公开(公告)号：US20100226356A1

公开(公告)日：2010-09-09

申请号：US12652337

申请日：2010-01-05

申请人： Mustafa E. Sahin ,  Ismail Guvenc ,  Huseyin Arslan

发明人： Mustafa E. Sahin ,  Ismail Guvenc ,  Huseyin Arslan

IPC分类号： H04L27/00 ,  H04B7/208 ,  H04B7/216 ,  H04B1/10 ,  H04B1/69

CPC分类号： H04L27/2647 ,  H04J11/004 ,  H04J11/0066 ,  H04L5/0007 ,  H04L25/0204 ,  H04L25/0212 ,  H04L25/0224 ,  H04L25/03821

摘要： In a co-channel deployment of narrowband and multi-carrier technologies (e.g., a femtocell and a macrocell), a method provides cancelling of interference which treats the co-channel signals as desired signals and enhances each of them iteratively. At each iteration, each signal is demodulated and regenerated based on symbol decisions already made and a predetermined channel impulse response. To estimate the other (interfering) co-channel signal, the regenerated signal is subtracted from the aggregate signal. Simulations have shown that a method of the present invention can provide fundamental improvement in the performances of both interfering systems in as few as two iterations. The fundamental performance gain that can be obtained outweigh the required computational burden.

摘要翻译： 在窄带和多载波技术（例如，毫微微小区和宏小区）的协同信道部署中，一种方法提供了将对等信道信号作为所需信号的干扰的取消，并且迭代地增强了每个信道。 在每次迭代中，基于已经做出的符号决定和预定的信道脉冲响应来解调和再生每个信号。 为了估计另一个（干扰）同信道信号，从聚合信号中减去再生信号。 模拟已经表明，本发明的方法可以在两次迭代中提供两个干扰系统的性能的基本改进。 可以获得的基本性能增益超过所需的计算负担。

公开(公告)号：US20070133387A1

公开(公告)日：2007-06-14

申请号：US11608441

申请日：2006-12-08

申请人： Huseyin Arslan ,  Mustafa Sahin

发明人： Huseyin Arslan ,  Mustafa Sahin

IPC分类号： H04J11/00

CPC分类号： H04L27/0004 ,  H04B1/719 ,  H04L27/2602

摘要： The present invention provides a system and method for transmitting an ultrawideband (UWB) signal that is composed of an orthogonal frequency-division multiplexing (OFDM) based signal that is transmitted in an underlay manner and an impulse radio based signal that is transmitted in an overlay manner. The system and method are effective in determining an interference temperature for each of multiple carriers within the UWB signal and classifying each one of the multiple carriers of the channel as being an interfered carrier or a non-interfered carrier based on the interference temperature for each one of multiple carriers. The desired signal is then transmitted on the interfered carriers at a signal power that is not greater than the power limit of the underlay UWB policy and on the non-interfered carriers at a signal power that is greater than the power limit of the underlay UWB policy.

摘要翻译： 本发明提供了一种用于发送超宽带（UWB）信号的系统和方法，所述超宽带（UWB）信号由基于正交频分复用（OFDM）的基于信号的信号组成，并且以叠加方式发射的基于脉冲无线电的信号 方式。 该系统和方法有效地确定UWB信号内的多个载波中的每个载波的干扰温度，并且基于每一个的干扰温度将信道的多个载波中的每个载波分类为干扰载波或非干扰载波 的多个运营商。 然后在受干扰的载波上以不大于底层UWB策略的功率限制的信号功率和在大于UWB策略的功率限制的信号功率的非干扰载波上的干扰载波上发送所需信号 。

公开(公告)号：US07031411B2

公开(公告)日：2006-04-18

申请号：US09956443

申请日：2001-09-19

申请人： Huseyin Arslan ,  Ali S. Khayrallah

发明人： Huseyin Arslan ,  Ali S. Khayrallah

IPC分类号： H04L25/08

CPC分类号： H04L25/03006 ,  H04L25/03267 ,  H04L25/03993 ,  H04L2025/03426 ,  H04W56/001 ,  H04W92/10

摘要： Methods and apparatus for canceling co-channel interference in a receiving system using spatio-temporal whitening. In some embodiments, a spatio-temporal interference canceling method, and apparatus for carrying out the method are provided which effectively cancel co-channel interference despite frequency offset between the desired signal and the interferer in a TDMA type system. Real and imaginary component values of the total received signal are used for virtual diversity branches, and a vector-valued auto regressive model is used to characterize the interference. In other embodiments, spatio-temporal interference whitening is used to improve timing estimates used for synchronization. The two uses of spatio-temporal whitening can be combined in one receiver. The invention is typically implemented in one or more programmed digital signal processors or application specific integrated circuits (ASICS), embodied in a receiving system.

