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1. 发明授权

US08340060B2 OFDMA-based co-channel femtocell 有权
标题翻译：基于OFDMA的同信道毫微微小区
公开(公告)号：US08340060B2
公开(公告)日：2012-12-25
申请号：US12333138
申请日：2008-12-11
申请人： Mustafa Emin Sahin , Huseyin Arslan , Ismail Guvenc , Moo Ryong Jeong
发明人： Mustafa Emin Sahin , Huseyin Arslan , Ismail Guvenc , Moo Ryong Jeong
IPC分类号： H04W4/00
CPC分类号： H04W72/082 , H04L5/0007 , H04L5/0033 , H04L5/0037 , H04L5/0044 , H04L5/0062 , H04L5/0092 , H04W16/32 , H04W72/0426 , H04W84/045
摘要： A femtocell increases efficiency and coverage of a macrocellular network operating in a co-channel manner within the macrocell spectrum by selecting subcarriers for its mobile station using both the subcarrier allocation map received from the macrocell and a spectrum sensing operation. Interference is avoided by selecting only subcarriers not allocated by the macrocell and subcarriers allocated to users not nearby to the femtocell. Interference is eliminated from the received signals using co-channel interference avoidance techniques. Selection of subcarriers for femtocell use may take into consideration inter-carrier interference detected.
摘要翻译：毫微微小区通过使用从宏小区接收的副载波分配图和频谱感测操作来选择用于其移动台的子载波来增加在宏小区频谱内以同信道方式工作的宏蜂窝网络的效率和覆盖。通过仅选择未由宏小区分配的子载波和分配给不在毫微微小区附近的用户的子载波来避免干扰。使用同信道干扰避免技术从接收到的信号中消除干扰。毫微微小区使用的子载波的选择可以考虑检测到的载波间干扰。

2. 发明授权

US07652979B2 Cognitive ultrawideband-orthogonal frequency division multiplexing 有权
标题翻译：认知超宽带正交频分复用
公开(公告)号：US07652979B2
公开(公告)日：2010-01-26
申请号：US11608441
申请日：2006-12-08
申请人： Huseyin Arslan , Mustafa Emin Sahin
发明人： Huseyin Arslan , Mustafa Emin 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。

3. 发明授权

US08238463B1 Reception and measurement of MIMO-OFDM signals with a single receiver 有权
标题翻译：用单个接收机接收和测量MIMO-OFDM信号
公开(公告)号：US08238463B1
公开(公告)日：2012-08-07
申请号：US12139887
申请日：2008-06-16
申请人： Huseyin Arslan , Mustafa Emin Sahin
发明人： Huseyin Arslan , Mustafa Emin Sahin
IPC分类号： H04L1/02 , H04L27/22 , H03D1/24
CPC分类号： H04L1/0668 , H04B7/0413 , H04B7/0669 , H04L1/0606 , H04L1/0631 , H04L5/0023 , H04L5/0048 , H04L25/0204 , H04L25/0226 , H04L27/2647 , H04L27/2655
摘要： A method of receiving Multiple Input Multiple Output—Orthogonal Frequency Division Multiple Accessing (MIMO-OFDMA) signals using a single receiver rather than multiple receivers and performing measurements specific to various parts of MIMO-OFDMA systems using all measurable parameters of MIMO-OFDMA systems is disclosed. In addition, a method of receiving and completing impairment estimation of WiMAX MIMO signals using a single receiver according to the IEEE 802.16 standards is provided.
摘要翻译：使用单个接收机而不是多个接收机来接收多输入多输出正交频分多址（MIMO-OFDMA）信号的方法，并使用MIMO-OFDMA系统的所有可测量参数来执行特定于MIMO-OFDMA系统的各个部分的测量的方法披露另外，提供了使用根据IEEE 802.16标准的单个接收机接收和完成WiMAX MIMO信号的损伤估计的方法。

4. 发明申请

US20100226356A1 METHOD FOR ITERATIVE INTERFERENCE CANCELLATION FOR CO-CHANNEL MULTI-CARRIER AND NARROWBAND SYSTEMS 有权
标题翻译：用于共通道多载波和窄带系统的迭代干扰消除的方法
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。

