公开(公告)号：US08503512B2

公开(公告)日：2013-08-06

申请号：US12755583

申请日：2010-04-07

申请人： Alpaslan Demir ,  Donald M. Grieco

发明人： Alpaslan Demir ,  Donald M. Grieco

IPC分类号： H04B1/00 ,  H04L27/06

CPC分类号： H04W56/00 ,  H04B1/7083 ,  H04J3/0608 ,  H04J11/0069 ,  H04W48/16

摘要： A method of generating an index value associated with a primary synchronization code within a communication signal includes splitting a sampled communication signal into even and odd samples. The even and odd samples are correlated with a primary synchronization code of the communication signal and complex values of the even and odd samples are generated. Signal strength values for the even and odd samples are approximated and the approximate signal strength values within a frame of the communication signal are accumulated. A highest accumulated signal strength value is assigned as an index value.

摘要翻译： 生成与通信信号内的主同步码相关联的索引值的方法包括将采样的通信信号分成偶数和奇数样本。 偶数和奇数样本与通信信号的主同步码相关，并产生偶数和奇数样本的复数值。 对偶数和奇数样本的信号强度值进行近似，并且累积通信信号的帧内的近似信号强度值。 分配最高累积信号强度值作为指标值。

公开(公告)号：US08149963B2

公开(公告)日：2012-04-03

申请号：US12185361

申请日：2008-08-04

申请人： Alpaslan Demir

发明人： Alpaslan Demir

IPC分类号： H04L27/06

CPC分类号： H04B1/14 ,  H03J2200/02 ,  H04B1/70735 ,  H04B1/708 ,  H04J11/0069 ,  H04L27/0014 ,  H04L2027/0024 ,  H04L2027/0065 ,  H04L2027/0091

摘要： A method and apparatus for use in connection with wireless communication to adjust the frequency of an oscillator to synchronize with a received signal by correlating a synchronization code channel with training sequences to estimate relative offsets which are employed to estimate an error, which is then filtered. The filtered output preferably provides a voltage controlling a voltage controlled oscillator (VCO). The same technique may be employed to control a numeric controlled oscillator (NCO).

摘要翻译： 一种用于无线通信的方法和装置，用于通过将同步码信道与训练序列相关联来估计用于估计错误的相对偏移量，从而对振荡器的频率进行调整，以使其与接收信号同步，然后滤波。 滤波后的输出优选地提供控制压控振荡器（VCO）的电压。 可以采用相同的技术来控制数控振荡器（NCO）。

公开(公告)号：US20120063373A1

公开(公告)日：2012-03-15

申请号：US13232367

申请日：2011-09-14

申请人： Amith V. Chincholi ,  Alpaslan Demir ,  Tanbir Haque

发明人： Amith V. Chincholi ,  Alpaslan Demir ,  Tanbir Haque

IPC分类号： H04J1/00 ,  H04W72/04

CPC分类号： H04W72/0446 ,  H04B7/00 ,  H04J1/00 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0044 ,  H04L5/0064 ,  H04L5/0071 ,  H04L5/14 ,  H04L5/143 ,  H04L27/0006 ,  H04L43/16 ,  H04W72/0413 ,  H04W72/042

摘要： A method and apparatus are described that provides flexible spectrum usage by using a paired frequency division duplex (FDD) spectrum to enable dynamic access in television white space (TVWS), sub-leased spectrum or unlicensed spectrum, (e.g., industrial, scientific and medical (ISM) bands), in a femto cell environment or the like. Elastic FDD (E-FDD) enables femto cell operation in TVWS, sub-leased spectrum and/or unlicensed spectrum, either simultaneously with licensed spectrum or as an alternate channel to licensed spectrum. E-FDD enables dynamic asymmetric bandwidth allocation for uplink (UL) and downlink (DL) in FDD, and enables variable duplex spacing, (i.e., using FDD with minimum duplex spacing between DL and UL spectrum, or, using hybrid-FDD, (FDD in a time duplexed fashion), when a spectrum gap between the UL and DL spectrum is below a certain minimum threshold. Additionally, the signaling enhancements to implement E-FDD are also provided.

