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11. 发明授权

US07778309B2 Apparatus and method for canceling interference from neighbor cells in broadband communication system 有权
标题翻译：宽带通信系统中消除相邻小区干扰的装置和方法
公开(公告)号：US07778309B2
公开(公告)日：2010-08-17
申请号：US11643340
申请日：2006-12-20
申请人： Yun-Ho Jung , Yun-Sang Park , Bong-Gee Song , Young-Hak Kim , Byung-Tae Kang , Min-Cheol Park , In-Hyoung Kim , Hae-Dong Yeon
发明人： Yun-Ho Jung , Yun-Sang Park , Bong-Gee Song , Young-Hak Kim , Byung-Tae Kang , Min-Cheol Park , In-Hyoung Kim , Hae-Dong Yeon
IPC分类号： H04L27/30
CPC分类号： H04B7/0845 , H04L1/0631 , H04L1/0656
摘要： An apparatus and method for canceling an interference signal in a broadband wireless communication system are provided. A receiver of a wireless communication system includes at least two receive antennas for receiving a target signal of a serving base station and interference signals of at least one neighbor base station; a channel estimator for estimating channels of the signals received through the receive antennas; and a detector for detecting the target signal using channel estimation values of the received signals. Accordingly, it is possible to reduce error propagation caused by the incorrect estimation and detection of the interference signal. In addition, time delay for detecting/restoring/removing the interference signal does not occur. Moreover, the increase of additional buffers can be prevented. Consequently, the increase of hardware complexity can be prevented.
摘要翻译：提供一种用于在宽带无线通信系统中消除干扰信号的装置和方法。无线通信系统的接收机包括用于接收服务基站的目标信号和至少一个相邻基站的干扰信号的至少两个接收天线; 用于估计通过接收天线接收的信号的信道的信道估计器; 以及检测器，用于使用所接收信号的信道估计值来检测目标信号。因此，可以减少由误差估计和干扰信号的检测引起的误差传播。此外，不发生用于检测/恢复/去除干扰信号的时间延迟。此外，可以防止额外的缓冲器的增加。因此，可以防止硬件复杂性的增加。

12. 发明授权

US07760791B2 Apparatus for communicating using UWB transmission 有权
标题翻译：使用UWB传输进行通信的设备
公开(公告)号：US07760791B2
公开(公告)日：2010-07-20
申请号：US11642981
申请日：2006-12-19
申请人： Mikio Oda , Yuki Yoshida
发明人： Mikio Oda , Yuki Yoshida
IPC分类号： H04L27/30
CPC分类号： H04L43/00 , H04B1/71632 , H04L43/045 , H04L43/0847
摘要： In one embodiment, an apparatus for communicating using UWB (ultra wideband) transmission includes a transmitter configured to transmit the UWB transmission; a receiver configured to receive the UWB transmission; and a monitor unit configured to present data representing a relationship between two types of parameters of the received UWB transmission.
摘要翻译：在一个实施例中，一种使用UWB（超宽带）传输进行通信的装置包括被配置为发送UWB传输的发射机; 接收器，被配置为接收所述UWB传输; 以及监视器单元，被配置为呈现表示所接收的UWB传输的两种类型的参数之间的关系的数据。

13. 发明授权

US07711031B2 Adaptive technique for inter-carrier-interference canceling in OFDM systems 有权
标题翻译： OFDM系统中载波间干扰消除的自适应技术
公开(公告)号：US07711031B2
公开(公告)日：2010-05-04
申请号：US11766814
申请日：2007-06-22
申请人： Mirette Sadek , Nabil Yousef
发明人： Mirette Sadek , Nabil Yousef
IPC分类号： H04L27/30
CPC分类号： H04L25/0216 , H04L1/0047 , H04L1/0054 , H04L25/0218 , H04L25/022 , H04L25/0232 , H04L25/0236 , H04L25/0244 , H04L25/03038 , H04L25/03286 , H04L2025/03414 , H04L2025/03496 , H04L2025/03522 , H04L2025/03617
摘要： ICI canceling in an OFDM system includes taking a FFT of a wireless electrical signal to produce an OFDM signal; estimating a DC component of a frequency-selective channel in the OFDM system; obtaining an initial estimate of data symbols associated with data bits of the OFDM signal; correcting the data bits with a Viterbi decoder; encoding the corrected data bits to acquire corrected data symbols; re-estimating the DC component of the frequency-selective channel using the corrected data symbols; filtering the corrected data symbols and sub-carrier of the frequency-selective channel; calculating a first order differential function of the frequency-selective channel based on successive ones of the corrected data symbols; removing an ICI component from the calculated first order differential function; and re-estimating the data symbols as a function of the removed ICI component. The filtering occurs using a low pass filter comprising a bank of eight filters.
摘要翻译： OFDM系统中的ICI取消包括对无线电信号进行FFT以产生OFDM信号; 估计所述OFDM系统中的频率选择信道的直流分量; 获得与所述OFDM信号的数据比特相关联的数据符号的初始估计; 用维特比解码器校正数据位; 编码校正的数据位以获取校正的数据符号使用校正的数据符号重新估计频率选择信道的DC分量; 对频率选择信道的校正数据符号和子载波进行滤波; 基于经校正的数据符号中的连续的一个，计算频率选择信道的一阶微分函数; 从计算的一阶微分函数中去除ICI分量; 并重新估计作为所移除的ICI分量的函数的数据符号。使用包括八个滤波器组的低通滤波器进行滤波。

