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1. 发明授权

US07009573B2 Compact bidirectional repeaters for wireless communication systems 有权
标题翻译：用于无线通信系统的紧凑型双向中继器
公开(公告)号：US07009573B2
公开(公告)日：2006-03-07
申请号：US10640224
申请日：2003-08-12
申请人： James J. Hornsby , Gary G. Sanford , Kris Kelkar , Shawn Aleman , Vishwanaph G. Upadhye
发明人： James J. Hornsby , Gary G. Sanford , Kris Kelkar , Shawn Aleman , Vishwanaph G. Upadhye
IPC分类号： H01Q13/10 , H01B7/14
CPC分类号： H04B7/15571
摘要： Compact bidirectional repeaters are provided for wireless communication systems. Their compact size is realized with repeater structures that include different-polarization antennas, back lobe suppressing structures, circuit feedback paths, antenna-feedback detectors, and automatic gain control.
摘要翻译：为无线通信系统提供紧凑型双向中继器。它们的紧凑尺寸通过包括不同极化天线，后波瓣抑制结构，电路反馈路径，天线反馈检测器和自动增益控制的中继器结构来实现。

2. 发明授权

US06553209B1 Upstream/downstream local oscillator methods and structures for wireless communication system transceivers 失效
标题翻译：用于无线通信系统收发器的上游/下游本地振荡器方法和结构
公开(公告)号：US06553209B1
公开(公告)日：2003-04-22
申请号：US09655497
申请日：2000-09-05
申请人： James J. Hornsby , Kris Kelkar
发明人： James J. Hornsby , Kris Kelkar
IPC分类号： H04B140
CPC分类号： H04B1/405
摘要： Local-oscillator systems for wireless communication systems are realized with oscillator networks that are phase locked to a bit timing clock. Two of the networks provide first and second phase coherent local-oscillator signals respectively to a receiver and transmitter of a transceiver. A third oscillator system forms a phase lock loop about one of the other networks and preferably includes a crystal to enhance short term stability. Because they track the bit timing clock, the first and second local-oscillator signals phase track all communication signals in the transceiver's communication system.
摘要翻译：用于无线通信系统的本地振荡器系统通过锁相到位定时时钟的振荡器网络来实现。两个网络分别向接收机和发射机提供第一和第二相位本地振荡器信号。第三振荡器系统围绕其他网络之一形成锁相环，并且优选地包括晶体以增强短期稳定性。由于它们跟踪位定时时钟，所以第一和第二本地振荡器信号相位跟踪收发器通信系统中的所有通信信号。

3. 发明授权

US06396803B2 Modulation methods and structures for wireless communication systems and transceivers 有权
标题翻译：无线通信系统和收发器的调制方法和结构
公开(公告)号：US06396803B2
公开(公告)日：2002-05-28
申请号：US09817657
申请日：2001-03-26
申请人： James J. Hornsby , Kris Kelkar
发明人： James J. Hornsby , Kris Kelkar
IPC分类号： H04J1100
CPC分类号： H04L5/143 , H04L5/023
摘要： Wireless communication methods and structures are provided that enhance communication robustness while reducing cost. They communicate downstream data with orthogonal frequency division multiplexing (OFDM) transmission processes and upstream data with single carrier transmission processes. This combination of transmission processes is configured with various signal modulations (e.g., quadrature phase shift keying (QPSK), m-ary phase shift keying (MPSK) and n-quadrature amplitude modulation (QAM)) to provide lower cost upstream communication from customer services equipments (CPEs) and more robust downstream communication from headends than has been achieved in conventional communication systems. Signal diversity is enhanced by receiving communication signals with multiple antennas that are spatially separated and have different polarizations to thereby enhance frequency diversity. Signal diversity is further enhanced by combining the received signals in ways that maximize the ratio of desired to undesired signals.
摘要翻译：提供了提高通信鲁棒性同时降低成本的无线通信方法和结构。它们利用正交频分复用（OFDM）传输过程和单载波传输过程的上行数据来传送下行数据。传输过程的这种组合通过各种信号调制（例如，正交相移键控（QPSK），多相移相键控（MPSK）和正交幅度调制（QAM））来配置，从而提供来自客户服务的较低成本的上游通信设备（CPE）和前端更强大的下游通信比传统通信系统实现。通过接收具有空间分离的多个天线的通信信号并且具有不同的极化从而增强频率分集来增强信号分集。通过以最大化期望信号和非期望信号的比率的方式组合接收的信号来进一步增强信号分集。

