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111. 发明授权

US07260077B2 Adaptive scheduling for multi-carrier systems 有权
标题翻译：多载波系统的自适应调度
公开(公告)号：US07260077B2
公开(公告)日：2007-08-21
申请号：US10172626
申请日：2002-06-14
申请人： Jianming Wu , Wen Tong
发明人： Jianming Wu , Wen Tong
IPC分类号： H04B7/212 , H04L12/66
CPC分类号： H04W72/1252 , H04W72/1257
摘要： A scheduler in a base station determines or estimates a cumulative throughput based on the scheduling criteria used by the base station. Based on the cumulative throughput for each slot, the mobile terminals are divided into one of two groups. The first group is provided for mobile terminals having a lower throughput, while the remaining mobile terminals are placed in a second group associated with higher throughput. The mobile terminal in the first group having the lowest throughput has data scheduled for transmission on the next slot over the best available carrier. The remaining mobile terminals in the first group are iteratively scheduled for transmission on the best remaining carriers, until no mobile terminals remain. Once scheduling for the first group is complete, scheduling for the second group can take place. Preferably, scheduling for the second group is performed to maximize throughput on the remaining carrier or carriers.
摘要翻译：基站中的调度器基于基站使用的调度准则来确定或估计累积吞吐量。基于每个时隙的累积吞吐量，移动终端被分成两组之一。第一组被提供用于具有较低吞吐量的移动终端，而剩余的移动终端被放置在与较高吞吐量相关联的第二组中。具有最低吞吐量的第一组中的移动终端具有调度用于在最佳可用载波上的下一个时隙上传输的数据。第一组中的剩余移动终端被迭代地调度用于在最佳剩余载波上传输，直到不存在移动终端。一旦第一组的调度完成，则可以进行第二组的调度。优选地，执行第二组的调度以最大化剩余的载波或载波上的吞吐量。

112. 发明申请

US20070183527A1 Space-time transmit diversity systems and methods for ofdm applications 有权
标题翻译：时空发射分集系统和方法应用于ddm
公开(公告)号：US20070183527A1
公开(公告)日：2007-08-09
申请号：US11547073
申请日：2005-04-04
申请人： Ming Jia , Wen Tong , Jianglei Ma , Peiying Zhu , Doug-Sheng Yu
发明人： Ming Jia , Wen Tong , Jianglei Ma , Peiying Zhu , Doug-Sheng Yu
IPC分类号： H04L1/02
CPC分类号： H04B7/0691 , H04B7/0669 , H04B7/0689 , H04B7/0891 , H04L1/0069 , H04L1/0643 , H04L1/0662 , H04L1/0668 , H04L27/2602 , H04L27/2626 , H04L27/2647
摘要： Embodiments of the invention provide orthogonal Frequency Division Multiplexing-Space-time Block Codes (OFDMSTBC) mappings for code rate 1, 2 and 4 codes for 4 Transmit Antennas. To overcome the innate weakness of known codes, a new class of STBC codes is provided which is particularly suited for OFDM applications, although other applications are also contemplated. Codes for STBC mappings in the time direction, the frequency direction and a combined time frequency mapping for multiple antennas are provided. In OFDM applications, these codes exploit the properties of OFDM and FEC codes to substantially maintain the advantages of Alamouti codes. Furthermore, while the detailed examples given herein focus on four antenna applications, they can be easily extended to systems with more than four antennas.
摘要翻译：本发明的实施例为4个发射天线的码率1,2和4码提供正交频分复用 - 空时块码（OFDMSTBC）映射。为了克服已知代码的固有缺点，提供了一类新的STBC代码，其特别适用于OFDM应用，尽管也考虑了其他应用。提供了在时间方向上的STBC映射代码，频率方向和多个天线的组合时间频率映射。在OFDM应用中，这些代码利用OFDM和FEC码的性质来基本上保持Alamouti码的优点。此外，虽然本文给出的详细示例集中在四个天线应用，但是它们可以容易地扩展到具有多于四个天线的系统。

