| 1. |
- Amin, Yasar, et al.
(författare)
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Green wideband RFID tag antenna for supply chain applications
- 2012
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Ingår i: IEICE Electronics Express. - : Institute of Electronics, Information and Communications Engineers (IEICE). - 1349-2543. ; 9:24, s. 1861-1866
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Tidskriftsartikel (refereegranskat)abstract
- In this paper, we demonstrate an RFID tag antenna manufactured by advanced inkjet printing technology on paper substrate using novel hole-matching technique for reducing the consumption of substrate material and conductive ink while attaining green RFID tags. In-depth electromagnetic analysis is performed methodologically for optimizing the parameters that effectuate the antenna dimensions. The antenna design is optimized for consistent wideband performance and extended read range throughout the complete UHF RFID band (860-960MHz), while exhibiting benchmarking results when n across cardboard cartons filled with metal or water containing objects.
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| 2. |
- Amin, Yasar, et al.
(författare)
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RFID antenna humidity sensor co-design for USN applications
- 2013
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Ingår i: IEICE Electronics Express. - : Institute of Electronics, Information and Communications Engineers (IEICE). - 1349-2543. ; 10:4, s. 20130003-
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Tidskriftsartikel (refereegranskat)abstract
- We demonstrate for the first time an RFID tag antenna which itself is humidity sensor and also provides calibration functionality. The antenna is comprised of T-matching network and horizontally meandered lines for impedance matching and reliable near-field communication. The novel contour design provides humidity sensing, and calibration functions whilst concurrently acts as a radiating element along with quadrangular capacitive tip-loading with covered middle portion for far-field communication. The inkjet printed prototypes of the antenna provide effective ambient humidity sensing while demonstrating stable RFID communication. The antenna has a compact size of 1.1 x 10.2 cm for 902-928MHz band.
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| 3. |
- Aslam, Bilal, et al.
(författare)
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Frequency signature chipless RFID tag with enhanced data capacity
- 2015
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Ingår i: IEICE Electronics Express. - : Institute of Electronics, Information and Communications Engineers (IEICE). - 1349-2543. ; 12:17
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Tidskriftsartikel (refereegranskat)abstract
- Frequency signature chipless RFID tag based on spurline resonator is presented in this letter. Resonant response of spurline is explained by analyzing the surface current distribution. Chipless tag consists of a data encoding circuit and two cross polarised monopole antennas. The tag has a data capacity of 16 bits in the range 2.13 to 4.1 GHz. Data capacity of data encoding circuit is enhanced by repositioning the spurlines. The prototype of the tag is fabricated on FR4 substrate. Developed tag can be used for cost effective identification of items in the industry.
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| 4. |
- Athar, Saima, et al.
(författare)
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On the efficient computation of single-bit input word length pipelined FFTs
- 2011
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Ingår i: IEICE Electronics Express. - : IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, KIKAI-SHINKO-KAIKAN BLDG MINATO-KU SHIBAKOEN 3 CHOME, TOKYO, 105, JAPAN. - 1349-2543. ; 8:17, s. 1437-1443
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Tidskriftsartikel (refereegranskat)abstract
- This letter describes an efficient architecture for the computation of fast Fourier transform (FFT) algorithms with single-bit input. The proposed architecture is aimed for the first stages of pipelined FFT architectures, processing one sample per clock cycle, hence making it suiable for real-time FFT computation. Since natural input order pipeline FFTs use large memories in the early stages, it is important to keep the word length shorter in the beginning of the pipeline. By replacing the initial butterflies and rotators of an architecture with that of the proposed block, the memory requirements can be significantly reduced. Comparisons with the commonly used single delay feedback (SDF) architecture show that more than 50% of the required memory can be saved in some cases.
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| 5. |
- Chen, Xiaowen, et al.
(författare)
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Cooperative communication based barrier synchronization in on-chip mesh architectures
- 2011
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Ingår i: IEICE Electronics Express. - : Institute of Electronics, Information and Communications Engineers (IEICE). - 1349-2543. ; 8:22, s. 1856-1862
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Tidskriftsartikel (refereegranskat)abstract
- We propose cooperative communication as a means to enable efficient and scalable barrier synchronization on mesh-based many-core architectures. Our approach is different from but orthogonal to conventional algorithm-based optimizations. It relies on collaborating routers to provide efficient gather and multicast communication. In conjunction with a master-slave algorithm, it exploits the mesh regularity to achieve efficiency. The gather and multicast functions have been implemented in our router. Synthesis results suggest marginal area overhead. With synthetic and benchmark experiments, we show that our approach significantly reduces synchronization completion time and increases speedup.
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| 6. |
- Chen, Xiaowen, et al.
(författare)
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Cooperative communication for efficient and scalable all-to-all barrier synchronization on mesh-based many-core NoCs
- 2014
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Ingår i: IEICE Electronics Express. - : Institute of Electronics, Information and Communications Engineers (IEICE). - 1349-2543. ; 11:18, s. 20140542-
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Tidskriftsartikel (refereegranskat)abstract
- On many-core Network-on-Chips (NoCs), communication is on the critical path of system performance and contended synchronization requests may cause large performance penalty. Different from conventional algorithm-based approaches, the paper addresses the barrier synchronization problem from the angle of optimizing its communication performance and proposes cooperative communication as a means to achieve efficient and scalable all-to-all barrier synchronization on mesh-based many-core NoCs. With the cooperative communication, routers collaborate with one another to accomplish a fast barrier synchronization task. The cooperative communication is implemented in our router at low cost. Through comparative experiments, our approach evidently exhibits high efficiency and good scalability.
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| 7. |
- Habib, A., et al.