4. 发明授权

US07085306B1 System and method for a multi-frequency upstream channel in a computer network 失效
标题翻译：计算机网络中多频上行信道的系统和方法
公开(公告)号：US07085306B1
公开(公告)日：2006-08-01
申请号：US10013321
申请日：2001-10-30
申请人： Mikhail Voldman , Dan Budinger , Ali Akgun , John G. Fijolek , Mark O. Vogel , Kris Kelkar
发明人： Mikhail Voldman , Dan Budinger , Ali Akgun , John G. Fijolek , Mark O. Vogel , Kris Kelkar
IPC分类号： H04B1/713
CPC分类号： H04B1/715 , H04B7/12 , H04B2001/7154 , H04N21/2385 , H04N21/2408
摘要： System and method for providing a multi-frequency upstream transmission channel to a network device. When a headend network entity generates an upstream channel descriptor message, the descriptor message includes at least two upstream frequencies available for upstream transmission, and a frequency hopping descriptor with a frequency-hopping pattern associated with the available frequencies for determining an upstream frequency for upstream transmission. The headend provides a timing reference for determining upstream transmission periods on the frequencies available on the network device. When the headend receives upstream transmission on one of the available upstream frequencies, the headend network entity determines frequency distortions. If the distortions exceed a threshold level, the headend may send a new upstream channel descriptor message that excludes the upstream frequency associated with the high frequency distortions, add a new upstream frequency, or defines a new frequency-hopping pattern.
摘要翻译：用于向网络设备提供多频上行传输信道的系统和方法。当前端网络实体生成上行信道描述符消息时，描述符消息包括可用于上行传输的至少两个上行频率，以及具有与用于确定用于上行传输的上行频率的可用频率相关联的跳频模式的跳频描述符。前端提供用于确定网络设备上可用频率的上行传输周期的定时参考。当前端在可用上行频率之一上接收上行传输时，头端网络实体确定频率失真。如果失真超过阈值水平，头端可以发送新的上行信道描述符消息，排除与高频失真相关联的上行频率，添加新的上行频率，或定义新的跳频模式。

5. 发明授权

US07035652B1 Wireless communication structures and methods with enhanced range and performance 有权
标题翻译：无线通信结构和方法具有增强的范围和性能
公开(公告)号：US07035652B1
公开(公告)日：2006-04-25
申请号：US10764077
申请日：2004-01-23
申请人： Kris Kelkar
发明人： Kris Kelkar
IPC分类号： H04Q7/20
CPC分类号： H04W88/08 , H04L1/0007 , H04L1/1607 , H04W74/08
摘要： Wireless communication structures and methods are provided that enhance range and performance via managed access to a wireless communication medium between system clients. The access is configured to maintain the low equipment costs and widespread equipment availability of standards-based communication systems. In particular, the structures include at least one antenna, a processor that spatially processes receive signals from the antenna, a media access controller that compares the age of receive location information with a predetermined time coherence, a location-information transformer that transforms the receive location information into transmit location information, and a transmit spatial processor configured to provide a transmit signal to the antenna that is spatially processed in accordance with the transmit location information if the age is less than the time coherence and spatially processed in accordance with predetermined location information if the age exceeds the time coherence. A database is preferably provided for storage of the receive location information and the age.
摘要翻译：提供了通过对系统客户端之间的无线通信介质的管理访问来增强范围和性能的无线通信结构和方法。该接入被配置为保持低设备成本和基于标准的通信系统的广泛的设备可用性。特别地，结构包括至少一个天线，空间处理来自天线的接收信号的处理器，将接收位置信息的年龄与预定时间相干进行比较的媒体接入控制器，将接收位置变换的位置信息变换器信息发送到发送位置信息，以及发送空间处理器，被配置为：如果年龄小于时间相干性并且根据预定位置信息进行空间处理，则根据发送位置信息向天线提供发送信号，空间处理如果这个时代超过了时间的一致性。优选地提供用于存储接收位置信息和年龄的数据库。