14. 发明授权

US07711030B2 System and method for spatial-multiplexed tropospheric scatter communications 有权
标题翻译：空间复用对流层散射通信的系统和方法
公开(公告)号：US07711030B2
公开(公告)日：2010-05-04
申请号：US11256478
申请日：2005-10-21
申请人： Stephen G. Perlman
发明人： Stephen G. Perlman
IPC分类号： H04L27/30
CPC分类号： H04L1/0675 , H04B7/0684 , H04L1/0057 , H04L25/0206 , H04L25/0224 , H04L25/03343 , H04L2025/03414 , H04L2025/0377 , H04L2025/03802
摘要： A method is described comprising: transmitting a training signal from each antenna of a base station to each of a plurality of client devices utilizing tropospheric scatter, each of the client devices analyzing each training signal to generate channel characterization data, and transmitting the channel characterization data back to the base station utilizing tropospheric scatter; storing the channel characterization data for each of the plurality of client devices; receiving data to be transmitted to each of the client devices; and precoding the data using the channel characterization data associated with each respective client device to generate precoded data signals for each antenna of the base station; and transmitting the precoded data signals through each antenna of the base station to each respective client device.
摘要翻译：描述了一种方法，包括：使用对流层散射从基站的每个天线向每个客户端设备发送训练信号，每个客户端设备分析每个训练信号以产生信道表征数据，以及发送信道表征数据使用对流层散射回到基站; 存储所述多个客户端设备中的每一个的信道表征数据; 接收要发送到每个客户端设备的数据; 以及使用与每个相应客户端设备相关联的信道表征数据对所述数据进行预编码，以生成所述基站的每个天线的预编码数据信号; 以及通过基站的每个天线将预编码的数据信号发送到每个相应的客户机设备。

15. 发明授权

US07609750B2 Segment-wise channel equalization based data estimation 失效
标题翻译：基于分段信道均衡的数据估计
公开(公告)号：US07609750B2
公开(公告)日：2009-10-27
申请号：US12277918
申请日：2008-11-25
申请人： Jung-Lin Pan , Ariela Zeira
发明人： Jung-Lin Pan , Ariela Zeira
IPC分类号： H04L27/30
CPC分类号： H04B1/7105 , H04B1/707
摘要： Data is estimated of a plurality of received spread spectrum signals by a wireless communication apparatus. The plurality of received communications are received in a shared spectrum. The received communications are sampled to produce a received vector of sequential samples. The received vector is processed to produce a plurality of segments. Each segment is processed separately to estimate data of the received communications.
摘要翻译：通过无线通信装置估计多个接收的扩频信号的数据。多个接收到的通信在共享频谱中被接收。接收到的通信被采样以产生接收的连续采样矢量。处理所接收的矢量以产生多个段。每个段被单独处理以估计接收到的通信的数据。