5. 发明申请

US20110312317A1 INTER-CARRIER INTERFERENCE MANAGEMENT IN DEDICATED CHANNEL FEMTOCELL NETWORKS 有权
标题翻译：专用通道FEMTOCELL网络中的互操作干扰管理
公开(公告)号：US20110312317A1
公开(公告)日：2011-12-22
申请号：US13165059
申请日：2011-06-21
申请人： Alphan Sahin , Ismail Guvenc , Huseyin Arslan
发明人： Alphan Sahin , Ismail Guvenc , Huseyin Arslan
IPC分类号： H04W4/00
CPC分类号： H04W16/16 , H04W84/045
摘要： In one embodiment, a method of mitigating uplink inter-carrier interference (ICI) from macrocell mobile stations at a dedicated channel femtocell base station is provided that includes: determining a timing offset for a femtocell uplink symbol timing that reduces the ICI based upon an expected spatial distribution for the macrocell mobile stations with respect to the femtocell base station; communicating the timing offset to at least one femtocell mobile station; and at the femtocell base station, receiving an uplink symbol transmission from the at least one femtocell mobile station according to the timing offset.
摘要翻译：在一个实施例中，提供了一种在专用信道毫微微小区基站处减轻来自宏小区移动站的上行链路载波间干扰（ICI）的方法，其包括：基于预期的方式来确定用于减少ICI的毫微微小区上行链路符号定时的定时偏移相对于毫微微小区基站的宏小区移动站的空间分布; 将定时偏移传送到至少一个毫微微蜂窝移动站; 并且在所述毫微微小区基站处，根据所述定时偏移从所述至少一个毫微微小区移动站接收上行链路符号传输。

6. 发明授权

US08428519B2 Inter-carrier interference management in dedicated channel femtocell networks 有权
标题翻译：专用信道毫微微小区网络中的载波间干扰管理
公开(公告)号：US08428519B2
公开(公告)日：2013-04-23
申请号：US13165059
申请日：2011-06-21
申请人： Alphan Sahin , Ismail Guvenc , Huseyin Arslan
发明人： Alphan Sahin , Ismail Guvenc , Huseyin Arslan
IPC分类号： H04B1/00
CPC分类号： H04W16/16 , H04W84/045
摘要： In one embodiment, a method of mitigating uplink inter-carrier interference (ICI) from macrocell mobile stations at a dedicated channel femtocell base station is provided that includes: determining a timing offset for a femtocell uplink symbol timing that reduces the ICI based upon an expected spatial distribution for the macrocell mobile stations with respect to the femtocell base station; communicating the timing offset to at least one femtocell mobile station; and at the femtocell base station, receiving an uplink symbol transmission from the at least one femtocell mobile station according to the timing offset.
摘要翻译：在一个实施例中，提供了一种在专用信道毫微微小区基站处减轻来自宏小区移动站的上行链路载波间干扰（ICI）的方法，其包括：基于预期的方式来确定用于减少ICI的毫微微小区上行链路符号定时的定时偏移相对于毫微微小区基站的宏小区移动站的空间分布; 将定时偏移传送到至少一个毫微微蜂窝移动站; 并且在所述毫微微小区基站处，根据所述定时偏移从所述至少一个毫微微小区移动站接收上行链路符号传输。

7. 发明授权

US08155595B2 Method for iterative interference cancellation for co-channel multi-carrier and narrowband systems 有权
标题翻译：用于同信道多载波和窄带系统的迭代干扰消除方法
公开(公告)号：US08155595B2
公开(公告)日：2012-04-10
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： H04B1/00 , H04B1/04 , H04B1/06 , H04B1/10 , H04K1/10 , H04K1/02
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。

8. 发明授权

US10476705B2 Combined minimization of intersymbol interference (ISI) and adjacent channel interference (ACI) 有权
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.

9. 发明申请

US20190280905A1 COMBINED MINIMIZATION OF INTERSYMBOL INTERFERENCE (ISI) AND ADJACENT CHANNEL INTERFERENCE (ACI) 审中-公开
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.

10. 发明授权

US10411819B1 System and method for adaptive OFDM guards 有权
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.

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