摘要翻译： 描述了一种方法和装置，其通过使用成对的频分双工（FDD）频谱来实现灵活的频谱使用，以实现电视空白（TVWS），次租用频谱或非许可频谱（例如工业，科学和医学） （ISM）频带），在毫微微小区环境等中。 弹性FDD（E-FDD）使得能够在TVWS，子租用频谱和/或非许可频谱中的毫微微小区操作，或者与许可频谱同时或作为许可频谱的备用信道。 E-FDD实现了FDD中的上行链路（UL）和下行链路（DL）的动态非对称带宽分配，并且实现了可变双工间隔（即，使用DL和UL频谱之间具有最小双工间隔的FDD，或者使用混合FDD， FDD以时间双工方式），当UL和DL频谱之间的频谱间隔低于某个最小阈值时，还提供了实现E-FDD的信令增强。

公开(公告)号：US07813735B2

公开(公告)日：2010-10-12

申请号：US11688286

申请日：2007-03-20

申请人： Frederic Monfet ,  Alpaslan Demir ,  Mark L. Richards

发明人： Frederic Monfet ,  Alpaslan Demir ,  Mark L. Richards

IPC分类号： H04W4/00

CPC分类号： H04B1/7083 ,  H04B1/70735 ,  H04B2201/70707

摘要： A method and apparatus for performing a power efficient cell search in a multi-cell wireless communication system are disclosed. A wireless transmit/receive unit (WTRU) having a memory that stores a cell identification list of prioritized previously top-ranked cell identities (IDs) is used to perform the cell search. A primary synchronization code (PSC) correlation peak location on a received signal is selected. A common pilot channel (CPICH) correlation value is determined by non-coherent integration of a local signal created based on a first cell ID on the cell identification list to the received signal. If the CPICH correlation value is greater than a noise threshold, thus indicating that the first cell ID is a newly found cell ID, or if a last cell ID in the cell identification list is reached, an additional determination is made as to whether there is more than one cell ID on the list having the same timing.

摘要翻译： 公开了一种用于在多小区无线通信系统中执行功率有效的小区搜索的方法和装置。 具有存储器的存储器的无线发送/接收单元（WTRU）被用于执行小区搜索，所述存储器存储优先排序的先前排名最广的小区标识（ID）的小区标识列表。 选择接收信号上的主同步码（PSC）相关峰位置。 公共导频信道（CPICH）相关值通过基于小区识别列表上基于第一小区ID创建的本地信号与接收信号的非相干积分来确定。 如果CPICH相关值大于噪声阈值，则表示第一小区ID是新发现的小区ID，或者如果到达小区识别列表中的最后一个小区ID，则进一步确定是否存在 列表上的多个单元格ID具有相同的时序。

公开(公告)号：US07672398B2

公开(公告)日：2010-03-02

申请号：US12275806

申请日：2008-11-21

申请人： Alpaslan Demir ,  Leonid Kazakevich ,  Kenneth P. Kearney

发明人： Alpaslan Demir ,  Leonid Kazakevich ,  Kenneth P. Kearney

IPC分类号： H04L27/36 ,  H04L25/49 ,  H04B1/38

CPC分类号： H03C3/406 ,  H04B1/30

摘要： A method and system for determining amplitude and phase compensation values used to adjust the amplitude and phase characteristics of real and imaginary signal components of complex signals processed by an analog radio transmitter. The compensation values may be determined in response to detecting a significant temperature change in the transmitter. Corresponding amplitude and phase adjustment signals having levels that correspond to the compensation values are provided to respective amplitude and phase imbalance compensation modules to adjust the amplitude and phase characteristics of at least one of the real and imaginary signal components.

