2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2013
ABSTRACT Impulse radio ultra-wideband (IR-UWB) is being employed in several IEEE standards for Wi... more ABSTRACT Impulse radio ultra-wideband (IR-UWB) is being employed in several IEEE standards for Wireless Sensor Network (WSN). This paper presents a battery model for small form factor, zinc-air button cell batteries with high energy density but also high internal impedance. Their usage in small form factor IR-UWB radios, requires accurate modeling to enable proper power management system design, avoiding system failure due to excessive supply voltage variation. In preamble synchronization phase all receiver blocks are used continuously, causing a current peak. The required battery model consists of seven resistor-capacitor (RC) sections.
2012 IEEE International Solid-State Circuits Conference, 2012
Any around-the-body wireless system faces challenging requirements. This is especially true in th... more Any around-the-body wireless system faces challenging requirements. This is especially true in the case of audio streaming around the head e.g. for wireless audio headsets or hearing-aid devices. The behind-the-ear device typically serves multiple radio links e.g. ear-to-ear, ear-to-pocket (a phone or MP3 player) or even a link between the ear and a remote base station such as a TV.
2010 IEEE International Conference on Ultra-Wideband, 2010
This paper presents a novel mathematical model to relate pulse amplitude of impulse radio UWB sig... more This paper presents a novel mathematical model to relate pulse amplitude of impulse radio UWB signals to peak power as limited by regulatory bodies. In contrast to existing methods, this model explicitly takes bursts of pulses into account, as is the case for the signaling scheme in the IEEE 802.15.4a standard. Based on insights obtained using this novel model, it
2010 IEEE International Conference on Ultra-Wideband, 2010
Abstract This paper presents a low power ultra-wide band digital receiver baseband architecture f... more Abstract This paper presents a low power ultra-wide band digital receiver baseband architecture for handling IEEE 802.15. 4a packets in real-time. Real-time processing allows duty cycling of the analog frontend, which is key to achieve low power consumption. The ...
IEEE Transactions on Microwave Theory and Techniques, 2000
This paper provides a method for estimating peak power for impulse-radio ultra-wideband signals. ... more This paper provides a method for estimating peak power for impulse-radio ultra-wideband signals. By analyzing the required measurement procedure, a set of equations is derived, which are verified with simulated and measured results. The IEEE 802.15.4a standard is used as an example. The idiosyncracy of IEEE 802.15.4a is the usage of bursts of pulses. Hence, we in this paper propose
2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2013
ABSTRACT Impulse radio ultra-wideband (IR-UWB) is being employed in several IEEE standards for Wi... more ABSTRACT Impulse radio ultra-wideband (IR-UWB) is being employed in several IEEE standards for Wireless Sensor Network (WSN). This paper presents a battery model for small form factor, zinc-air button cell batteries with high energy density but also high internal impedance. Their usage in small form factor IR-UWB radios, requires accurate modeling to enable proper power management system design, avoiding system failure due to excessive supply voltage variation. In preamble synchronization phase all receiver blocks are used continuously, causing a current peak. The required battery model consists of seven resistor-capacitor (RC) sections.
2012 IEEE International Solid-State Circuits Conference, 2012
Any around-the-body wireless system faces challenging requirements. This is especially true in th... more Any around-the-body wireless system faces challenging requirements. This is especially true in the case of audio streaming around the head e.g. for wireless audio headsets or hearing-aid devices. The behind-the-ear device typically serves multiple radio links e.g. ear-to-ear, ear-to-pocket (a phone or MP3 player) or even a link between the ear and a remote base station such as a TV.
2010 IEEE International Conference on Ultra-Wideband, 2010
This paper presents a novel mathematical model to relate pulse amplitude of impulse radio UWB sig... more This paper presents a novel mathematical model to relate pulse amplitude of impulse radio UWB signals to peak power as limited by regulatory bodies. In contrast to existing methods, this model explicitly takes bursts of pulses into account, as is the case for the signaling scheme in the IEEE 802.15.4a standard. Based on insights obtained using this novel model, it
ABSTRACT PLLs have become an important part of electrical systems. When designing a PLL, an effic... more ABSTRACT PLLs have become an important part of electrical systems. When designing a PLL, an efficient and reliable simulation platform for system evaluation is needed. However, the closed loop simulation of a PLL is time consuming. To address this problem, in this paper, a new PLL model containing both digital and analog parts based on the recently published SystemC/SystemC-AMS (BETA version) language is presented. Many imperfections such as Voltage Control Oscillator (VCO) noise or reference jitter are included in this model. By comparing with the Matlab model, the SystemC/SystemC-AMS model can dramatically reduce simulation time. Also, by comparing with Analog Device's ADI SimPLL simulation results, Cadence simulation results and real measurement results, the accuracy of the SystemC/SystemC-AMS model is demonstrated. The paper shows the feasibility of a unified design environment for mixed-signal modeling based on SystemC/SystemC-AMS in order to reduce the cost and design time of electrical systems.
2010 IEEE International Conference on Ultra-Wideband, 2010
Abstract This paper presents a low power ultra-wide band digital receiver baseband architecture f... more Abstract This paper presents a low power ultra-wide band digital receiver baseband architecture for handling IEEE 802.15. 4a packets in real-time. Real-time processing allows duty cycling of the analog frontend, which is key to achieve low power consumption. The ...