113. 发明授权

US07248559B2 Scattered pilot pattern and channel estimation method for MIMO-OFDM systems 有权
标题翻译： MIMO-OFDM系统的分散导频模式和信道估计方法
公开(公告)号：US07248559B2
公开(公告)日：2007-07-24
申请号：US10038883
申请日：2002-01-08
申请人： Jianglei Ma , Ming Jia , Peiying Zhu , Wen Tong
发明人： Jianglei Ma , Ming Jia , Peiying Zhu , Wen Tong
IPC分类号： H04J11/00 , H04Q7/00 , H04B7/216 , H04B7/02 , H04L27/00
CPC分类号： H04L27/2613 , H04B7/04 , H04B7/0413 , H04B7/0684 , H04L1/0618 , H04L5/0023 , H04L5/0048 , H04L25/0204 , H04L25/022 , H04L25/0234 , H04L25/0244 , H04L27/2602 , H04L27/2627 , H04W52/42
摘要： A method and apparatus are provided for reducing the number of pilot symbols within a MIMO-OFDM communication system, and for improving channel estimation within such a system. For each transmitting antenna in an OFDM transmitter, pilot symbols are encoded so as to be unique to the transmitting antenna. The encoded pilot symbols are then inserted into an OFDM frame to form a diamond lattice, the diamond lattices for the different transmitting antennae using the same frequencies but being offset from each other by a single symbol in the time domain. At the OFDM receiver, a channel response is estimated for a symbol central to each diamond of the diamond lattice using a two-dimensional interpolation. The estimated channel responses are smoothed in the frequency domain. The channel responses of remaining symbols are then estimated by interpolation in the frequency domain.
摘要翻译：提供了一种用于减少MIMO-OFDM通信系统内的导频符号的数量并改善这种系统内的信道估计的方法和装置。对于OFDM发射机中的每个发射天线，导频符号被编码为对于发射天线是唯一的。然后将编码的导频符号插入到OFDM帧中以形成菱形晶格，使用相同频率的不同发射天线的菱形晶格，但是在时域中通过单个符号彼此偏移。在OFDM接收机处，使用二维插值来估计针对钻石晶格的每个菱形的中心的符号的信道响应。估计的信道响应在频域中被平滑化。然后通过在频域中的内插来估计剩余符号的信道响应。

114. 发明申请

US20070091250A1 Wide-angle diving lens 有权
标题翻译：广角潜水镜
公开(公告)号：US20070091250A1
公开(公告)日：2007-04-26
申请号：US11255968
申请日：2005-10-24
申请人： Wen-Tong Hwang
发明人： Wen-Tong Hwang
IPC分类号： G02C1/00
CPC分类号： B63C11/12
摘要： This invention is directed to a device of “wide-angle diving lens” , primarily comprises a lens; and characterized by: the lens is made by a main lens and extended with a plurality of different angles of sub-window lens, or at the inner edge of the lens arranged Fresnel lens, or at the outer edge of the lens chamfered with embedded joint. Accordingly, the present invention “wide-angle diving lens” not only takes advantage of the multi-angles of lens to increase visible range and enhance the structure solidity but also applies Fresnel lens to modify the light refraction angle to enlarge visible range; and further assembly conveniently as well as no visible range disrupt.
摘要翻译：本发明涉及一种“广角潜水镜”的装置，主要包括透镜; 其特征在于：透镜由主透镜制成并且以多个不同角度的副窗透镜延伸，或者在透镜布置的菲涅尔透镜的内边缘处，或者在具有嵌入接头的透镜的外边缘处。因此，本发明的“广角潜水镜”不仅利用透镜的多角度增加可见光范围并提高结构的坚固性，而且还应用菲涅尔透镜来改变光折射角以扩大可见光范围; 并且方便地进一步组装以及没有可见的范围破坏。

115. 发明申请

US20070064586A1 Method and system for performing cell selection for OFDM communications 有权
标题翻译：用于执行OFDM通信的小区选择的方法和系统
公开(公告)号：US20070064586A1
公开(公告)日：2007-03-22
申请号：US11529222
申请日：2006-09-29
申请人： Jianglei Ma , Ming Jia , Peiying Zhu , Wen Tong
发明人： Jianglei Ma , Ming Jia , Peiying Zhu , Wen Tong
IPC分类号： H04J11/00
CPC分类号： H04W36/08 , H04B7/022 , H04B7/04 , H04B7/0413 , H04B7/0667 , H04B7/0697 , H04J11/0069 , H04L5/0023 , H04L5/0037 , H04L5/0048 , H04L7/0008 , H04L27/2602 , H04L27/2607 , H04L27/2613 , H04L27/2627 , H04L27/2628 , H04L27/2663 , H04L27/2665 , H04L27/2672 , H04L27/2675
摘要： A method and apparatus are provided for performing acquisition, synchronization and cell selection within an MIMO-OFDM communication system. A coarse synchronization is performed to determine a searching window. A fine synchronization is then performed by measuring correlations between subsets of signal samples, whose first signal sample lies within the searching window, and known values. The correlations are performed in the frequency domain of the received signal. In a multiple-output OFDM system, each antenna of the OFDM transmitter has a unique known value. The known value is transmitted as pairs of consecutive pilot symbols, each pair of pilot symbols being transmitted at the same subset of sub-carrier frequencies within the OFDM frame.
摘要翻译：提供了一种用于在MIMO-OFDM通信系统内执行采集，同步和小区选择的方法和装置。执行粗同步以确定搜索窗口。然后通过测量其第一信号样本位于搜索窗口内的信号样本的子集与已知值之间的相关性来执行精细同步。相关性在接收信号的频域中进行。在多输出OFDM系统中，OFDM发射机的每个天线具有唯一的已知值。已知值作为连续导频符号对发送，每对导频符号在OFDM帧内的子载波频率的相同子集上发送。