摘要翻译： 用于确定用于调整由模拟无线电发射机处理的复信号的实信号和虚信号分量的幅度和相位特性的幅度和相位补偿值的方法和系统。 可以响应于检测到发射器中的明显的温度变化来确定补偿值。 具有对应于补偿值的电平的对应幅度和相位调整信号被提供给相应的幅度和相位不平衡补偿模块，以调整实信号分量和虚信号分量中的至少一个的振幅和相位特性。

公开(公告)号：US20100020751A1

公开(公告)日：2010-01-28

申请号：US12571880

申请日：2009-10-01

申请人： Philip J. Pietraski ,  Alpaslan Demir ,  Donald M. Grieco

发明人： Philip J. Pietraski ,  Alpaslan Demir ,  Donald M. Grieco

IPC分类号： H04W4/00

CPC分类号： H04B1/70735 ,  H04B1/70755 ,  H04B1/7083 ,  H04B1/709 ,  H04B1/7103 ,  H04B2201/70707

摘要： A wireless transmit receive unit (WTRU) provides facilitation of cell search. In one embodiment, received samples are split into a plurality of sample sets for processing. Each of the sets is processed and an accumulated result is divided by an estimated noise value. In another embodiment, a code correlator correlates the received signal with a primary synchronization code and an auxiliary code correlator having a same length as the code correlator correlates the received signal with a code having a low cross correlation with the primary synchronization code. In another embodiment, a division of an accumulated result with a noise estimate is performed using indexes of the most significant bits.

摘要翻译： 无线发射接收单元（WTRU）提供小区搜索的便利。 在一个实施例中，将接收到的样本分成多个样本集进行处理。 处理每个集合，并将累积结果除以估计的噪声值。 在另一个实施例中，码相关器将接收的信号与主同步码相关，并且与码相关器具有相同长度的辅助码相关器将接收的信号与与主同步码具有低互相关的代码相关。 在另一个实施例中，使用最高有效位的索引来执行累积结果与噪声估计的分割。

公开(公告)号：US07570690B2

公开(公告)日：2009-08-04

申请号：US11265373

申请日：2005-11-02

申请人： Philip J. Pietraski ,  Mihaela Beluri ,  Alpaslan Demir ,  Jung-Lin Pan ,  Gregory S. Sternberg ,  Rui Yang ,  Bin Li

发明人： Philip J. Pietraski ,  Mihaela Beluri ,  Alpaslan Demir ,  Jung-Lin Pan ,  Gregory S. Sternberg ,  Rui Yang ,  Bin Li

IPC分类号： H03K5/08 ,  H04B1/10 ,  H03K5/159

CPC分类号： H04L25/03038 ,  H04B1/7097 ,  H04L27/0014 ,  H04L2025/03509 ,  H04L2025/03547 ,  H04L2025/03585 ,  H04L2025/03611 ,  H04L2025/03617 ,  H04L2025/03687 ,  H04L2027/003 ,  H04L2027/0038 ,  H04L2027/0065

摘要： An adaptive equalizer including an equalizer filter and a tap coefficients generator used to process a sample data stream derived from a plurality of received signals is disclosed. The tap coefficients generator includes an equalizer tap update unit, a vector norm square estimator, an active taps mask generator, a switch and a pilot amplitude reference unit used to minimize the dynamic range of the equalizer filter. A dynamic mask vector is used to mask active taps generated by the equalizer tap update unit when an unmasked signal output by the equalizer filter is selected by the switch to generate an error signal fed to the equalizer tap update unit. A fixed mask vector is used to mask active taps generated by the equalizer tap update unit when a masked signal output by the equalizer filter is used to generate the error signal.

摘要翻译： 公开了一种包括均衡器滤波器和用于处理从多个接收信号导出的采样数据流的抽头系数发生器的自适应均衡器。 抽头系数发生器包括均衡器抽头更新单元，矢量范数平方估计器，有源抽头掩码发生器，用于最小化均衡器滤波器的动态范围的开关和导频振幅参考单元。 当由开关选择由均衡器滤波器输出的未屏蔽信号以产生馈送到均衡器抽头更新单元的误差信号时，动态屏蔽矢量用于屏蔽均衡器抽头更新单元产生的有效抽头。 当使用由均衡器滤波器输出的屏蔽信号来产生误差信号时，固定屏蔽矢量用于屏蔽均衡器抽头更新单元产生的有源抽头。

公开(公告)号：US07376200B2

公开(公告)日：2008-05-20

申请号：US10739844

申请日：2003-12-18

申请人： Alpaslan Demir ,  Leonid Kazakevich ,  Tanbir Haque

发明人： Alpaslan Demir ,  Leonid Kazakevich ,  Tanbir Haque

IPC分类号： H04K1/02 ,  H04B17/00

CPC分类号： H04B1/30 ,  H03C3/406 ,  H04L2027/0016 ,  H04L2027/0018

摘要： A method and system for determining at least one DC offset compensation value used to suppress carrier leakage occurring on real and imaginary signal paths in an analog radio transmitter when a significant temperature change in the transmitter is detected. At least one DC offset signal having a level that corresponds to the at least one DC offset compensation value is provided to a digital DC offset compensation module which adjusts the DC level of at least one of the real and imaginary signal paths.

