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121.发明授权Systems and methods for random access in time division multiple access satellite radiotelephone communications 失效用于时分多址卫星无线电话通信的随机接入系统和方法
公开(公告)号：US5796726A
公开(公告)日：1998-08-18
申请号：US629358
申请日：1996-04-08
CPC分类号： H04B7/212 , H04W74/0866
摘要： In a time division multiple access (TDMA) satellite radiotelephone communications system, a radiotelephone communicates random access channel radiotelephone communications signals to a satellite over a dedicated random access channel uplink carrier frequency band. In response, a time division multiple access channel on a time division multiplexed uplink carrier frequency band different from the dedicated random access channel uplink carrier frequency band is assigned. The radiotelephone communicates time division multiplexed radiotelephone communications signals to the satellite over the allocated time division multiple access channel. Random access channel radiotelephone communications signals may be communicated to the satellite from a first radiotelephone over a first dedicated random access channel uplink carrier frequency band or from a second radiotelephone over a second dedicated random access channel uplink carrier frequency band different from said first dedicated random access channel uplink carrier frequency band. For a system in which the satellite communicates radiotelephone communications signals to radiotelephones located in a first coverage area and communicates radiotelephone communications signals to radiotelephones located in a second coverage area, random access channel radiotelephone communications signals may be communicated over a first dedicated random access uplink carrier frequency band if the radiotelephone is located in the first coverage area or communicating random access radiotelephone communications signals over a second dedicated random access channel uplink carrier frequency band different from the first dedicated random access uplink carrier band if the radiotelephone is located in the second coverage area.
摘要翻译： 在时分多址（TDMA）卫星无线电话通信系统中，无线电话机通过专用随机接入信道上行链路载波频带将随机接入信道无线电话通信信号传送到卫星。 作为响应，分配与专用随机接入信道上行链路载波频带不同的时分多路复用上行链路载波频带上的时分多址信道。 无线电话机通过分配的时分多址信道将时分复用无线电话通信信号传送到卫星。 随机接入信道无线电话通信信号可以通过第一专用随机接入信道上行链路载波频带从第一无线电话机传送到卫星，或者可以通过与所述第一专用随机接入不同的第二专用随机接入信道上行链路载波频带从第二无线电话机传送 信道上行载波频带。 对于其中卫星将无线电话通信信号传送到位于第一覆盖区域中的无线电话机并将无线电话通信信号传送到位于第二覆盖区域中的无线电话机的系统，随机接入信道无线电话通信信号可以通过第一专用随机接入上行链路载波 如果无线电话机位于第一覆盖区域或者如果无线电话机位于第二覆盖区域中，则通过与第一专用随机接入上行链路载波频带不同的第二专用随机接入信道上行链路载波频带来传送随机接入无线电话通信信号 。
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公开(公告)号：US20200177360A1
公开(公告)日：2020-06-04
申请号：US16697294
申请日：2019-11-27
摘要： A method in a node is disclosed. The method comprises receiving a signal, and obtaining a first oversampled received signal by sampling the received signal according to a symbol rate. The method further comprises estimating a first frequency offset based on the first oversampled received signal, the first frequency offset estimated using an estimation range limited to one of a bandwidth of the received signal or the symbol rate of the received signal, and obtaining a second oversampled received signal by sampling the received signal according to N times the symbol rate, wherein N is greater than 1. The method further comprises estimating a true frequency offset based on the first frequency offset estimate and the second oversampled received signal.
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公开(公告)号：US09356730B2
公开(公告)日：2016-05-31
申请号：US12524801
申请日：2008-01-29
申请人： Jung-Fu Cheng , Yi-Pin Eric Wang
发明人： Jung-Fu Cheng , Yi-Pin Eric Wang
CPC分类号： H04L1/0011 , H03M13/095 , H03M13/11 , H04L1/003 , H04L1/0083 , H04L1/0084
摘要： Teachings presented herein provide a method and apparatus for processing input information bits for coding using a code, such that the length of the information word formed from the input information bits matches a fixed information word length defined by the code. In at least one embodiment, a coding circuit receives input information bits (and adds error protection bits as needed, to make the information word length match the fixed information word length. The method and apparatus contemplate generating the error protection bits by sub-coding a subset of the input information bits (e.g., parity bit generation), thereby providing extra protection for that subset. These teachings allow the same code to be used for coding feedback or other information, where the amount of information to be coded varies as a function of operating modes.
