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21. 发明申请

US20070178927A1 Centralized medium access control algorithm for CDMA reverse link 失效
标题翻译： CDMA反向链路的集中式媒体接入控制算法
公开(公告)号：US20070178927A1
公开(公告)日：2007-08-02
申请号：US11441651
申请日：2006-05-25
申请人： Ivan Fernandez-Corbaton , Ahmad Jalali , Jordi Pinos Pont
发明人： Ivan Fernandez-Corbaton , Ahmad Jalali , Jordi Pinos Pont
IPC分类号： H04B7/00 , H04Q7/20
CPC分类号： H04W52/343 , H04W52/367
摘要： A novel MAC algorithm is disclosed having various features for a modern CDMA interference-shared reverse link, including (a) link quality assurance, (b) individual congestion control, (c) variable data rate transition policy, and/or (d) reverse link partitioning. Link quality assurance is provided by monitoring transmission feedback information (ACK/NACK) to indirectly determine the quality of a communication link. Wireless devices are individually targeted to perform congestion control of the reverse link. Variable data transmission rates and discontinuous transmissions are achieved by individual wireless devices that autonomously adjust their transmission rate and transmit power. The reverse link can also be partitioned among the different wireless devices by individually controlling the transmit power of the wireless devices operating on the reverse link.
摘要翻译：公开了一种新颖的MAC算法，其具有用于现代CDMA干扰共享反向链路的各种特征，包括（a）链路质量保证，（b）个体拥塞控制，（c）可变数据速率转换策略和/或（d）反向链接分区。通过监视传输反馈信息（ACK / NACK）来间接地确定通信链路的质量来提供链路质量保证。无线设备被单独定向以执行反向链路的拥塞控制。可变数据传输速率和不连续传输通过自主调整其传输速率和传输功率的各个无线设备实现。也可以通过单独控制在反向链路上操作的无线设备的发射功率，在不同的无线设备之间对反向链路进行分区。

22. 发明申请

US20070086513A1 SYSTEM AND METHOD FOR ADJUSTING COMBINER WEIGHTS USING AN ADAPTIVE ALGORITHM IN WIRELESS COMMUNICATIONS SYSTEM 有权
标题翻译：使用无线通信系统中的自适应算法调整组合权重的系统和方法
公开(公告)号：US20070086513A1
公开(公告)日：2007-04-19
申请号：US11564824
申请日：2006-11-29
申请人： Ivan Fernandez-Corbaton , John Smee , Srikant Jayaraman
发明人： Ivan Fernandez-Corbaton , John Smee , Srikant Jayaraman
IPC分类号： H04B1/00
CPC分类号： H04B1/712 , H04B7/0854 , H04B7/0897 , H04B2201/70701
摘要： Method and apparatus to compute the combiner coefficients for wireless communication systems using an adaptive algorithm. One embodiment trains the weights on a signal known a priori that is time multiplexed with other signals, such as a pilot signal in a High Data Rate, HDR, system, wherein the signal is transmitted at full power. The adaptive algorithm recursively computes the weights during the pilot interval and applies the weights generated to the traffic signals. In one embodiment, the algorithm is a recursive least squares algorithm employing a transversal filter and weight calculation unit.
摘要翻译：使用自适应算法计算无线通信系统的组合器系数的方法和装置。一个实施例对先前已知的与其他信号进行时间复用的信号（例如高数据速率，HDR，系统中的导频信号）来训练权重，其中信号以全功率发送。自适应算法递归地计算导频间隔期间的权重，并将生成的权重应用于业务信号。在一个实施例中，算法是采用横向滤波器和权重计算单元的递归最小二乘法算法。

23. 发明申请

US20060286954A1 Method and apparatus for matching receiver carrier frequency 有权
公开(公告)号：US20060286954A1
公开(公告)日：2006-12-21
申请号：US11509388
申请日：2006-08-23
申请人： Ivan Fernandez-Corbaton , John Smee , Srikant Jayaraman
发明人： Ivan Fernandez-Corbaton , John Smee , Srikant Jayaraman
IPC分类号： H04B1/06 , H04B7/00
CPC分类号： H04L27/0014 , H03J7/04 , H04B1/707 , H04L2027/0028 , H04L2027/0055 , H04L2027/0067 , H04L2027/0095
摘要： A carrier recovery method and apparatus using multiple stages of carrier frequency recovery are disclosed. A receiver uses multiple frequency generation sources to generate carrier signals used to downconvert a received signal. An analog frequency reference having a wide frequency range and coarse frequency resolution is used in conjunction with a digital frequency reference having a narrow frequency range and fine frequency resolution. The multiple carrier signals are multiplied by a received signal to effect a multi-stage downconversion, resulting in a baseband signal. A frequency tracking module measures the residual frequency error present in the baseband signal. The measured residual frequency error is then used to adjust the frequencies of the carrier signals generated by the multiple frequency generation sources.

24. 发明申请

US20060223559A1 Doppler compensation scheme 失效
标题翻译：多普勒补偿方案
公开(公告)号：US20060223559A1
公开(公告)日：2006-10-05
申请号：US11231395
申请日：2005-09-20
申请人： Pei Chen , Ivan Fernandez-Corbaton
发明人： Pei Chen , Ivan Fernandez-Corbaton
IPC分类号： H04B1/00 , H04B7/00 , H04B15/00
CPC分类号： H04W56/0035 , H04B7/01 , H04B7/18506 , H04B17/336
摘要： At least one embodiment of the invention provides an automated frequency offset compensation method, system, and apparatus that improves throughput between one or more wireless communication devices by compensating for frequency offsets caused by a Doppler effect. In particular, one implementation estimates the frequency offset and uses this to compensate the carrier signal power to interference power ratio (C/I) when the transmitting and receiving devices are moving relative to each other such that a Doppler effect creates a frequency offset in the perceived frequency of the received carrier signal.
摘要翻译：本发明的至少一个实施例提供了通过补偿由多普勒效应引起的频率偏移来提高一个或多个无线通信设备之间的吞吐量的自动频率偏移补偿方法，系统和装置。特别地，一种实施方式估计频率偏移，并且当发射和接收装置相对于彼此移动时，使用它来补偿载波信号功率与干扰功率比（C / I），使得多普勒效应在接收的载波信号的感知频率。

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