116. 发明授权

US07103325B1 Adaptive modulation and coding 有权
标题翻译：自适应调制和编码
公开(公告)号：US07103325B1
公开(公告)日：2006-09-05
申请号：US10116896
申请日：2002-04-05
申请人： Ming Jia , Jianglei Ma , Peiying Zhu , Dong-Sheng Yu , Wen Tong
发明人： Ming Jia , Jianglei Ma , Peiying Zhu , Dong-Sheng Yu , Wen Tong
IPC分类号： H04Q1/20 , H04B7/02
CPC分类号： H04L27/2614 , H04B7/0619 , H04B7/0669 , H04B7/0673 , H04L1/0003 , H04L1/0009 , H04L1/005 , H04L1/0057 , H04L1/0066 , H04L1/0067 , H04L1/0071 , H04L1/0625 , H04L1/0656 , H04L25/03866
摘要： The present invention selects a space-time encoding mode to use when transmitting with spatial diversity based on the receive diversity associated with a receiver device and the quality of the transmission channels based on information fed back from the receiver device. The selectable space-time encoding modes are preferably space-time transmit diversity encoding and a version of BLAST-type encoding. Further, modulation modes, error encoding rates, or a combination thereof, may also be based on the quality of the transmission channels and the available diversity of the receiver device.
摘要翻译：本发明基于基于与接收机装置相关联的接收分集和基于从接收机装置反馈的信息的传输信道的质量来选择使用空间分集进行发送时使用的时空编码模式。可选择的时空编码模式优选是时空发射分集编码和BLAST型编码的版本。此外，调制模式，错误编码率或其组合也可以基于传输信道的质量和接收机设备的可用分集。

117. 发明申请

US20060182026A1 Adaptive coding and modulation 有权
公开(公告)号：US20060182026A1
公开(公告)日：2006-08-17
申请号：US11403353
申请日：2006-04-13
申请人： Peiying Zhu , Wen Tong , Claude Royer
发明人： Peiying Zhu , Wen Tong , Claude Royer
IPC分类号： H04L12/26
CPC分类号： H04L1/1887 , H04L1/0003 , H04L1/0009 , H04L1/0068 , H04L1/1854 , H04L27/0012
摘要： The present invention provides a unique feedback system in a wireless communication system wherein the transmission channel is always overloaded with data, which is configured and modulated at a select order of modulation. Based on the channel conditions, only a portion of the data can be successfully received. As such, the receiver will attempt to receive the data using demodulation techniques corresponding to the different levels of modulation used to encode the data transmitted. The receiver will determine the data that is recovered, or the highest order of modulation at which the data is recovered, and provide feedback to the transmitter. The transmitter will then retransmit the data that was not properly received. By overloading the channel at all times, the maximum amount of data capable of being transmitted over the channel is optimized without requiring or heavily relying on the receiver feeding back channel condition information to the transmitter.