摘要翻译： 一种用于在检测到发射机中的明显的温度变化时，确定至少一个DC偏移补偿值用于抑制在模拟无线电发射机的实信号路径和虚信号路径上发生的载波泄漏的方法和系统。 具有对应于至少一个DC偏移补偿值的电平的至少一个DC偏移信号被提供给数字DC偏移补偿模块，其调整实信号路径和虚信号路径中的至少一个的DC电平。

公开(公告)号：US20070291730A1

公开(公告)日：2007-12-20

申请号：US11688286

申请日：2007-03-20

申请人： Frederic Monfet ,  Alpaslan Demir ,  Mark Richards

发明人： Frederic Monfet ,  Alpaslan Demir ,  Mark Richards

IPC分类号： H04J3/06 ,  H04B7/26

CPC分类号： H04B1/7083 ,  H04B1/70735 ,  H04B2201/70707

摘要： A method and apparatus for performing a power efficient cell search in a multi-cell wireless communication system are disclosed. A wireless transmit/receive unit (WTRU) having a memory that stores a cell identification list of prioritized previously top-ranked cell identities (IDs) is used to perform the cell search. A primary synchronization code (PSC) correlation peak location on a received signal is selected. A common pilot channel (CPICH) correlation value is determined by non-coherent integration of a local signal created based on a first cell ID on the cell identification list to the received signal. If the CPICH correlation value is greater than a noise threshold, thus indicating that the first cell ID is a newly found cell ID, or if a last cell ID in the cell identification list is reached, an additional determination is made as to whether there is more than one cell ID on the list having the same timing.

摘要翻译： 公开了一种用于在多小区无线通信系统中执行功率有效的小区搜索的方法和装置。 具有存储器的存储器的无线发送/接收单元（WTRU）被用于执行小区搜索，所述存储器存储优先排序的先前排名最广的小区标识（ID）的小区标识列表。 选择接收信号上的主同步码（PSC）相关峰位置。 公共导频信道（CPICH）相关值通过基于小区识别列表上基于第一小区ID创建的本地信号与接收信号的非相干积分来确定。 如果CPICH相关值大于噪声阈值，则表示第一小区ID是新发现的小区ID，或者如果到达小区识别列表中的最后一个小区ID，则进一步确定是否存在 列表上的多个单元格ID具有相同的时序。

公开(公告)号：US07308258B2

公开(公告)日：2007-12-11

申请号：US10764087

申请日：2004-01-23

申请人： Alpaslan Demir ,  Donald M. Grieco ,  John W. Haim ,  Andrew F. Bednarz

发明人： Alpaslan Demir ,  Donald M. Grieco ,  John W. Haim ,  Andrew F. Bednarz

IPC分类号： H04Q7/20

CPC分类号： H04W48/10 ,  H04W48/02 ,  H04W48/16 ,  H04W56/00

摘要： A method and system for performing initial cell search in wireless communication system wherein unsuitable cells are excluded is disclosed. Stored frequencies are searched exhaustively and initial frequencies are search non-exhaustively. Initial frequencies may be searched exhaustively in certain circumstances. When performing exhaustive initial cell searches, primary synchronization codes that lead to unsuitable cells are excluded from subsequent initial cell searches performed on the same frequency.

摘要翻译： 公开了一种在无线通信系统中执行初始小区搜索的方法和系统，其中排除不适合的小区。 存储的频率被彻底地搜索，初始频率被非穷尽地搜索。 在某些情况下，可能会彻底地搜索初始频率。 当执行穷尽的初始小区搜索时，导致不适合小区的主同步码被排除在对相同频率执行的后续初始小区搜索中。