公开(公告)号：US10849526B1

公开(公告)日：2020-12-01

申请号：US15783643

申请日：2017-10-13

申请人： Ali Fatih Demir ,  Ismail Uysal ,  Huseyin Arslan

发明人： Ali Fatih Demir ,  Ismail Uysal ,  Huseyin Arslan

IPC分类号： A61B5/0484 ,  A61B5/04 ,  A61B5/00

摘要： A system and method of steady-state visual evoked potential (SSVEP) frequency detection using bio-inspired filter banks (BIFB) includes, acquiring electroencephalographic (EEG) signals from a subject in response to a repetitive visual stimulus, estimating the power spectral density (PSD) of the channel of the EEG signals including at least one SSVEP response, extracting one or more SSVEP response features from the estimated PSD of the channel using a bio-inspired filter bank (BIFB) and classifying the extracted SSVEP response features to determine if the detected SSVEP response frequency from the EEG signals acquired from the subject substantially matches the repetition frequency of the repetitive visual stimulus.

公开(公告)号：US10714836B1

公开(公告)日：2020-07-14

申请号：US16231583

申请日：2018-12-23

申请人： Murat Karabacak ,  Gokhan Mumcu ,  Huseyin Arslan

发明人： Murat Karabacak ,  Gokhan Mumcu ,  Huseyin Arslan

IPC分类号： H01Q15/00 ,  H04B7/0456 ,  H01Q15/04

摘要： Various examples are provided related to hybrid multiple-input/multiple-output (MIMO) architectures. Beam steering can be provided using lens arrays. In one example, a hybrid antenna system includes a plurality of lens antenna subarrays (LAS), each of the LAS including a plurality of antenna elements configured to selectively receive a radio frequency (RF) transmission signal from RF processing circuitry, and a lens extending across the plurality of antenna elements. The RF transmission signal can be provided to a selected antenna of the plurality of antenna elements via a switching network and a common phase shifter for transmission. The lens can be configured to steer a RF transmission generated by the selected antenna in a defined direction. The selected antenna can be determined by the switching network configuration.

公开(公告)号：US20180152229A1

公开(公告)日：2018-05-31

申请号：US15827813

申请日：2017-11-30

申请人： Mohammed Hafez ,  Huseyin Arslan ,  Tamer Khattab

发明人： Mohammed Hafez ,  Huseyin Arslan ,  Tamer Khattab

IPC分类号： H04B7/0456 ,  H04B7/06 ,  H01Q3/26 ,  H01Q21/24

CPC分类号： H04B7/0456 ,  H01Q3/26 ,  H01Q3/28 ,  H01Q3/40 ,  H01Q21/245 ,  H01Q25/00 ,  H04B7/0617 ,  H04B7/0697

摘要： Method and system for transmitting a directionally modulated data stream via an antenna array. A first signal processing circuitry receives a data symbol of a first data stream, maps the first data stream to a specified number of sub-beams based on a stream beam-width assignment, assigns a direction angle for transmission of the data stream, and transmits in parallel, for each of the specified number of sub-beams, an instance of the data symbol to a second signal processing circuitry. The second signal processing circuitry generates antenna array element weights based on the data symbol and a matrix having a DFT structure. The matrix is independent of the assigned direction angle. The data symbol is transmitted via the antenna array utilizing the antenna array element weights. The DFT is implemented as a fast Fourier transform. White noise is transmitted in the sub-beams beams outside the beam-width requirement of the data stream.

公开(公告)号：US09826541B1

公开(公告)日：2017-11-21

申请号：US14755841

申请日：2015-06-30

申请人： Richard Dennis Gitlin ,  Zygmunt J. Haas ,  Huseyin Arslan ,  Gabriel Eduardo Arrobo ,  Chao He

发明人： Richard Dennis Gitlin ,  Zygmunt J. Haas ,  Huseyin Arslan ,  Gabriel Eduardo Arrobo ,  Chao He

IPC分类号： H04W72/04 ,  H04W72/12 ,  H04W24/02 ,  H04W88/02

CPC分类号： H04W72/1236

摘要： The present invention provides a novel rate adaptation algorithm and QoS-aware MAC scheduling system and method that either maximizes user satisfaction or maximizes spectrum utilization while maintaining user satisfaction by trading off the spectral resource allocations of connections for the application-level QoS based on the user-specific requirements. An adaptive scheduler is presented that incorporates user specific QoS requirements in the spectral allocation of resources.

