The Experts below are selected from a list of 303 Experts worldwide ranked by ideXlab platform
Sofie Pollin - One of the best experts on this subject based on the ideXlab platform.
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On the General Mathematical Framework, Calibration/Compensation Method, and Applications of Non-Ideal Software Defined Harmonics
2015Co-Authors: Marian Verhelst, Andre Bourdoux, Liesbet Van Der Perre, Sofie PollinAbstract:Recently harmonic interference rejection has been recognized as a crucial bottleneck of truly wide-band software defined radio transceivers. Phase and gain mismatches among mixing paths, typical for nanoscale technology nodes, severely im- pact the achievable rejection ratio in classical harmonic rejection transceivers. This paper proposes an alternative digital intensive architecture, which enables increased harmonic interference rejection for wide-band SDR transceivers impacted by severe gain and phase mismatches. A generic Mathematical Framework of the target architecture is introduced to support a systematic design space exploration for multi-path harmonic interference rejection transceivers. With the Framework, an iterative on-die estimation and compensation of mismatch for both the transmitter and receiver are presented. Case study with four mixing paths shows that ideal rejection can be achieved when targeting a single dominating harmonic interferer, and joint suppression of the 3rd and 5th order harmonic interferers of at least 70 dB can be obtained under realistic radio input scenarios.
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on the General Mathematical Framework calibration compensation method and applications of non ideal software defined harmonics
2015Co-Authors: Marian Verhelst, Andre Bourdoux, Liesbet Van Der Perre, Sofie PollinAbstract:Recently harmonic interference rejection has been recognized as a crucial bottleneck of truly wide-band software defined radio transceivers. Phase and gain mismatches among mixing paths, typical for nanoscale technology nodes, severely im- pact the achievable rejection ratio in classical harmonic rejection transceivers. This paper proposes an alternative digital intensive architecture, which enables increased harmonic interference rejection for wide-band SDR transceivers impacted by severe gain and phase mismatches. A generic Mathematical Framework of the target architecture is introduced to support a systematic design space exploration for multi-path harmonic interference rejection transceivers. With the Framework, an iterative on-die estimation and compensation of mismatch for both the transmitter and receiver are presented. Case study with four mixing paths shows that ideal rejection can be achieved when targeting a single dominating harmonic interferer, and joint suppression of the 3rd and 5th order harmonic interferers of at least 70 dB can be obtained under realistic radio input scenarios.
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on the General Mathematical Framework calibration compensation method and applications of non ideal software defined harmonics rejection transceivers
IEEE Transactions on Circuits and Systems, 2015Co-Authors: Chunshu Li, Marian Verhelst, Andre Bourdoux, Min Li, Liesbet Van Der Perre, Sofie PollinAbstract:Recently harmonic interference rejection has been recognized as a crucial bottleneck of truly wide-band software defined radio transceivers. Phase and gain mismatches among mixing paths, typical for nanoscale technology nodes, severely impact the achievable rejection ratio in classical harmonic rejection transceivers. This paper proposes an alternative digital intensive architecture, which enables increased harmonic interference rejection for wide-band SDR transceivers impacted by severe gain and phase mismatches. A generic Mathematical Framework of the target architecture is introduced to support a systematic design space exploration for multi-path harmonic interference rejection transceivers. With the Framework, an iterative on-die estimation and compensation of mismatch for both the transmitter and receiver are presented. Case study with four mixing paths shows that ideal rejection can be achieved when targeting a single dominating harmonic interferer, and joint suppression of the 3rd and 5th order harmonic interferers of at least 70 dB can be obtained under realistic radio input scenarios.
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On the General Mathematical Framework, Calibration/Compensation Method, and Applications of Non-Ideal Software Defined Harmonics Rejection Transceivers
IEEE Transactions on Circuits and Systems I: Regular Papers, 2015Co-Authors: Marian Verhelst, Andre Bourdoux, Liesbet Van Der Perre, Sofie PollinAbstract:Recently harmonic interference rejection has been recognized as a crucial bottleneck of truly wide-band software defined radio transceivers. Phase and gain mismatches among mixing paths, typical for nanoscale technology nodes, severely impact the achievable rejection ratio in classical harmonic rejection transceivers. This paper proposes an alternative digital intensive architecture, which enables increased harmonic interference rejection for wide-band SDR transceivers impacted by severe gain and phase mismatches. A generic Mathematical Framework of the target architecture is introduced to support a systematic design space exploration for multi-path harmonic interference rejection transceivers. With the Framework, an iterative on-die estimation and compensation of mismatch for both the transmitter and receiver are presented. Case study with four mixing paths shows that ideal rejection can be achieved when targeting a single dominating harmonic interferer, and joint suppression of the 3rd and 5th order harmonic interferers of at least 70 dB can be obtained under realistic radio input scenarios.