118. 发明授权

US06907020B2 Frame structures supporting voice or streaming communications with high speed data communications in wireless access networks 有权
公开(公告)号：US06907020B2
公开(公告)日：2005-06-14
申请号：US09834104
申请日：2001-04-12
申请人： Shalini S. Periyalwar , Wen Tong , Leo L. Strawczynski
发明人： Shalini S. Periyalwar , Wen Tong , Leo L. Strawczynski
IPC分类号： H04B7/26 , H04J3/16 , H04J11/00 , H04L1/00 , H04L1/08 , H04L1/20 , H04L12/56 , H04W72/04 , H04W74/02 , H04W74/04 , H04W99/00 , H04B7/212
CPC分类号： H04L1/0068 , H04B7/2656 , H04J3/1682 , H04L1/0002 , H04L1/0003 , H04L1/0007 , H04L1/0009 , H04L1/0025 , H04L1/0026 , H04L1/0071 , H04L1/08 , H04L1/20 , H04L45/00 , H04W74/02 , H04W74/04 , H04W99/00
摘要： A frame structure that is ordinarily optimized for providing variable high data rates also includes the flexibility to efficiently carry lower data rate, lower latency frames using sub-framing. Superframes, each comprised of a predetermined number of frames, carry voice and data communications at one or more variable data rates. The size of a superframe is limited, such as by the delay tolerance for voice transmission, typically 20 ms. Each voice customer is allotted one or more frames or portions of frames within the superframe, called sub-frames, as is needed to deliver the lower data rate, low latency voice communication. The allocation for the voice customers is not fixed, but varies as the data rate varies over time. Any bits in a frame that are not needed to carry voice communication are assigned to carry data having compatible data rate requirements. Additionally, the sub-framing concept may be extended to include ATM cells.

119. 发明授权

US06587517B1 Multi-stage receiver 有权
标题翻译：多级接收机
公开(公告)号：US06587517B1
公开(公告)日：2003-07-01
申请号：US09311708
申请日：1999-05-13
申请人： Bin Li , Wen Tong
发明人： Bin Li , Wen Tong
IPC分类号： H04L2706
CPC分类号： H04L27/233 , H04B1/707 , H04L1/0041 , H04L1/0045 , H04L1/0054 , H04L1/0071 , H04L25/0212 , H04L27/227
摘要： A multi-stage receiver and method for recovering a traffic signal embedded in at least one received signal. The multi-stage receiver includes a plurality of sequential detection stages for processing each received signal and providing successively better estimates of the traffic signal. The multi-stage receiver includes, for each received signal, a first processing stage and a second processing stage. The multi-stage receiver also includes a final processing stage connected to the second processing stages. Each first processing stage generates a first estimate of the traffic signal from the respective received signal and each second processing stage generates a set of energy values from the respective first estimate of the traffic signal and from the respective received signal. The final processing stage combines the set of energy values from each second processing stage and generates an improved estimate of the traffic signal. By employing multiple stages in the receiver, there is an improvement in successive estimates of the traffic signal.
摘要翻译：一种用于恢复嵌入到至少一个接收信号中的业务信号的多级接收机和方法。多级接收机包括多个顺序检测级，用于处理每个接收到的信号并提供连续更好的业务信号估计。对于每个接收信号，多级接收机包括第一处理级和第二处理级。多级接收机还包括连接到第二处理级的最后处理级。每个第一处理阶段从相应的接收信号产生交通信号的第一估计，并且每个第二处理阶段根据交通信号的相应的第一估计和相应的接收信号产生一组能量值。最终处理阶段组合来自每个第二处理阶段的能量值集合，并且生成交通信号的改进的估计。通过在接收机中采用多级，交通信号的连续估计有改善。

120. 发明授权

US06298461B1 Encoding and decoding methods and apparatus 有权
标题翻译：编码和解码方法和装置
公开(公告)号：US06298461B1
公开(公告)日：2001-10-02
申请号：US09236070
申请日：1999-01-25
申请人： Wen Tong , Rui Wang , Vitali B. Kreindeline , Mikhail G. Bakouline , Alexandre M. Chloma , Yuri S. Shinakov
发明人： Wen Tong , Rui Wang , Vitali B. Kreindeline , Mikhail G. Bakouline , Alexandre M. Chloma , Yuri S. Shinakov
IPC分类号： H03M1300
CPC分类号： H03M13/6362 , H03M13/1515 , H03M13/2966
摘要： An encoder for a wideband CDMA communications system comprises an outer Reed-Solomon code encoder and an inner parallel concatenated convolutional code (PCCC) or turbo code encoder. An iterative PCCC decoder, for decoding the inner code, includes summing functions in forward and feedback paths for producing extrinsic information to enhance soft decoding decisions by first and second decoders in successive decoding iterations. An outer code decoder connected following the PCCC decoder also can provide serial feedback information for enhancing iterative decisions by the PCCC decoder.
摘要翻译：用于宽带CDMA通信系统的编码器包括外部Reed-Solomon码编码器和内部并行级联卷积码（PCCC）或turbo码编码器。用于解码内码的迭代PCCC解码器包括用于产生外在信息的前向和反馈路径中的求和功能，以在连续解码迭代中增强第一和第二解码器的软解码决定。连接在PCCC解码器之后的外部码解码器也可以提供用于增强PCCC解码器的迭代决定的串行反馈信息。

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