6. 发明授权

US07339979B1 Adaptive beamforming methods and systems that enhance performance and reduce computations 有权
标题翻译：自适应波束成形方法和增强性能并减少计算的系统
公开(公告)号：US07339979B1
公开(公告)日：2008-03-04
申请号：US10764040
申请日：2004-01-23
申请人： Kris Kelkar
发明人： Kris Kelkar
IPC分类号： H04L27/30
CPC分类号： H04B7/0617 , H04B7/0408 , H04B7/086
摘要： Wireless communication systems and methods are provided that a) enable progressive beamforming with antenna arrays and subarrays, b) provide current and delayed versions of data-carrying signals, and c) provide time-of-arrival of data-carrying signals. The progressive beamforming substantially reduces computational complexity. The current and delayed versions of data-carrying signals facilitate optimization of spatial information and optimization of information from non-coherent delays (which are delays beyond the handling capability of a system's modulation). The time-of-arrival information is used to facilitate a single matrix inversion which substantially reduces the complexity of conventional beamforming computations.
摘要翻译：提供了无线通信系统和方法，其中a）使能与天线阵列和子阵列的逐行波束成形，b）提供数据携带信号的当前和延迟版本，以及c）提供数据携带信号的到达时间。逐行波束成形显着降低了计算复杂度。数据携带信号的当前和延迟版本促进空间信息的优化和来自非相干延迟（这是超出系统调制的处理能力的延迟）的信息的优化。到达时间信息用于促进单个矩阵反转，这显着降低了常规波束成形计算的复杂度。

7. 发明申请

US20050101264A1 Wireless communications structures and methods utilizing frequency domain spatial processing 有权
标题翻译：利用频域空间处理的无线通信结构和方法
公开(公告)号：US20050101264A1
公开(公告)日：2005-05-12
申请号：US10422411
申请日：2003-04-23
申请人： Charles Farlow , Kris Kelkar
发明人： Charles Farlow , Kris Kelkar
IPC分类号： H04B7/06 , H04B7/08 , H04B1/38
CPC分类号： H04B7/0874 , H04B7/0691
摘要： Wireless communications structures and methods are provided that utilize frequency domain spatial processing. Structure is included that receives and transmits signals from an array of Mβ antennas wherein the antennas are connected to M switches in groups of β. Each switch is connected to a single spatial processing channel and β antennas and each spatial processing channel is assigned complex multiplicative factor(s), or weight(s), that enhance overall system performance in the presence of interference and propagation-related impairments such as multipath fading.
摘要翻译：提供利用频域空间处理的无线通信结构和方法。包括从Mbeta天线阵列接收和发送信号的结构，其中天线以β组连接到M个开关。每个开关连接到单个空间处理通道和β天线，并且每个空间处理通道被分配复杂乘法因子或权重，其在存在干扰和传播相关损伤的情况下增强整体系统性能，例如多径衰落