Jinzhi Lei - One of the best experts on this subject based on the ideXlab platform.
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A General Mathematical Framework for understanding the behavior of heterogeneous stem cell regeneration
Journal of theoretical biology, 2020Co-Authors: Jinzhi LeiAbstract:Stem cell heterogeneity is essential for homeostasis in tissue development. This paper establishes a General Mathematical Framework to model the dynamics of stem cell regeneration with cell heterogeneity and random transitions of epigenetic states. The Framework Generalizes the classical G0 cell cycle model and incorporates the epigenetic states of individual cells represented by a continuous multidimensional variable. In the model, the kinetic rates of cell behaviors, including proliferation, differentiation, and apoptosis, are dependent on their epigenetic states, and the random transitions of epigenetic states between cell cycles are represented by an inheritance probability function that describes the conditional probability of cell state changes. Moreover, the model can be extended to include genotypic changes and describe the process of gene mutation-induced tumor development. The proposed Mathematical Framework provides a Generalized formula that helps us to understand various dynamic processes of stem cell regeneration, including tissue development, degeneration, and abnormal growth.
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A General Mathematical Framework for understanding the behavior of heterogeneous stem cell regeneration
2019Co-Authors: Jinzhi LeiAbstract:Abstract Stem cell heterogeneity is essential for the homeostasis in tissue development. This paper established a General formulation for understanding the dynamics of stem cell regeneration with cell heterogeneity and random transitions of epigenetic states. The model Generalizes the classical G0 cell cycle model, and incorporates the epigenetic states of stem cells that are represented by a continuous multidimensional variable and the kinetic rates of cell behaviors, including proliferation, differentiation, and apoptosis, that are dependent on their epigenetic states. Moreover, the random transition of epigenetic states is represented by an inheritance probability that can be described as a conditional beta distribution. This model can be extended to investigate gene mutation-induced tumor development. The proposed formula is a Generalized formula that helps us to understand various dynamic processes of stem cell regeneration, including tissue development, degeneration, and abnormal growth.
Marian Verhelst - One of the best experts on this subject based on the ideXlab platform.
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On the General Mathematical Framework, Calibration/Compensation Method, and Applications of Non-Ideal Software Defined Harmonics
2015Co-Authors: Marian Verhelst, Andre Bourdoux, Liesbet Van Der Perre, Sofie PollinAbstract:Recently harmonic interference rejection has been recognized as a crucial bottleneck of truly wide-band software defined radio transceivers. Phase and gain mismatches among mixing paths, typical for nanoscale technology nodes, severely im- pact the achievable rejection ratio in classical harmonic rejection transceivers. This paper proposes an alternative digital intensive architecture, which enables increased harmonic interference rejection for wide-band SDR transceivers impacted by severe gain and phase mismatches. A generic Mathematical Framework of the target architecture is introduced to support a systematic design space exploration for multi-path harmonic interference rejection transceivers. With the Framework, an iterative on-die estimation and compensation of mismatch for both the transmitter and receiver are presented. Case study with four mixing paths shows that ideal rejection can be achieved when targeting a single dominating harmonic interferer, and joint suppression of the 3rd and 5th order harmonic interferers of at least 70 dB can be obtained under realistic radio input scenarios.
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on the General Mathematical Framework calibration compensation method and applications of non ideal software defined harmonics
2015Co-Authors: Marian Verhelst, Andre Bourdoux, Liesbet Van Der Perre, Sofie PollinAbstract:Recently harmonic interference rejection has been recognized as a crucial bottleneck of truly wide-band software defined radio transceivers. Phase and gain mismatches among mixing paths, typical for nanoscale technology nodes, severely im- pact the achievable rejection ratio in classical harmonic rejection transceivers. This paper proposes an alternative digital intensive architecture, which enables increased harmonic interference rejection for wide-band SDR transceivers impacted by severe gain and phase mismatches. A generic Mathematical Framework of the target architecture is introduced to support a systematic design space exploration for multi-path harmonic interference rejection transceivers. With the Framework, an iterative on-die estimation and compensation of mismatch for both the transmitter and receiver are presented. Case study with four mixing paths shows that ideal rejection can be achieved when targeting a single dominating harmonic interferer, and joint suppression of the 3rd and 5th order harmonic interferers of at least 70 dB can be obtained under realistic radio input scenarios.