2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2013
ABSTRACT Impulse radio ultra-wideband (IR-UWB) is being employed in several IEEE standards for Wi... more ABSTRACT Impulse radio ultra-wideband (IR-UWB) is being employed in several IEEE standards for Wireless Sensor Network (WSN). This paper presents a battery model for small form factor, zinc-air button cell batteries with high energy density but also high internal impedance. Their usage in small form factor IR-UWB radios, requires accurate modeling to enable proper power management system design, avoiding system failure due to excessive supply voltage variation. In preamble synchronization phase all receiver blocks are used continuously, causing a current peak. The required battery model consists of seven resistor-capacitor (RC) sections.
2012 IEEE International Solid-State Circuits Conference, 2012
Any around-the-body wireless system faces challenging requirements. This is especially true in th... more Any around-the-body wireless system faces challenging requirements. This is especially true in the case of audio streaming around the head e.g. for wireless audio headsets or hearing-aid devices. The behind-the-ear device typically serves multiple radio links e.g. ear-to-ear, ear-to-pocket (a phone or MP3 player) or even a link between the ear and a remote base station such as a TV.
2010 IEEE International Conference on Ultra-Wideband, 2010
This paper presents a novel mathematical model to relate pulse amplitude of impulse radio UWB sig... more This paper presents a novel mathematical model to relate pulse amplitude of impulse radio UWB signals to peak power as limited by regulatory bodies. In contrast to existing methods, this model explicitly takes bursts of pulses into account, as is the case for the signaling scheme in the IEEE 802.15.4a standard. Based on insights obtained using this novel model, it
2010 IEEE International Conference on Ultra-Wideband, 2010
Abstract This paper presents a low power ultra-wide band digital receiver baseband architecture f... more Abstract This paper presents a low power ultra-wide band digital receiver baseband architecture for handling IEEE 802.15. 4a packets in real-time. Real-time processing allows duty cycling of the analog frontend, which is key to achieve low power consumption. The ...
IEEE Transactions on Microwave Theory and Techniques, 2000
This paper provides a method for estimating peak power for impulse-radio ultra-wideband signals. ... more This paper provides a method for estimating peak power for impulse-radio ultra-wideband signals. By analyzing the required measurement procedure, a set of equations is derived, which are verified with simulated and measured results. The IEEE 802.15.4a standard is used as an example. The idiosyncracy of IEEE 802.15.4a is the usage of bursts of pulses. Hence, we in this paper propose
2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2013
ABSTRACT Impulse radio ultra-wideband (IR-UWB) is being employed in several IEEE standards for Wi... more ABSTRACT Impulse radio ultra-wideband (IR-UWB) is being employed in several IEEE standards for Wireless Sensor Network (WSN). This paper presents a battery model for small form factor, zinc-air button cell batteries with high energy density but also high internal impedance. Their usage in small form factor IR-UWB radios, requires accurate modeling to enable proper power management system design, avoiding system failure due to excessive supply voltage variation. In preamble synchronization phase all receiver blocks are used continuously, causing a current peak. The required battery model consists of seven resistor-capacitor (RC) sections.
2012 IEEE International Solid-State Circuits Conference, 2012
Any around-the-body wireless system faces challenging requirements. This is especially true in th... more Any around-the-body wireless system faces challenging requirements. This is especially true in the case of audio streaming around the head e.g. for wireless audio headsets or hearing-aid devices. The behind-the-ear device typically serves multiple radio links e.g. ear-to-ear, ear-to-pocket (a phone or MP3 player) or even a link between the ear and a remote base station such as a TV.
2010 IEEE International Conference on Ultra-Wideband, 2010
This paper presents a novel mathematical model to relate pulse amplitude of impulse radio UWB sig... more This paper presents a novel mathematical model to relate pulse amplitude of impulse radio UWB signals to peak power as limited by regulatory bodies. In contrast to existing methods, this model explicitly takes bursts of pulses into account, as is the case for the signaling scheme in the IEEE 802.15.4a standard. Based on insights obtained using this novel model, it
ABSTRACT PLLs have become an important part of electrical systems. When designing a PLL, an effic... more ABSTRACT PLLs have become an important part of electrical systems. When designing a PLL, an efficient and reliable simulation platform for system evaluation is needed. However, the closed loop simulation of a PLL is time consuming. To address this problem, in this paper, a new PLL model containing both digital and analog parts based on the recently published SystemC/SystemC-AMS (BETA version) language is presented. Many imperfections such as Voltage Control Oscillator (VCO) noise or reference jitter are included in this model. By comparing with the Matlab model, the SystemC/SystemC-AMS model can dramatically reduce simulation time. Also, by comparing with Analog Device's ADI SimPLL simulation results, Cadence simulation results and real measurement results, the accuracy of the SystemC/SystemC-AMS model is demonstrated. The paper shows the feasibility of a unified design environment for mixed-signal modeling based on SystemC/SystemC-AMS in order to reduce the cost and design time of electrical systems.
2010 IEEE International Conference on Ultra-Wideband, 2010
Abstract This paper presents a low power ultra-wide band digital receiver baseband architecture f... more Abstract This paper presents a low power ultra-wide band digital receiver baseband architecture for handling IEEE 802.15. 4a packets in real-time. Real-time processing allows duty cycling of the analog frontend, which is key to achieve low power consumption. The ...
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