat Ariyavisitakul , Sheryl Leigh Woodward
IPC分类号： H04B10/12
CPC分类号： H04B10/25758
摘要： A transmission system for backhauling CDMA signals from remote antennas to the centralized base station of a wireless communication system includes a laser transmitter and an optical receiver coupled to an optical fiber. Wireless signals are backhauled to the central base station without degrading signal quality, and with minimal signal processing performed at the remote antenna site. The RF drive current driving the laser transmitter is kept above a predetermined level to prevent noise caused by optical feedback into the laser transmitter caused by Rayleigh backscatter in the optical fiber. A method of testing the optical link is presented which avoids the expense of using a real CDMA system to test each link. The testing method enables the dynamic range of inexpensive, unisolated, uncooled lasers in the optical link to be increased so the optical link can cost-effectively backhaul the CDMA signals.
摘要翻译：用于将CDMA信号从远程天线回传到无线通信系统的集中式基站的传输系统包括激光发射机和耦合到光纤的光接收机。无线信号被回传到中央基站，而不降低信号质量，并且在远程天线位置执行最少的信号处理。将激光发射器驱动的RF驱动电流保持在预定水平以上，以防止由光纤中的瑞利反向散射引起的由光反馈引入到激光发射器中的噪声。提出了测试光链路的方法，其避免了使用真实CDMA系统来测试每个链路的费用。该测试方法使得能够增加光链路中廉价的，非隔离的，未冷却的激光器的动态范围，使得光链路能够成本有效地回传CDMA信号。

23. 发明授权

US5794153A Estimating PCS traffic from radio port measurements 失效
标题翻译：从无线电端口测量估计PCS流量
公开(公告)号：US5794153A
公开(公告)日：1998-08-11
申请号：US578121
申请日：1995-12-26
申请人： Sirikiat Ariyavisitakul , Lawrence Joel Greenstein
发明人： Sirikiat Ariyavisitakul , Lawrence Joel Greenstein
IPC分类号： H04B17/00 , H04W16/32 , H04W88/08 , H04B7/00
CPC分类号： H04W16/32 , H04B17/327 , H04W88/085
摘要： Average local traffic load in a simulcast radio system is estimated to achieve efficient resource sharing and dynamic reconfiguration of the simulcast areas. A method for estimating the average local traffic load uses relative power measurements at each radio port (or distributed antenna element). The estimating method is applicable to both code-division multiple access (CDMA) and time-division multiple access (TDMA) systems. The method provides accurate estimates of the actual radio port traffic over various system conditions, while requiring only an approximate knowledge of the radio propagation environment.
摘要翻译：估计联播无线电系统中的平均本地流量负载可以实现有效的资源共享和联播区域的动态重新配置。用于估计平均本地业务负载的方法使用在每个无线端口（或分布式天线元件）处的相对功率测量。该估计方法适用于码分多址（CDMA）和时分多址（TDMA）系统。该方法提供了在各种系统条件下实际无线电端口业务的精确估计，同时仅需要对无线电传播环境的近似知识。

24. 发明授权

US4849990A Digital communication system 失效
标题翻译：数字通讯系统
公开(公告)号：US4849990A
公开(公告)日：1989-07-18
申请号：US30826
申请日：1987-02-04
申请人： Fumio Ikegami , Susumu Yoshida , Tsutomu Takeuchi , Sirikiat Ariyavisitakul , Masaaki Sasada
发明人： Fumio Ikegami , Susumu Yoshida , Tsutomu Takeuchi , Sirikiat Ariyavisitakul , Masaaki Sasada
IPC分类号： H04L1/02
CPC分类号： H04L1/02
摘要： The present invention provides two branches of a base station transmitter and a base station receiver, respectively, and inserts a delay circuit for ensuring a delay time difference between D and U waves required to obtain the best bit error rate for a DSK system, BPSK-RZ system, QPSK-RZ system or the like, into each system of the transmitter and the receiver, respectively, or into either the transmitter or the receiver of each system, thereby efficiently improving the bit error rate.
摘要翻译： PCT No.PCT / JP85 / 00513 Sec。 371日期1987年2月4日 102（e）日期1987年2月4日PCT提交1985年9月13日PCT公布。出版物WO86 / 07514 日期：1986年12月18日。本发明分别提供基站发射机和基站接收机的两个分支，并插入一个延迟电路，用于确保获得最佳误码率所需的D波和U波之间的延迟时间差用于DSK系统，BPSK-RZ系统，QPSK-RZ系统等，分别插入到发射机和接收机的每个系统中，或者进入每个系统的发射机或接收机，从而有效地提高误码率。