摘要翻译： 本文提出的教学提供了一种用于处理使用代码进行编码的输入信息位的方法和装置，使得从输入信息位形成的信息字的长度与由代码定义的固定信息字长相匹配。 在至少一个实施例中，编码电路接收输入信息比特（并且根据需要添加误差保护比特，以使信息字长度与固定信息字长度匹配），该方法和装置考虑通过对子帧进行子编码来产生错误保护比特 输入信息位的子集（例如，奇偶校验位生成），从而为该子集提供额外的保护。这些教导允许将相同的代码用于编码反馈或其他信息，其中待编码的信息量作为函数变化 的操作模式。
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公开(公告)号：US08787426B2
公开(公告)日：2014-07-22
申请号：US13333703
申请日：2011-12-21
申请人： Yi-Pin Eric Wang , Stephen Grant , Ning He , Niklas Johansson
发明人： Yi-Pin Eric Wang , Stephen Grant , Ning He , Niklas Johansson
IPC分类号： H04B1/00
CPC分类号： H04B1/7107 , H04B1/7115 , H04B2201/709727 , H04B2201/709745
摘要： In a receive node of a wireless network, an iterative multi-user multi-stage interference cancellation receiver is used. After each stage of interference cancellation, interference characteristics change. An adaptive finger placement strategy is used in which after each stage of interference cancellation, finger delays and combining weights of the receiver are adapted to reflect the changed interference characteristics.
摘要翻译： 在无线网络的接收节点中，使用迭代多用户多级干扰消除接收机。 在干扰消除的每个阶段之后，干扰特性发生变化。 使用自适应手指放置策略，其中在干扰消除的每个阶段之后，接收机的手指延迟和组合权重适于反映改变的干扰特性。
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125.发明授权Multi-stage turbo equalization and interference cancellation receiver for wireless systems 有权用于无线系统的多级turbo均衡和干扰消除接收机公开(公告)号：US08681835B2
公开(公告)日：2014-03-25
申请号：US13402297
申请日：2012-02-22
IPC分类号： H04B1/00
CPC分类号： H04W72/1278 , H04B1/71075 , H04B1/712 , H04W72/082
摘要： In a receive node of a wireless network, an iterative multi-user multi-stage interference cancellation receiver is used. The receiver performs code-averaged equalization and chip chip-level code-specific interference over-cancellation on the received signals. This can result in a unified interference cancellation processing, and can avoid cumbersome calculations of code cross correlations that is required in symbol-level interference cancellation. A symbol-level code-averaged desired signal add-back is performed to address the over-cancellation of some desired signals.
摘要翻译： 在无线网络的接收节点中，使用迭代多用户多级干扰消除接收机。 接收机对接收到的信号执行代码平均均衡和芯片级代码特定的干扰过度消除。 这可以导致统一的干扰消除处理，并且可以避免在符号级干扰消除中所需的代码互相关的繁琐计算。 执行符号级代码平均期望信号加法来解决某些期望信号的过度消除。
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公开(公告)号：US08619742B2
公开(公告)日：2013-12-31
申请号：US11862601
申请日：2007-09-27
申请人： Jung-Fu Cheng , Yi-Pin Eric Wang , Stephen Grant
发明人： Jung-Fu Cheng , Yi-Pin Eric Wang , Stephen Grant
CPC分类号： H04B7/0473 , H04B1/707 , H04L1/0026 , H04L1/0031 , H04L1/0057 , H04L1/0073 , H04L1/06 , H04L25/0202
摘要： A block coding method and system for improving the reliability of Channel Quality Indicators (CQI) and antenna weight Indicators (AWI) reporting. A user terminal first generates 8-bit CQI and 2-bit AWI. A codeword generator produces a codeword responsive to these 10 CQI/AWI bits using a codebook or a generator matrix of a (20,10,6) code. The (20,10,6) code has a minimum Hamming distance of 6 The encoded codeword is transmitted to a receiver for decoding utilizing an identical (20,10,6) codebook.