公开(公告)号：US09780985B1

公开(公告)日：2017-10-03

申请号：US15151998

申请日：2016-05-11

申请人： Anas Tom ,  Alphan Sahin ,  Huseyin Arslan

发明人： Anas Tom ,  Alphan Sahin ,  Huseyin Arslan

IPC分类号： H04K1/10 ,  H04L27/26 ,  H04L5/00 ,  H04B15/00 ,  H04B17/336

CPC分类号： H04L27/2614 ,  H04B15/00 ,  H04B17/26 ,  H04B17/309 ,  H04B17/336 ,  H04B17/345 ,  H04B17/354 ,  H04B17/364 ,  H04B17/3912 ,  H04L5/0007

摘要： Various examples are provided for OOB interference and/or PAPR reduction in OFDM systems. In one example, a method includes generating a suppressing signal using channel state information (CSI) of a communication channel, where the length of the suppressing signal equals that of the OFDM symbol including a cyclic prefix (CP) and data portion; combining the OFDM symbol and the suppressing signal to generate a transmission signal, where the length of the suppressing signal is aligned with the length of the OFDM symbol; and communicating the transmission signal via the communication channel, which reduces and substantially aligns the length of the suppressing signal with a length of the CP at a receiving device. The CP and suppressing signal can be removed from the transmitted signal at the receiver using a CP removal matrix. In another example, a transmitting device includes OFDM encoding, signal suppression, combining circuitry to generate the transmission signal.

公开(公告)号：US09319253B2

公开(公告)日：2016-04-19

申请号：US13680306

申请日：2012-11-19

申请人： Alphan Sahin ,  Huseyin Arslan

发明人： Alphan Sahin ,  Huseyin Arslan

IPC分类号： H04L25/03 ,  H04L27/00 ,  H04L27/26 ,  H04L5/00

CPC分类号： H04L25/03828 ,  H04L5/0007 ,  H04L25/0384 ,  H04L27/00 ,  H04L27/2634 ,  H04L27/2647

摘要： Various methods and systems are provided for edge windowing of orthogonal frequency division multiplexing (OFDM) systems. In one example, among others, a method includes obtaining an edge windowing portion by reducing a cyclic prefix size for a quantity of edge subcarriers in an OFDM symbol and reducing side lobes by applying a windowing function to the edge subcarriers. In another example, a device includes a separator capable of dividing subcarriers of an OFDM symbol into first and second subcarrier groups, a first CP adder capable of obtaining a windowing portion by adjusting a cyclic prefix size of the first subcarrier group, and a first windower capable of reducing side lobes by applying a windowing function to the first subcarrier group. In another example, a method includes determining a RMS delay spread of a mobile station and scheduling a subcarrier based at least in part upon the RMS delay spread.

摘要翻译： 提供了用于正交频分复用（OFDM）系统的边缘加窗的各种方法和系统。 在一个示例中，其中一个方法包括通过减少OFDM符号中的边缘子载波量的循环前缀大小来获得边缘加窗部分，并且通过对边缘子载波应用加窗函数来减少旁瓣。 在另一示例中，设备包括能够将OFDM符号的子载波划分为第一和第二子载波组的分离器，能够通过调整第一子载波组的循环前缀大小而获得加窗部分的第一CP加法器，以及第一加法器 能够通过对第一子载波组施加加窗函数来减少旁瓣。 在另一示例中，一种方法包括确定移动台的RMS延迟扩展，并且至少部分地基于RMS延迟扩展来调度子载波。

公开(公告)号：US09065710B1

公开(公告)日：2015-06-23

申请号：US14069652

申请日：2013-11-01

申请人： Ertugrul Guvenkaya ,  Alphan Sahin ,  Huseyin Arslan

发明人： Ertugrul Guvenkaya ,  Alphan Sahin ,  Huseyin Arslan

IPC分类号： H04L27/26 ,  H04B1/10

CPC分类号： H04B1/1027 ,  H04L5/0048

摘要： Disclosed are various embodiments that are directed towards distinguishing between various types of interference in an orthogonal frequency division multiplexing (OFDM) wireless communication system. According to some embodiments, the system receives a set of symbols encoded in a predetermined subcarrier activation pattern according to an OFDM protocol. The system may determine a plurality of time averaged interference values, each time averaged interference value corresponding to a respective subcarrier index expressed in the set of symbols. Then, the system may separate frequency-based interference from time-based interference according to the plurality of time averaged interference values.

摘要翻译： 公开了旨在区分正交频分复用（OFDM）无线通信系统中的各种类型的干扰的各种实施例。 根据一些实施例，系统根据OFDM协议接收以预定子载波激活模式编码的一组符号。 系统可以确定多个时间平均干扰值，每次平均干扰值对应于在该组符号中表示的相应子载波索引。 然后，系统可以根据多个时间平均干扰值将基于频率的干扰与基于时间的干扰分离。