2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers, 2013
ABSTRACT Wireless Sensor Nodes (WSN) have a wide range of applications in health care and life st... more ABSTRACT Wireless Sensor Nodes (WSN) have a wide range of applications in health care and life style monitoring. Their severe energy constraint is often addressed through minimizing the amount of transmitted data by way of energy-efficient on-node signal processing. The rationale for this approach is that a large portion of WSN energy is consumed by the radio communication even for very low-data-rate situations [1]. Efficient on-node processing has been the subject of recent work, with the common element being aggressive voltage scaling into the sub-threshold region [2-4]. A major assumption of the existing works is that the amount of required computation is low, justifying an on-node processor with limited computational capability. While this might be the case for many applications of WSNs, emerging ambulatory biomedical signal processing applications exceed the performance offered by today's on-node processors.
2010 17th IEEE International Conference on Electronics, Circuits and Systems, 2010
ABSTRACT Leakage power (active and standby) is becoming increasingly dominant part of total power... more ABSTRACT Leakage power (active and standby) is becoming increasingly dominant part of total power consumption in nano-scaled CMOS circuits. Present day commercial libraries provide multiple vt class cells to optimize active leakage power and circuit timing in functional/active mode, while techniques such as power gating have specifically addressed standby leakage reduction. However, the total leakage power which constitutes active and standby leakage components clearly depends on relative time spent in active and standby modes respectively which we refer to as activity profile of the design. Optimizing active and standby leakage independently without considering activity profile information can lead to sub-optimal leakage power savings. In this work, we propose activity profile driven optimization using multi-vt and power gating techniques where a trade-off between active and standby leakage components is performed to minimize the total leakage power. Results on benchmark circuits show that our technique achieves up to 3X improvement in leakage power savings on an average for long standby times while 2X-1.5X improvement for medium to low standby times as compared to conventional design techniques while preserving the original timing of the design.
Networks are a becoming a necessity to easily integrate multiple processors on a single chip. A c... more Networks are a becoming a necessity to easily integrate multiple processors on a single chip. A crucial question here is whether it is good enough to reason about statistical performance as opposed to hard real-time performance constraints. Today’s processors often do not allow software design for hard real-time systems, caused by the design of the bus- and/or memory interfaces, thereby
Proceedings of the IEEE 1995 Custom Integrated Circuits Conference, 1995
In this paper the design of two chips for an ASIC based channel decoder for a Digital Audio Broad... more In this paper the design of two chips for an ASIC based channel decoder for a Digital Audio Broadcasting (DAB) system is discussed. The ASIC solution is a follow-up to an expensive implementation which is based on general purpose DSP processors. Both ASICs are used in a test receiver and a precursor consumer DAB receiver
Proceedings of IEEE Workshop on VLSI Signal Processing, 1993
Digital Audio Broadcasting (DAB) is a logical consequence of the digital sound carriers such as C... more Digital Audio Broadcasting (DAB) is a logical consequence of the digital sound carriers such as Compact Disc and Digital Compact Cassette. In a later stage it may replace the traditional radio systems such as FM, leading to CD quality audio reception under almost all circumstances. The authors describe the design issues of a channel decoder for a DAB receiver and
This paper describes the design of a channel demodulator IC for a Digital Audio Broadcasting (DAB... more This paper describes the design of a channel demodulator IC for a Digital Audio Broadcasting (DAB) system. The IC contains 466K-transistors and includes a 160 K embedded Dynamic RAM. The design was done using the PIRAMID silicon compiler. Using the compiler it was possible to create on short term an application specific complex-arithmetic signal processor. The IC, which allows for the first time real-time OFDM demodulation, is being used in current prototypes of a DAB receiver
2006 IFIP International Conference on Very Large Scale Integration, 2006
... Chris Bartels*, Jos Huiskent, Kees Goossens+, Patrick Groeneveld*, Jef van Meerbergen*t *Eind... more ... Chris Bartels*, Jos Huiskent, Kees Goossens+, Patrick Groeneveld*, Jef van Meerbergen*t *Eindhoven University of Technology, tSilicon Hive, +Philips Research cllbartels@tue.nl, {jos.huisken, kees.goossens, jef.van.meerbergen}@philips.com, patrick@ics.ele.tue.nl ...
IFIP International Federation for Information Processing, 2008
The growing complexity of multiprocessor systems on chip make the integration of Intellectual Pro... more The growing complexity of multiprocessor systems on chip make the integration of Intellectual Property (IP) blocks into a working system a major challenge. Networks-on-Chip (NoCs) facilitate a modular design approach which addresses the hardware challenges in designing such a system. Guaranteed communication services, offered by the �thereal NoC, address the software challenges by making the system more robust and easier
1999 IEEE Third Workshop on Multimedia Signal Processing (Cat. No.99TH8451), 1999
Connectivity with different infrastructures implies the use of many media, far more than the amou... more Connectivity with different infrastructures implies the use of many media, far more than the amount required to communicate with man. When we restrict ourselves to hand-held devices, this number reduces due to the need for wireless communication. The majority of hand-held devices only have a single channel to provide connectivity with the network. The number of hand-held terminals has grown
2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers, 2013
ABSTRACT Wireless Sensor Nodes (WSN) have a wide range of applications in health care and life st... more ABSTRACT Wireless Sensor Nodes (WSN) have a wide range of applications in health care and life style monitoring. Their severe energy constraint is often addressed through minimizing the amount of transmitted data by way of energy-efficient on-node signal processing. The rationale for this approach is that a large portion of WSN energy is consumed by the radio communication even for very low-data-rate situations [1]. Efficient on-node processing has been the subject of recent work, with the common element being aggressive voltage scaling into the sub-threshold region [2-4]. A major assumption of the existing works is that the amount of required computation is low, justifying an on-node processor with limited computational capability. While this might be the case for many applications of WSNs, emerging ambulatory biomedical signal processing applications exceed the performance offered by today's on-node processors.