16. 发明授权

US07586977B2 Transmission power control method, mobile station, and radio network controller 有权
标题翻译：传输功率控制方法，移动台和无线网络控制器
公开(公告)号：US07586977B2
公开(公告)日：2009-09-08
申请号：US11307974
申请日：2006-03-01
申请人： Masafumi Usuda , Anil Umesh , Takehiro Nakamura
发明人： Masafumi Usuda , Anil Umesh , Takehiro Nakamura
IPC分类号： H04L27/30
CPC分类号： H04W52/16 , H04L1/0002 , H04L1/0026 , H04L1/0057 , H04L1/1812 , H04W52/146 , H04W52/286
摘要： A transmission power control method for controlling transmission power of an enhanced dedicated physical data channel for transmitting uplink user data, includes: storing, at a mobile station, a reference transmission format including a transmission data block size which is used in the enhanced dedicated physical data channel, and a gain factor which is a transmission power ratio between the enhanced dedicated physical data channel and a dedicated physical control channel or which is a transmission wave amplitude ratio between the enhanced dedicated physical data channel and the dedicated physical control channel, calculating, at the mobile station, a gain factor of a normal transmission format based on the transmission data block size and the gain factor of the reference transmission format and the transmission data block size of the normal transmission format, and controlling, at the mobile station, a transmission power of enhanced dedicated physical data channel based on the gain factor of the reference transmission format or the normal transmission format. Here, a transmission data block size of the reference transmission format is larger than the smallest transmission data block size.
摘要翻译：一种用于控制用于发送上行用户数据的增强专用物理数据信道的发送功率的发送功率控制方法，包括：在移动台处存储包括在增强型专用物理数据中使用的发送数据块大小的参考发送格式信道，以及作为增强型专用物理数据信道与专用物理控制信道之间的发送功率比的增益因子，或增益专用物理数据信道与专用物理控制信道之间的发送波幅度比，移动站，基于传输数据块大小和参考传输格式的增益因子和正常传输格式的传输数据块大小的正常传输格式的增益因子，并且在移动站处控制传输基于增益fa的增强专用物理数据信道的功率参考传输格式或正常传输格式。这里，参考传输格式的传输数据块大小大于最小传输数据块大小。

17. 发明授权

US07492811B2 Method and system for fast acquisition of ultra-wideband signals 失效
标题翻译：用于快速采集超宽带信号的方法和系统
公开(公告)号：US07492811B2
公开(公告)日：2009-02-17
申请号：US11654021
申请日：2007-01-17
申请人： James L. Richards , Mark D. Roberts
发明人： James L. Richards , Mark D. Roberts
IPC分类号： H04L27/30
CPC分类号： H04B1/71637 , H04B1/7183 , H04B1/719 , H04B2001/6908
摘要： A system and method are provided that can detect any part of a multipath impulse radio signal. More specifically, the method compares a template pulse train and the multipath impulse radio signal to obtain a comparison result. The system performs a threshold check on the comparison result. If the comparison result passes the threshold check, the system locks onto any part of the multipath impulse radio signal including a direct path part and at least one multipath reflection part. The system may also perform a quick check, a synchronization check, and/or a command check of the multipath impulse radio signal.
摘要翻译：提供了可以检测多径脉冲无线电信号的任何部分的系统和方法。更具体地，该方法比较模板脉冲串和多径脉冲无线电信号以获得比较结果。系统对比较结果进行阈值检查。如果比较结果通过阈值检查，则系统锁定到包括直接路径部分和至少一个多径反射部分的多径脉冲无线电信号的任何部分上。系统还可以对多路径脉冲无线电信号执行快速检查，同步检查和/或命令检查。

18. 发明授权

US07483476B2 Method and system for utilizing space-time and space-frequency codes for multi-input multi-output frequency selective fading channels 有权
标题翻译：用于多输入多输出频率选择性衰落信道的空时和空频码的方法和系统
公开(公告)号：US07483476B2
公开(公告)日：2009-01-27
申请号：US11983590
申请日：2007-11-09
申请人： Hesham El-Gamal , A. Roger Hammons, Jr.
发明人： Hesham El-Gamal , A. Roger Hammons, Jr.
IPC分类号： H04L27/30
CPC分类号： H04B7/0669 , H04L1/04 , H04L1/0606 , H04L1/0618 , H04L1/0631 , H04L1/065
摘要： A communication system for transmitting encoded signals over a communication channel is disclosed. The system includes a transmitter, which has a source that outputs a message signal. The transmitter also includes an encoder that generates a code word in response to the message signal. The code word has a construction that defines a plurality of paths associated with an intersymbol interference (ISI) environment of the communication channel, wherein the code word achieves a diversity based upon the number of transmit antennas and the number of ISI paths. Further, the transmitter includes a modulator that modulates the code word for transmission over the communication channel, and multiple antennas that transmit the modulated code word over the communication channel. The system encompasses a receiver that receives the transmitted code word via a number of receive antennas.
摘要翻译：公开了一种用于通过通信信道发送编码信号的通信系统。该系统包括发射机，其具有输出消息信号的源。发射机还包括响应于消息信号产生码字的编码器。代码字具有定义与通信信道的符号间干扰（ISI）环境相关联的多个路径的结构，其中码字基于发射天线的数量和ISI路径的数量实现分集。此外，发射机包括调制器，用于调制通过通信信道传输的码字，以及通过通信信道发送调制码字的多个天线。该系统包括接收经由多个接收天线发送的码字的接收机。