摘要翻译： 一种用于提高信道质量指示符（CQI）和天线权重指示（AWI）报告的可靠性的块编码方法和系统。 用户终端首先生成8比特CQI和2比特AWI。 码字生成器使用（20,10,6）码的码本或生成矩阵来产生响应于这10个CQI / AWI比特的码字。 （20,10,6）码的最小汉明距离为6.编码的码字被传送到接收机，以利用相同的（20,10,6）码本解码。
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公开(公告)号：US08542781B2
公开(公告)日：2013-09-24
申请号：US13050697
申请日：2011-03-17
申请人： Yi-Pin Eric Wang , Dennis Hui
发明人： Yi-Pin Eric Wang , Dennis Hui
IPC分类号： H04L27/00
CPC分类号： H04L25/08 , H04L25/03012 , H04L25/03159 , H04L25/03171 , H04L25/03184 , H04L25/03312 , H04L25/03331 , H04L2025/03414 , H04L2025/03426
摘要： In one of its aspects the technology disclosed herein concerns a method of operating a receiver. The method comprises performing symbol detection by (1) receiving a frequency-domain signal that comprises contribution from time-domain symbols transmitted from one or more transmit antennas; (2) generating a transformation matrix and a triangular matrix based on a frequency domain channel response; (3) using the transformation matrix to transform the received frequency-domain signal to obtain a transformed frequency-domain signal; and (4) performing symbol detection by performing plural stages of detection, each stage of detection using elements of the transformed frequency-domain received signal associated with the detection stage.
摘要翻译： 在其中的一个方面，本文公开的技术涉及操作接收机的方法。 该方法包括：（1）接收包括从一个或多个发射天线发射的时域符号的贡献的频域信号; （2）基于频域信道响应生成变换矩阵和三角矩阵; （3）使用变换矩阵来变换接收到的频域信号以获得变换的频域信号; 和（4）通过执行多级检测来执行符号检测，每个检测阶段使用与检测级相关联的变换的频域接收信号的元素。
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公开(公告)号：US08515435B2
公开(公告)日：2013-08-20
申请号：US11045877
申请日：2005-01-28
IPC分类号： H04W72/00
CPC分类号： H04B7/0686 , H04B7/061 , H04B7/0626 , H04B7/065 , H04B7/0689 , H04B7/0691 , H04B2201/709727 , H04L1/0002 , H04L1/0025 , H04L1/0026 , H04L1/003 , H04L1/06
摘要： An adaptive transmission scheme provides multiple levels of adaptation. At a first level, a selection is made between a limited feedback or limited feedback scheme and a rich feedback scheme. At a second level of adaptation, a diversity mode is selected. Additional levels of adaptation could be employed.
摘要翻译： 自适应传输方案提供多级适配。 在第一级，在有限反馈或有限反馈方案和丰富的反馈方案之间进行选择。 在第二级适配时，选择分集模式。 可以采用额外的适应水平。
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公开(公告)号：US20130148634A1
公开(公告)日：2013-06-13
申请号：US13324645
申请日：2011-12-13
IPC分类号： H04W36/00
CPC分类号： H04B7/0691 , H04B7/0452 , H04B7/0665 , H04B7/0697 , H04L25/0202
摘要： With the asymmetric resource sharing disclosed herein, a base station transmits fewer information symbols at some transmission times to one or more mobile terminals than to other mobile terminals at other transmission times. After transmitting the information symbols, the base station receives channel estimates from the mobile terminals, which the base station then use to generate synthesized signals representing estimates of the signals received at the mobile terminals. The base station subsequently combines complementary pairs of the synthesized signals to generate combined signals and transmits at least one of the combined signals to implement at least one virtual antenna for at least one of the mobile terminals.
摘要翻译： 利用这里公开的不对称资源共享，基站在一些传输时间将更少的信息符号发送到一个或多个移动终端，而不是在其他传输时间的其他移动终端。 在发送信息符号之后，基站从移动终端接收信道估计，基站然后用于产生表示在移动终端处接收的信号的估计的合成信号。 基站随后组合互补的合成信号对以产生组合信号并发送组合信号中的至少一个，以便为至少一个移动终端实现至少一个虚拟天线。
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130.发明授权公开(公告)号：US08428106B2
公开(公告)日：2013-04-23
申请号：US12138655
申请日：2008-06-13
IPC分类号： H04B1/00
CPC分类号： H04L25/0242 , H04B1/71052 , H04B1/712 , H04B2201/709727 , H04L25/0208
摘要： The technology comprises method(s) and apparatus for operating a telecommunications system. In its basic form the method comprises providing plural channelization codes for potential use by an uplink receiver; using unused channelization codes of the plural codes to generate an estimate of an impairment covariance matrix; and using the estimate of the impairment covariance matrix to form a processing parameter. For example, the processing parameter can be one or more weight values which, in turn, are can be used for generating a combined output signal.
摘要翻译： 该技术包括用于操作电信系统的方法和装置。 在其基本形式中，该方法包括提供用于上行链路接收机的潜在用途的多个信道化码; 使用所述多个代码的未使用的信道化码来生成损害协方差矩阵的估计; 并使用损伤协方差矩阵的估计来形成处理参数。 例如，处理参数可以是一个或多个加权值，其又可以用于产生组合的输出信号。
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