2010 17th IEEE International Conference on Electronics, Circuits and Systems, 2010
ABSTRACT Leakage power (active and standby) is becoming increasingly dominant part of total power... more ABSTRACT Leakage power (active and standby) is becoming increasingly dominant part of total power consumption in nano-scaled CMOS circuits. Present day commercial libraries provide multiple vt class cells to optimize active leakage power and circuit timing in functional/active mode, while techniques such as power gating have specifically addressed standby leakage reduction. However, the total leakage power which constitutes active and standby leakage components clearly depends on relative time spent in active and standby modes respectively which we refer to as activity profile of the design. Optimizing active and standby leakage independently without considering activity profile information can lead to sub-optimal leakage power savings. In this work, we propose activity profile driven optimization using multi-vt and power gating techniques where a trade-off between active and standby leakage components is performed to minimize the total leakage power. Results on benchmark circuits show that our technique achieves up to 3X improvement in leakage power savings on an average for long standby times while 2X-1.5X improvement for medium to low standby times as compared to conventional design techniques while preserving the original timing of the design.
Networks are a becoming a necessity to easily integrate multiple processors on a single chip. A c... more Networks are a becoming a necessity to easily integrate multiple processors on a single chip. A crucial question here is whether it is good enough to reason about statistical performance as opposed to hard real-time performance constraints. Today’s processors often do not allow software design for hard real-time systems, caused by the design of the bus- and/or memory interfaces, thereby
Proceedings of the IEEE 1995 Custom Integrated Circuits Conference, 1995
In this paper the design of two chips for an ASIC based channel decoder for a Digital Audio Broad... more In this paper the design of two chips for an ASIC based channel decoder for a Digital Audio Broadcasting (DAB) system is discussed. The ASIC solution is a follow-up to an expensive implementation which is based on general purpose DSP processors. Both ASICs are used in a test receiver and a precursor consumer DAB receiver
Proceedings of IEEE Workshop on VLSI Signal Processing, 1993
Digital Audio Broadcasting (DAB) is a logical consequence of the digital sound carriers such as C... more Digital Audio Broadcasting (DAB) is a logical consequence of the digital sound carriers such as Compact Disc and Digital Compact Cassette. In a later stage it may replace the traditional radio systems such as FM, leading to CD quality audio reception under almost all circumstances. The authors describe the design issues of a channel decoder for a DAB receiver and
This paper describes the design of a channel demodulator IC for a Digital Audio Broadcasting (DAB... more This paper describes the design of a channel demodulator IC for a Digital Audio Broadcasting (DAB) system. The IC contains 466K-transistors and includes a 160 K embedded Dynamic RAM. The design was done using the PIRAMID silicon compiler. Using the compiler it was possible to create on short term an application specific complex-arithmetic signal processor. The IC, which allows for the first time real-time OFDM demodulation, is being used in current prototypes of a DAB receiver
2006 IFIP International Conference on Very Large Scale Integration, 2006
... Chris Bartels*, Jos Huiskent, Kees Goossens+, Patrick Groeneveld*, Jef van Meerbergen*t *Eind... more ... Chris Bartels*, Jos Huiskent, Kees Goossens+, Patrick Groeneveld*, Jef van Meerbergen*t *Eindhoven University of Technology, tSilicon Hive, +Philips Research cllbartels@tue.nl, {jos.huisken, kees.goossens, jef.van.meerbergen}@philips.com, patrick@ics.ele.tue.nl ...
IFIP International Federation for Information Processing, 2008
The growing complexity of multiprocessor systems on chip make the integration of Intellectual Pro... more The growing complexity of multiprocessor systems on chip make the integration of Intellectual Property (IP) blocks into a working system a major challenge. Networks-on-Chip (NoCs) facilitate a modular design approach which addresses the hardware challenges in designing such a system. Guaranteed communication services, offered by the �thereal NoC, address the software challenges by making the system more robust and easier
1999 IEEE Third Workshop on Multimedia Signal Processing (Cat. No.99TH8451), 1999
Connectivity with different infrastructures implies the use of many media, far more than the amou... more Connectivity with different infrastructures implies the use of many media, far more than the amount required to communicate with man. When we restrict ourselves to hand-held devices, this number reduces due to the need for wireless communication. The majority of hand-held devices only have a single channel to provide connectivity with the network. The number of hand-held terminals has grown
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