25. 发明授权

US4807252A Digital communication system 失效
标题翻译：数字通讯系统
公开(公告)号：US4807252A
公开(公告)日：1989-02-21
申请号：US46787
申请日：1987-05-07
申请人： Fumio Ikegami , Susumu Yoshida , Tsutomu Takeuchi , Sirikiat Ariyavisitakul
发明人： Fumio Ikegami , Susumu Yoshida , Tsutomu Takeuchi , Sirikiat Ariyavisitakul
IPC分类号： H04L27/18 , H04L27/20 , H04L27/233
CPC分类号： H04L27/2085 , H04L27/2331
摘要： The present invention provides a digital communication system in which one time slot is divided into a first half section and a second half section and the carrier phase difference .theta. between each neighboring first half section is set to either (.pi., 0) with respect to a binary information symbol (1,0) or (0, .pi./2, .pi., 3/2.pi.) with respect to a quaternary information symbol (11, 01, 00, 10). In addition, the phase difference .psi. between the first half and the second half of any time slot is a constant value .psi..sub.0 (for example, .pi.rad) irrespective of the symbol, or .psi..sub.i determined with respect to a symbol (for example, +.pi./2 with respect to a symbol 1 or -.pi./2 with respect to a symbol 0). Therefore, an arbitrary complementary characteristic can be obtained when differentially demodulated in a multipath fading channel, irrespective of the amplitude characteristic of a demodulation signal.
摘要翻译：本发明提供了一种数字通信系统，其中一个时隙被分成第一半部分和第二半部分，并且每个相邻的前半部分之间的载波相位差θ相对于一个时隙被设置为（pi，0）二进制信息符号（1,0）或（0，pi / 2，pi，3/2 pi）相对于四元信息符号（11，01，00，10）。此外，任何时隙的前半部分和后半部分之间的相位差压力值是与符号相关的常数值psi 0（例如，pi rad），或者相对于符号确定的psi i（例如， + pi / 2相对于符号1或-π/ 2相对于符号0）。因此，无论解调信号的振幅特性如何，都可以在多路径衰落信道中进行差分解调时获得任意的互补特性。

26. 发明授权

US4726038A Digital communication system 失效
标题翻译：数字通讯系统
公开(公告)号：US4726038A
公开(公告)日：1988-02-16
申请号：US768551
申请日：1985-08-22
申请人： Fumio Ikegami , Susumu Yoshida , Tsutomu Takeuchi , Sirikiat Ariyavisitakul
发明人： Fumio Ikegami , Susumu Yoshida , Tsutomu Takeuchi , Sirikiat Ariyavisitakul
IPC分类号： H04L27/20 , H04L27/233 , H04L
CPC分类号： H04L27/2331 , H04L27/2085
摘要： The present invention provides a communication system which employs a signal whose carrier phase is shifted by a constant amount .DELTA..theta. per time slot in correspondence to each symbol (1 or 0) transmitted, and the phase shift is performed by .DELTA..theta./2 (or -.DELTA..theta./2) in the first 1/2 time slot and further by .DELTA..theta./2 (or -.DELTA..theta./2) in the second 1/2 time slot thereby to improve the bit error rate in multipath propagation.
摘要翻译：本发明提供了一种通信系统，该通信系统采用一个信号，该信号的载波相位相应于每个发送的符号（1或0）的每时隙偏移一定量的ΔTATA，并且相移由DELTAθ/ 2（或 - DELTAθ/ 2），并且在第二1/2时隙中还有DELTAθ/ 2（或-ΔTATA/ 2），从而提高多径传播中的误码率。