8. 发明授权

US06345375B1 Packet-based communication methods and systems having improved data throughput 有权
标题翻译：基于分组的通信方法和具有改进的数据吞吐量的系统
公开(公告)号：US06345375B1
公开(公告)日：2002-02-05
申请号：US09257161
申请日：1999-02-24
申请人： Kris Kelkar , David M. Stewart
发明人： Kris Kelkar , David M. Stewart
IPC分类号： G08C2502
CPC分类号： H04L1/18
摘要： Packet-based communication methods and systems are provided which improve data throughput and which respond to different error-rate conditions with modifications appropriate for those conditions. In method embodiments, data frames are initially formed to each have N data packets and a frame error code. Data frames are then transmitted and checked. In response to the check, data packets of error-free data frames are routed through the system and data frames that are in error are retransmitted. The checking, processing and retransmitting steps are repeated until all data packets are routed through the communication system. In another method embodiment, data packets of each data frame found to be in error in the checking step are inserted into a data frame of the forming step. In a feedback feature, a system error rate is determined and, in response, N is periodically updated to a value that realizes the best throughput under the current noise condition of the transmission link.
摘要翻译：提供了基于分组的通信方法和系统，其提高了数据吞吐量，并且针对这些条件进行修改来响应不同的错误率条件。在方法实施例中，数据帧最初形成为具有N个数据分组和帧错误代码。然后传输和检查数据帧。响应于该检查，无错误数据帧的数据分组通过系统进行路由，重发出错误的数据帧。重复检查，处理和重传步骤，直到通过通信系统路由所有数据分组。在另一方法实施例中，在检查步骤中被发现有错误的每个数据帧的数据分组被插入到形成步骤的数据帧中。在反馈特征中，确定系统错误率，并且作为响应，将N周期性地更新为在传输链路的当前噪声条件下实现最佳吞吐量的值。

9. 发明授权

US07072693B2 Wireless communications structures and methods utilizing frequency domain spatial processing 有权
标题翻译：利用频域空间处理的无线通信结构和方法
公开(公告)号：US07072693B2
公开(公告)日：2006-07-04
申请号：US10422411
申请日：2003-04-23
申请人： Charles S. Farlow , Kris Kelkar
发明人： Charles S. Farlow , Kris Kelkar
IPC分类号： H04M1/00
CPC分类号： H04B7/0874 , H04B7/0691
摘要： Wireless communications structures and methods are provided that utilize frequency domain spatial processing. Structure is included that receives and transmits signals from an array of Mβ antennas wherein the antennas are connected to M switches in groups of β. Each switch is connected to a single spatial processing channel and β antennas and each spatial processing channel is assigned complex multiplicative factor(s), or weight(s), that enhance overall system performance in the presence of interference and propagation-related impairments such as multipath fading.
摘要翻译：提供利用频域空间处理的无线通信结构和方法。包括从Mbeta天线阵列接收和发送信号的结构，其中天线以β组连接到M个开关。每个开关连接到单个空间处理通道和β天线，并且每个空间处理通道被分配复杂乘法因子或权重，其在存在干扰和传播相关损伤的情况下增强整体系统性能，例如多径衰落

10. 发明授权

US06947507B2 Spatial-temporal methods and systems for reception of non-line-of-sight communication signals 有权
标题翻译：用于接收非视距通信信号的时空方法和系统
公开(公告)号：US06947507B2
公开(公告)日：2005-09-20
申请号：US09989337
申请日：2001-11-20
申请人： Kris Kelkar , Anand Kelkar
发明人： Kris Kelkar , Anand Kelkar
IPC分类号： H04B7/08 , H04L1/02 , H04L1/06 , H04L27/14
CPC分类号： H04B7/0891 , H04B7/0845 , H04L1/02 , H04L1/06
摘要： Receiver systems and methods are provided for processing transmit signals Str that are received over a receive channel Crcv which is formed by a plurality of receive paths. Method embodiments comprise the steps of a) receiving the transmit signals Str with a plurality of spatially separated antennas to form respective receive signals Srcv, and b) spatially and temporally processing the receive signals Srcv to form a combined corrected signal Scrctcmb that reduces errors in at least one signal parameter. Exemplary signal parameters include signal preambles, codes, spreading codes and modulations.
摘要翻译：接收机系统和方法被提供用于处理通过由多个接收路径形成的接收信道C rcv 接收的发射信号S SUB。方法实施例包括以下步骤：a）用多个空间上分离的天线接收发射信号，以形成相应的接收信号，并且b）在空间和时间上的处理接收信号S rcv 以形成组合校正信号，其减少了至少一个信号中的误差参数。示例性信号参数包括信号前导码，码，扩展码和调制。

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