公开(公告)号：US6108517A

公开(公告)日：2000-08-22

申请号：US901694

申请日：1997-07-28

申请人： Huseyin Arslan ,  Someshwar C. Gupta ,  Gregory E. Bottomley ,  Sandeep Chennakeshu

发明人： Huseyin Arslan ,  Someshwar C. Gupta ,  Gregory E. Bottomley ,  Sandeep Chennakeshu

IPC分类号： H04J1/12 ,  H04B1/10 ,  H04B7/26 ,  H04L25/02 ,  H04L25/03 ,  H04Q7/36 ,  H04B7/10

CPC分类号： H04L25/03331 ,  H04L25/0204

摘要： Methods and apparatus for receiving adjacent channel signals wherein adjacent channel interference effects are minimized through joint demodulation of the adjacent channel signals. A channel associated with each signal and each corresponding frequency band is estimated and used to form joint branch metrics for joint sequence estimation. In an exemplary embodiment, a baseband processor receives baseband samples corresponding to at least one carrier frequency, and then jointly demodulates at least two information streams corresponding to different carrier frequencies in dependence upon the received baseband samples. In another embodiment, a joint channel estimator receives at least two baseband sample streams, each stream corresponding to a different frequency band, and jointly estimates medium responses for each of at least two information signals which were transmitted in different frequency bands.

摘要翻译： 用于接收相邻信道信号的方法和装置，其中相邻信道干扰效应通过相邻信道信号的联合解调被最小化。 与每个信号和每个对应的频带相关联的信道被估计并用于形成用于联合序列估计的联合分支度量。 在示例性实施例中，基带处理器接收对应于至少一个载波频率的基带采样，然后根据所接收的基带采样，共同解调对应于不同载波频率的至少两个信息流。 在另一个实施例中，联合信道估计器接收对应于不同频带的每个流的至少两个基带采样流，并联合估计在不同频带中发送的至少两个信息信号中的每一个的媒体响应。

公开(公告)号：US06775340B1

公开(公告)日：2004-08-10

申请号：US09687500

申请日：2000-10-13

申请人： Huseyin Arslan ,  Rajaram Ramesh ,  Gregory E. Bottomley

发明人： Huseyin Arslan ,  Rajaram Ramesh ,  Gregory E. Bottomley

IPC分类号： H04L700

CPC分类号： H04L25/0236 ,  H04B2201/70701 ,  H04L7/04 ,  H04L25/03337

摘要： A mobile communications system receiver has improved synchronization and channel estimation for receiving a transmitted signal passing through a radio channel. A processor receives and samples the transmitted signal for a plurality of timing hypotheses. A channel estimator hypothesizes unknown symbols at a pilot cluster of the sampled signal and estimates the radio channel of the pilot cluster for each hypothesized symbol sequence. The estimator determines an error corresponding to each hypothesized symbol sequence using the sampled signal, the estimated radio channel and the hypothesized symbols and determines actual timing estimates and actual radio channel estimates by selecting the radio channel estimates associated with the hypothesized symbols and the timing and hypothesis that minimizes the error.

摘要翻译： 移动通信系统接收机具有改进的同步和信道估计，用于接收通过无线电信道的发射信号。 处理器接收并采样所发送的信号用于多个定时假设。 信道估计器假设在采样信号的导频簇处的未知符号，并且针对每个假设的符号序列估计导频簇的无线电信道。 估计器使用采样信号，估计无线电信道和假设符号来确定与每个假设符号序列相对应的误差，并且通过选择与假设符号相关联的无线电信道估计以及时间和假设来确定实际的定时估计和实际的无线电信道估计 这最小化了错误。

公开(公告)号：US06832080B1

公开(公告)日：2004-12-14

申请号：US09660050

申请日：2000-09-12

申请人： Huseyin Arslan ,  Karl James Molnar ,  Gregory E. Bottomley ,  Ali S. Khayrallah

发明人： Huseyin Arslan ,  Karl James Molnar ,  Gregory E. Bottomley ,  Ali S. Khayrallah

IPC分类号： H04B110

CPC分类号： H04B1/0003 ,  H04B1/1027 ,  H04B1/7105 ,  H04B2201/7071 ,  H04L1/0001 ,  H04L25/03178 ,  H04L25/03305 ,  H04L25/03331

摘要： An adaptive radio receiver utilizes control functions derived from received signals in an interference-limited environment to decide whether to implement conventional single-user demodulation or joint demodulation. The decision to implement joint or conventional demodulation is based upon the values of estimates derived for Doppler spread, carrier-to-interference plus noise, dispersiveness and the likelihood of the presence of a dominant interferer.