19. 发明授权

US07436878B1 Method and apparatus for efficient carrier bin search for a composite spreading code 有权
标题翻译：用于复合扩展码的有效载波箱搜索的方法和装置
公开(公告)号：US07436878B1
公开(公告)日：2008-10-14
申请号：US11136943
申请日：2005-05-24
申请人： Johnny M. Harris , Samuel C. Kingston , Thomas R. Giallorenzi , Eric K. Hall , Richard B. Ertel
发明人： Johnny M. Harris , Samuel C. Kingston , Thomas R. Giallorenzi , Eric K. Hall , Richard B. Ertel
IPC分类号： H04L27/30
CPC分类号： H04L27/0014 , H04B1/70752 , H04B1/7087 , H04B1/7093 , H04L2027/0065
摘要： A matched filter decorrelator is described for efficiently performing a carrier frequency search while despreading a P/N long code constructed from two or more constituent codes such as codes A, B, C. The received signal is phase rotated into a frequency bin and partially despread, preferably over all but one of the constituent codes. To despread the final constituent code, the partially despread signal is input in parallel into frequency bins, where a phase rotator sets each input to a different bin. The frequency bins are then despread in parallel over the final constituent code, and an energy peak in one accumulator indicates which bin is the carrier frequency. Alternatively, a Fourier transform could be used over each of the frequency bins. By partially despreading prior to division into carrier frequency bins, hardware and computational burden are reduced as compared to prior art decorrelators. The present invention is particularly apt for use with an acquisition burst in a secure network.
摘要翻译：描述了匹配滤波器去相关器，用于有效地执行载波频率搜索，同时对从诸如码A，B，C的两个或更多个成分码构成的P / N长码进行解扩。所接收的信号被相位旋转到频率仓并部分解扩，优选除了一个组成代码之外。为了对最终的组成码进行解扩，部分解扩信号被并行地输入到频率仓中，其中相位旋转器将每个输入设置到不同的仓。然后，频率仓在最终组成码上并行地解扩，并且一个累加器中的能量峰值指示哪个bin是载波频率。或者，可以在每个频率仓上使用傅里叶变换。通过在划分为载波频率仓之前进行部分解扩，与现有技术的去相关器相比，硬件和计算负担减小。本发明特别适用于安全网络中的采集突发。

20. 发明授权

US07376171B2 Multiuser detection aided multiple access differential M-ary coding applications 有权
标题翻译：多用户检测辅助多路访问差分M进制编码应用
公开(公告)号：US07376171B2
公开(公告)日：2008-05-20
申请号：US10827462
申请日：2004-04-19
申请人： Diane G. Mills , Geoffrey S. Edelson , Dianne E. Egnor
发明人： Diane G. Mills , Geoffrey S. Edelson , Dianne E. Egnor
IPC分类号： H04L27/30
CPC分类号： H04B1/715 , H04B1/713 , H04B2001/7152
摘要： Techniques for multiple access differential M-ary coding applications that can be optionally aided by multiuser detection (MUD) are disclosed. An initial hopped feature decoding is performed to provide data estimates for each user represented in a received co-channel signal. Interference cancellation can then be performed using MUD, thereby providing an interference-cancelled signal. Data estimates remaining are then re-decoded. Iteration on the interference cancellation and re-decoding can be carried out to satisfy a particular rule of iteration, although iteration is not always necessary. The final decoded signal can then be provided to its destination.
摘要翻译：公开了可以由多用户检测（MUD）可选地辅助的用于多址差分M进制编码应用的技术。执行初始跳跃特征解码以为接收到的同频道信号中表示的每个用户提供数据估计。然后可以使用MUD执行干扰消除，从而提供干扰消除信号。然后重新解码剩余的数据估计。可以进行干扰消除和重新解码的迭代以满足特定的迭代规则，尽管迭代并不总是必需的。然后可以将最终的解码信号提供给其目的地。

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