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on the General Mathematical Framework calibration compensation method and applications of non ideal software defined harmonics rejection transceivers
IEEE Transactions on Circuits and Systems, 2015Co-Authors: Chunshu Li, Marian Verhelst, Andre Bourdoux, Min Li, Liesbet Van Der Perre, Sofie PollinAbstract:Recently harmonic interference rejection has been recognized as a crucial bottleneck of truly wide-band software defined radio transceivers. Phase and gain mismatches among mixing paths, typical for nanoscale technology nodes, severely impact the achievable rejection ratio in classical harmonic rejection transceivers. This paper proposes an alternative digital intensive architecture, which enables increased harmonic interference rejection for wide-band SDR transceivers impacted by severe gain and phase mismatches. A generic Mathematical Framework of the target architecture is introduced to support a systematic design space exploration for multi-path harmonic interference rejection transceivers. With the Framework, an iterative on-die estimation and compensation of mismatch for both the transmitter and receiver are presented. Case study with four mixing paths shows that ideal rejection can be achieved when targeting a single dominating harmonic interferer, and joint suppression of the 3rd and 5th order harmonic interferers of at least 70 dB can be obtained under realistic radio input scenarios.
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On the General Mathematical Framework, Calibration/Compensation Method, and Applications of Non-Ideal Software Defined Harmonics Rejection Transceivers
IEEE Transactions on Circuits and Systems I: Regular Papers, 2015Co-Authors: Marian Verhelst, Andre Bourdoux, Liesbet Van Der Perre, Sofie PollinAbstract:Recently harmonic interference rejection has been recognized as a crucial bottleneck of truly wide-band software defined radio transceivers. Phase and gain mismatches among mixing paths, typical for nanoscale technology nodes, severely impact the achievable rejection ratio in classical harmonic rejection transceivers. This paper proposes an alternative digital intensive architecture, which enables increased harmonic interference rejection for wide-band SDR transceivers impacted by severe gain and phase mismatches. A generic Mathematical Framework of the target architecture is introduced to support a systematic design space exploration for multi-path harmonic interference rejection transceivers. With the Framework, an iterative on-die estimation and compensation of mismatch for both the transmitter and receiver are presented. Case study with four mixing paths shows that ideal rejection can be achieved when targeting a single dominating harmonic interferer, and joint suppression of the 3rd and 5th order harmonic interferers of at least 70 dB can be obtained under realistic radio input scenarios.
Andre Bourdoux - One of the best experts on this subject based on the ideXlab platform.
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On the General Mathematical Framework, Calibration/Compensation Method, and Applications of Non-Ideal Software Defined Harmonics
2015Co-Authors: Marian Verhelst, Andre Bourdoux, Liesbet Van Der Perre, Sofie PollinAbstract:Recently harmonic interference rejection has been recognized as a crucial bottleneck of truly wide-band software defined radio transceivers. Phase and gain mismatches among mixing paths, typical for nanoscale technology nodes, severely im- pact the achievable rejection ratio in classical harmonic rejection transceivers. This paper proposes an alternative digital intensive architecture, which enables increased harmonic interference rejection for wide-band SDR transceivers impacted by severe gain and phase mismatches. A generic Mathematical Framework of the target architecture is introduced to support a systematic design space exploration for multi-path harmonic interference rejection transceivers. With the Framework, an iterative on-die estimation and compensation of mismatch for both the transmitter and receiver are presented. Case study with four mixing paths shows that ideal rejection can be achieved when targeting a single dominating harmonic interferer, and joint suppression of the 3rd and 5th order harmonic interferers of at least 70 dB can be obtained under realistic radio input scenarios.