摘要翻译： 自适应无线电接收机利用在受干扰限制的环境中从接收信号导出的控制功能来决定是否实施传统的单用户解调或联合解调。 实施联合或常规解调的决定基于针对多普勒扩展，载波干扰加噪声，分散性和存在显着干扰源的可能性的估计值。

公开(公告)号：US10476705B2

公开(公告)日：2019-11-12

申请号：US16417009

申请日：2019-05-20

申请人： Berker Pekoz ,  Selcuk Kose ,  Huseyin Arslan

发明人： Berker Pekoz ,  Selcuk Kose ,  Huseyin Arslan

IPC分类号： H04L25/03 ,  H04L25/02 ,  H04L27/26 ,  H04W72/08 ,  H04B1/10 ,  H04L5/00

摘要： Adaptive windowing of insufficient cyclic prefix (CP) for joint minimization of intersymbol interference (ISI) and adjacent channel interference (ACI) is provided. The proposed subcarrier specific windowing scheme improves the signal-to-interference ratio (SIR) even when the cyclic prefix (CP) is insufficient. Average optimal window lengths depend only on the power density profiles (PDPs), and although instantaneous optimal window lengths depend on users' channel impulse responses (CIRs), fluctuation is little. Therefore, subcarrier specific windowing outperforms fixed windowing, even with outdated window lengths in the case of powerful interferers.

公开(公告)号：US20190280905A1

公开(公告)日：2019-09-12

申请号：US16417009

申请日：2019-05-20

申请人： Berker Pekoz ,  Selcuk Kose ,  Huseyin Arslan

发明人： Berker Pekoz ,  Selcuk Kose ,  Huseyin Arslan

IPC分类号： H04L25/03 ,  H04L25/02 ,  H04L27/26 ,  H04B1/10 ,  H04W72/08

摘要： Adaptive windowing of insufficient cyclic prefix (CP) for joint minimization of intersymbol interference (ISI) and adjacent channel interference (ACI) is provided. The proposed subcarrier specific windowing scheme improves the signal-to-interference ratio (SIR) even when the cyclic prefix (CP) is insufficient. Average optimal window lengths depend only on the power density profiles (PDPs), and although instantaneous optimal window lengths depend on users' channel impulse responses (CIRs), fluctuation is little. Therefore, subcarrier specific windowing outperforms fixed windowing, even with outdated window lengths in the case of powerful interferers.

公开(公告)号：US10411819B1

公开(公告)日：2019-09-10

申请号：US16024051

申请日：2018-06-29

申请人： Ali Faith Demir ,  Huseyin Arslan

发明人： Ali Faith Demir ,  Huseyin Arslan

IPC分类号： H04B17/336 ,  H04J11/00 ,  H04W72/08 ,  H04L5/00 ,  H04W72/04

摘要： A system and method for reducing the OFDM out-of-band emissions (OOBE) by utilizing a transmitter windowing operation that smooths the inherent rectangular pulse shape of the OFDM signals. The technique retains the main design of the OFDM receivers and provides backward compatibility for the existing OFDM-based systems. The guard band and the window parameters that control the guard duration are jointly optimized regarding the use case and the power offset between the users. To fully exploit and further increase the potential of adaptive guards, an interference-based scheduling algorithm is proposed as well.