27. 发明授权

US09036516B2 Method and system for adaptive allocation of feedback resources for CQI and transmit pre-coding 有权
标题翻译：用于CQI的反馈资源的自适应分配和发送预编码的方法和系统
公开(公告)号：US09036516B2
公开(公告)日：2015-05-19
申请号：US13313297
申请日：2011-12-07
申请人： Mark Kent , Vinko Erceg , Jun Zheng , Sirikiat Ariyavisitakul
发明人： Mark Kent , Vinko Erceg , Jun Zheng , Sirikiat Ariyavisitakul
IPC分类号： H04W72/04 , H04W24/10
CPC分类号： H04W24/10 , H04B17/24 , H04W72/0453
摘要： In transmit pre-coding, a bandwidth and a feedback period to one or more CQI reporting units and a bandwidth and a feedback period to one or more PMI reporting units are assigned, respectively. Sub-divisions in time and/or frequency corresponding to the assigned bandwidths and the assigned feedback periods are dynamically adjusted based at least on uplink channel state information corresponding to the bandwidth and the feedback period assigned to the CQI reporting units, and the bandwidth and the feedback period assigned to the PMI reporting units. One or more feedback messages are generated based at least on the channel state information over the adjusted sub-divisions in time and/or frequency corresponding to the CQI reporting units and to the PMI reporting units, respectively. The bandwidth and/or the feedback period may be assigned based on the channel state information or as a function of a feedback rate.
摘要翻译：在发送预编码中，分配给一个或多个CQI报告单元的带宽和反馈周期以及到一个或多个PMI报告单元的带宽和反馈周期。至少基于对应于分配给CQI报告单元的带宽和反馈周期的上行链路信道状态信息来动态地调整与分配的带宽和分配的反馈周期相对应的时间和/或频率的子部分，并且带宽和反馈期分配给PMI报告单位。至少基于经调整的子部分的信道状态信息，分别对应于CQI报告单元和对应于PMI报告单元的时间和/或频率生成一个或多个反馈消息。可以基于信道状态信息或作为反馈速率的函数来分配带宽和/或反馈周期。

28. 发明授权

US08982969B2 Method and system for CQI/PMI feedback for precoded MIMO systems utilizing differential codebooks 有权
标题翻译：用于使用差分码本的预编码MIMO系统的CQI / PMI反馈的方法和系统
公开(公告)号：US08982969B2
公开(公告)日：2015-03-17
申请号：US11864672
申请日：2007-09-28
申请人： Mark Kent , Vinko Erceg , Jun Zheng , Sirikiat Ariyavisitakul , Uri Landau
发明人： Mark Kent , Vinko Erceg , Jun Zheng , Sirikiat Ariyavisitakul , Uri Landau
IPC分类号： H04L27/28 , H04B7/06 , H04L1/00
CPC分类号： H04B7/066 , H04B7/0632 , H04B7/0634 , H04B7/0639 , H04B7/0641 , H04L1/0026 , H04L1/0027
摘要： Aspects of a method and system for CQI/PMI feedback for precoded MIMO systems utilizing differential codebooks may include generating one or more feedback messages for one or more Channel Quality Indicator (CQI) reporting units based on at least channel state information associated with the one or more CQI reporting units. One or more differential feedback messages may be generated for one or more Pre-coding Matrix Index (PMI) reporting units based on at least channel state information associated with the one or more PMI reporting units, wherein the one or more PMI reporting units span a useable bandwidth. A bandwidth and a feedback period may be assigned to each of the one or more CQI reporting units and the one or more PMI reporting units to define the one or more CQI reporting units and the one or more PMI reporting units.
摘要翻译：基于使用差分码本的预编码MIMO系统的用于CQI / PMI反馈的方法和系统的方面可以包括基于至少与该一个或多个信道质量指示符（CQI）报告单元相关联的信道状态信息为一个或多个信道质量指示符（CQI）报告单元生成一个或多个反馈消息更多的CQI报告单位。至少基于与一个或多个PMI报告单元相关联的信道状态信息，可以为一个或多个预编码矩阵索引（PMI）报告单元生成一个或多个差分反馈消息，其中一个或多个PMI报告单元跨越可用带宽。可以将一个或多个CQI报告单元和一个或多个PMI报告单元中的每一个分配带宽和反馈周期以定义一个或多个CQI报告单元和一个或多个PMI报告单元。