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on the General Mathematical Framework calibration compensation method and applications of non ideal software defined harmonics
2015Co-Authors: Marian Verhelst, Andre Bourdoux, Liesbet Van Der Perre, Sofie PollinAbstract:Recently harmonic interference rejection has been recognized as a crucial bottleneck of truly wide-band software defined radio transceivers. Phase and gain mismatches among mixing paths, typical for nanoscale technology nodes, severely im- pact the achievable rejection ratio in classical harmonic rejection transceivers. This paper proposes an alternative digital intensive architecture, which enables increased harmonic interference rejection for wide-band SDR transceivers impacted by severe gain and phase mismatches. A generic Mathematical Framework of the target architecture is introduced to support a systematic design space exploration for multi-path harmonic interference rejection transceivers. With the Framework, an iterative on-die estimation and compensation of mismatch for both the transmitter and receiver are presented. Case study with four mixing paths shows that ideal rejection can be achieved when targeting a single dominating harmonic interferer, and joint suppression of the 3rd and 5th order harmonic interferers of at least 70 dB can be obtained under realistic radio input scenarios.
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on the General Mathematical Framework calibration compensation method and applications of non ideal software defined harmonics rejection transceivers
IEEE Transactions on Circuits and Systems, 2015Co-Authors: Chunshu Li, Marian Verhelst, Andre Bourdoux, Min Li, Liesbet Van Der Perre, Sofie PollinAbstract:Recently harmonic interference rejection has been recognized as a crucial bottleneck of truly wide-band software defined radio transceivers. Phase and gain mismatches among mixing paths, typical for nanoscale technology nodes, severely impact the achievable rejection ratio in classical harmonic rejection transceivers. This paper proposes an alternative digital intensive architecture, which enables increased harmonic interference rejection for wide-band SDR transceivers impacted by severe gain and phase mismatches. A generic Mathematical Framework of the target architecture is introduced to support a systematic design space exploration for multi-path harmonic interference rejection transceivers. With the Framework, an iterative on-die estimation and compensation of mismatch for both the transmitter and receiver are presented. Case study with four mixing paths shows that ideal rejection can be achieved when targeting a single dominating harmonic interferer, and joint suppression of the 3rd and 5th order harmonic interferers of at least 70 dB can be obtained under realistic radio input scenarios.
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On the General Mathematical Framework, Calibration/Compensation Method, and Applications of Non-Ideal Software Defined Harmonics Rejection Transceivers
IEEE Transactions on Circuits and Systems I: Regular Papers, 2015Co-Authors: Marian Verhelst, Andre Bourdoux, Liesbet Van Der Perre, Sofie PollinAbstract:Recently harmonic interference rejection has been recognized as a crucial bottleneck of truly wide-band software defined radio transceivers. Phase and gain mismatches among mixing paths, typical for nanoscale technology nodes, severely impact the achievable rejection ratio in classical harmonic rejection transceivers. This paper proposes an alternative digital intensive architecture, which enables increased harmonic interference rejection for wide-band SDR transceivers impacted by severe gain and phase mismatches. A generic Mathematical Framework of the target architecture is introduced to support a systematic design space exploration for multi-path harmonic interference rejection transceivers. With the Framework, an iterative on-die estimation and compensation of mismatch for both the transmitter and receiver are presented. Case study with four mixing paths shows that ideal rejection can be achieved when targeting a single dominating harmonic interferer, and joint suppression of the 3rd and 5th order harmonic interferers of at least 70 dB can be obtained under realistic radio input scenarios.
Chunshu Li - One of the best experts on this subject based on the ideXlab platform.
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on the General Mathematical Framework calibration compensation method and applications of non ideal software defined harmonics rejection transceivers
IEEE Transactions on Circuits and Systems, 2015Co-Authors: Chunshu Li, Marian Verhelst, Andre Bourdoux, Min Li, Liesbet Van Der Perre, Sofie PollinAbstract:Recently harmonic interference rejection has been recognized as a crucial bottleneck of truly wide-band software defined radio transceivers. Phase and gain mismatches among mixing paths, typical for nanoscale technology nodes, severely impact the achievable rejection ratio in classical harmonic rejection transceivers. This paper proposes an alternative digital intensive architecture, which enables increased harmonic interference rejection for wide-band SDR transceivers impacted by severe gain and phase mismatches. A generic Mathematical Framework of the target architecture is introduced to support a systematic design space exploration for multi-path harmonic interference rejection transceivers. With the Framework, an iterative on-die estimation and compensation of mismatch for both the transmitter and receiver are presented. Case study with four mixing paths shows that ideal rejection can be achieved when targeting a single dominating harmonic interferer, and joint suppression of the 3rd and 5th order harmonic interferers of at least 70 dB can be obtained under realistic radio input scenarios.