公开(公告)号：US20190199384A1

公开(公告)日：2019-06-27

申请号：US16223198

申请日：2018-12-18

申请人： Berker Pekoz ,  Selcuk Kose ,  Huseyin Arslan

发明人： Berker Pekoz ,  Selcuk Kose ,  Huseyin Arslan

IPC分类号： H04B1/10 ,  H04L27/26 ,  H04B17/336

摘要： A system and method for adaptively utilizing transmitter windowing, receiver windowing and alignment signals for minimizing interference and maximizing capacity and energy efficiency based upon the received power ratios of links in adjacent bands of a cellular communication network.

公开(公告)号：US20190199383A1

公开(公告)日：2019-06-27

申请号：US16167034

申请日：2018-10-22

申请人： Berker Pekoz ,  Selcuk Kose ,  Huseyin Arslan

发明人： Berker Pekoz ,  Selcuk Kose ,  Huseyin Arslan

IPC分类号： H04B1/10 ,  H04L27/26 ,  H04B17/336

CPC分类号： H04B1/1027 ,  H04B17/336 ,  H04B2001/1045 ,  H04L5/0007 ,  H04L27/2607 ,  H04L27/2614 ,  H04L27/2628

摘要： A system and method for adaptively utilizing transmitter windowing, receiver windowing and alignment signals for minimizing interference and maximizing capacity and energy efficiency based upon the received power ratios of links in adjacent bands of a cellular communication network.

公开(公告)号：US09363127B1

公开(公告)日：2016-06-07

申请号：US14530162

申请日：2014-10-31

申请人： Ertugrul Guvenkaya ,  Huseyin Arslan

发明人： Ertugrul Guvenkaya ,  Huseyin Arslan

IPC分类号： H04K1/10 ,  H04L27/28 ,  H04L27/26

CPC分类号： H04L27/2647 ,  H04L25/03821 ,  H04L25/03834 ,  H04L27/2626 ,  H04L27/2637 ,  H04L27/2653

摘要： An optimum time domain windowing scheme for orthogonal frequency-division multiplexing (OFDM)-based waveforms in the sense of spectral concentration is proposed. Instead of evenly suppressing the sidelobes along the frequency, the sidelobe power is concentrated within a guard band while maximally suppressing the power for a desired frequency range. This is achieved by employing optimum finite duration pulses, prolate spheroidal wave functions (PSWF), to shape the OFDM transmit pulse. Also with per-subcarrier windowing scheme, the effect of inner subcarriers on sidelobes is diminished by utilizing the concentration bandwidth versus out-of-band power trade-off in PSWF and the multicarrier nature of the OFDM.

摘要翻译： 提出了在频谱浓度意义上的基于正交频分复用（OFDM）的波形的最佳时域加窗方案。 代替均匀地抑制沿着频率的旁瓣，旁瓣功率集中在保护带内，同时最大限度地抑制期望频率范围的功率。 这是通过采用最佳有限持续时间脉冲，扁平球形波函数（PSWF）来实现的，以形成OFDM发射脉冲。 同样采用每子载波加窗方案，通过利用集中带宽与PSWF中的带外功率权衡和OFDM的多载波特性，内部副载波对旁瓣的影响减小。

公开(公告)号：US07956807B1

公开(公告)日：2011-06-07

申请号：US12018509

申请日：2008-01-23

申请人： Hasari Celebi ,  Huseyin Arslan

发明人： Hasari Celebi ,  Huseyin Arslan

IPC分类号： G01S3/02

CPC分类号： G01S5/14 ,  G01S5/0205 ,  G01S11/08

摘要： This invention provides arbitrary positioning accuracy for cognitive radio communications in both indoor and outdoor environments adaptively. It enables the user or wireless device itself to adjust positioning accuracy adaptively. Hence, this invention can be used for developing numerous personal, commercial, governmental and military cognitive location-based services and applications. Furthermore, the invented H-DSM technique can be used by cognitive wireless networks and devices to improve spectrum efficiency.

摘要翻译： 本发明适用于室内和室外认知无线电通信的任意定位精度。 它使用户或无线设备本身能够自适应地调整定位精度。 因此，本发明可用于开发许多个人，商业，政府和军事认知基于位置的服务和应用。 此外，本发明的H-DSM技术可以被认知无线网络和设备用于提高频谱效率。