29. 发明授权

US08472543B2 Method and system for predicting channel quality index (CQI) values for maximum likelihood (ML) detection in a 2×2 multiple input multiple output (MIMO) wireless system 失效
标题翻译：用于在2×2多输入多输出（MIMO）无线系统中预测用于最大似然（ML）检测的信道质量指数（CQI）值的方法和系统
公开(公告)号：US08472543B2
公开(公告)日：2013-06-25
申请号：US12430286
申请日：2009-04-27
申请人： Sirikiat Ariyavisitakul , Eric Ojard , Jun Zheng
发明人： Sirikiat Ariyavisitakul , Eric Ojard , Jun Zheng
IPC分类号： H04L23/02
CPC分类号： H04L25/0204 , H04B7/0854 , H04B17/24 , H04B17/336 , H04B17/373 , H04L1/0009 , H04L1/0016 , H04L1/0025 , H04L1/0026 , H04L1/20 , H04L25/0228 , H04L25/0248 , H04L25/03343 , H04L25/067 , H04L27/2601 , H04L2025/03426 , H04L2025/03802
摘要： Aspects of a method and system for predicting CQI values for ML detection in a 2×2 MIMO system are presented. In one aspect of the system, a CQI value for a MIMO communication system may be computed based on a computed channel realization by reverse mapping the computed channel realization to a corresponding CQI value. Based on the computed CQI value, a coding rate may be selected. The coding rate may be selected from a lookup table, wherein the computed CQI value is utilized as an index to the lookup table. The reverse mapping may utilize a function, which is computed using radial basis function networks. In another aspect of the system, a joint mutual information value may be computed for the MIMO communication system. The joint mutual information value may be computed based on a Shannon mutual information value and a matched filter mutual information value.
摘要翻译：提出了一种用于在2×2 MIMO系统中预测ML检测的CQI值的方法和系统的方面。在该系统的一个方面，可以基于所计算的信道实现，通过将计算的信道实现反向映射到相应的CQI值来计算MIMO通信系统的CQI值。基于所计算的CQI值，可以选择编码率。编码率可以从查找表中选择，其中所计算的CQI值被用作查找表的索引。反向映射可以利用使用径向基函数网络来计算的函数。在系统的另一方面，可以为MIMO通信系统计算联合互信息值。可以基于香农互信息值和匹配滤波器互信息值来计算联合互信息值。

30. 发明授权

US08442142B2 Method and system for beamforming signal transmission under a per-antenna power constraint 有权
标题翻译：在每个天线功率约束下波束成形信号传输的方法和系统
公开(公告)号：US08442142B2
公开(公告)日：2013-05-14
申请号：US12761567
申请日：2010-04-16
申请人： Eric Ojard , Sirikiat Ariyavisitakul , Joonsuk Kim
发明人： Eric Ojard , Sirikiat Ariyavisitakul , Joonsuk Kim
IPC分类号： H01Q3/00 , G01S1/00
CPC分类号： H01Q25/00
摘要： A method and system for beamforming signal transmission under a per-antenna power constraint is presented. In one aspect, a multiple input multiple output (MIMO) transmitting station may compute a per-antenna power gain factor for each of a plurality of transmit chain signals. The transmit chain signals may be concurrently transmitted by a plurality of transmitting antennas at the MIMO transmitting station. The plurality of transmit chain signals may correspond to beamforming signals, which are generated by performing spatial mapping on a plurality of space-time signals. The plurality of power gain factors may be computed based on a per-antenna power constraint. Alternatively, the plurality of power gain factors may be computed based on joint per-antenna power and total-power constraints. Each of the transmit chain signals may be amplified or attenuated based on the corresponding antenna gain factor. The amplified or attenuated signal is then transmitted by the corresponding transmitting antenna.
摘要翻译：提出了一种在每个天线功率约束下波束成形信号传输的方法和系统。在一个方面，多输入多输出（MIMO）发射站可以为多个发射链信号中的每一个计算每天线功率增益因子。发射链信号可以在MIMO发射台处由多个发射天线同时发射。多个发射链信号可以对应于通过在多个时空信号上执行空间映射而生成的波束形成信号。可以基于每天线功率约束来计算多个功率增益因子。或者，可以基于联合每天线功率和总功率约束来计算多个功率增益因子。每个发射链信号可以基于相应的天线增益因子被放大或衰减。放大或衰减的信号然后由相应的发射天线发射。

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