(författare)
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Directly printable compact chipless RFID tag for humidity sensing
- 2017
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Ingår i: IEICE Electronics Express. - : Institute of Electronics Information Communication Engineers. - 1349-2543. ; 14:10
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Tidskriftsartikel (refereegranskat)abstract
- In this letter, 8-bit paper based printable chipless tag is presented. The tag not only justifies the green electronic concept but also it is examined for sensing functionality. The compact tag structure comprises of seven L-shaped and one I-shaped dipole structure. These conducting tracks/dipole structures are of silver nano-particle based ink having a conductivity of 1.1 × 107 S/m. Each conducting track yields one bit corresponding to one peak. The tag design is optimized and analyzed for three different flexible substrates i.e. paper, Kapton® HN, and PET. The tag has ability to identify 28 = 256 objects, by using different binary combinations. The variation in length of particular conducting strip results in a shift of peak for that specific conducting track. This shift corresponds to logic state-1. The response of the tag for paper, Kapton® HN, and PET substrates is observed in the frequency band of 2.2-6.1 GHz, 2.4-6.3 GHz, and 2.5-6.5 GHz, respectively. The tag has an attractive nature because of its easy printability and usage of low-cost, flexible substrates. The tag can be deployed in various low-cost sensing applications.
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| 8. |
- Habib, A., et al.
(författare)
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Frequency signatured directly printable humidity sensing tag using organic electronics
- 2017
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Ingår i: IEICE Electronics Express. - : Institute of Electronics Information Communication Engineers. - 1349-2543. ; 14:3
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Tidskriftsartikel (refereegranskat)abstract
- In this paper chipless RFID tag, capable of carrying 9-bit data is presented. The tag is optimized for several flexible substrates. With growing information and communication technology, sensor integration with data transmission has gained significant attention. Therefore, the tag with the same dimension is then optimized using paper substrate. For different values of permittivity, the relative humidity is observed. Hence, besides carrying information bits, the tag is capable of monitoring and sensing the humidity. The overall dimension of the tag comprising of 9 ring slot resonators is 7 mm. Due to its optimization on the paper substrate, the tag can be an ideal choice for deploying in various low-cost sensing applications.
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| 9. |
- Hu, Wenmin, et al.
(författare)
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Self-selection pseudo-circuit : a clever crossbar pre- allocation
- 2012
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Ingår i: IEICE Electronics Express. - : Institute of Electronics, Information and Communications Engineers (IEICE). - 1349-2543. ; 9:6, s. 558-564
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Tidskriftsartikel (refereegranskat)abstract
- This paper proposes self-selection pseudo- circuit (SP), a simple and effective approach to increase switch connection reusing rate and improve the network performance. It especially suits the network in which the performance is dominated by the number of hops. In SP scheme, multiple switch connections are allowed to be reserved for one inport, and the flit can reuse the partial switch connection(s) based on the routing information. For the evaluation with the traces from Splash-2, SP reduces the interconnection latency by up to 21.6% (16.9% average) with 16-core CMP configuration, and 22.2% ( 19.5 on average) with 64- core CMP configuration. Evaluated with synthetic traffic, the proposed scheme decreases the latency up to 19% ( 16% average).
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| 10. |
- Iqbal, M. S., et al.
(författare)
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FSS inspired polarization insensitive chipless RFID tag
- 2017
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Ingår i: IEICE Electronics Express. - : Institute of Electronics Information Communication Engineers. - 1349-2543. ; 14:10
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Tidskriftsartikel (refereegranskat)abstract
- A polarization insensitive, compact, fully-passive bit encoding structure exhibiting 1 : 1 resonator-to-bit correspondence is presented. Inspired by frequency selective surface (FSS) based microwave absorbers, the structure readily operates as a chipless radio frequency identification (RFID) tag. The unit cell is composed of several concentric hexagonal loops. Finite repetitions of the unit cell constitute the proposed RFID tag in its entirety. The required bit sequence is encoded in the frequency domain by addition or omission of corresponding nested resonant elements. A functional prototype is fabricated on a commercial-grade grounded FR4 substrate, occupying a physical footprint of 23 × 10mm2 while offering a capacity of 14 bits. The proposed tag boasts a minuscule profile, and demonstrates polarization insensitivity as well as stable oblique angular performance.
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| 11. |
- Javeda, Nimra, et al.
(författare)
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16-bit frequency signatured directly printable tag for organic electronics
- 2016
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Ingår i: IEICE Electronics Express. - : Institute of Electrical and Electronics Engineers (IEEE). - 1349-2543. ; 13:11
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Tidskriftsartikel (refereegranskat)abstract
- A compact 16-bit chipless RFID moisture sensor tag with a size of 13.2 x 19.6mm(2) is designed, fabricated and analyzed. The presented moisture sensor tag is realized on a paper substrate with silver nano particle based ink patches as conducting material. The frequency band of operation is 0.5 to 14 GHz having an overall bandwidth of 13.5 GHz. It is loaded with slots of different lengths and widths, etched on the conductive material. The tag exhibits stable sensing characteristic towards moisture in the real environment. The flexible, sensitive and environmental friendly nature of the proposed tag makes it suitable for wider, low-cost and organic electronics applications.
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| 12. |
- Khan, Umar Hasan, et al.
(författare)
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Novel chipless displacement sensor circuit using spurline resonantor
- 2016
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Ingår i: IEICE Electronics Express. - : Institute of Electronics Information Communication Engineers. - 1349-2543. ; 13:23
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Tidskriftsartikel (refereegranskat)abstract
- A novel uni-dimensional chipless displacement sensor circuit based on spurline resonators is presented. Sensor circuit design consists of two components: series of spurline resonators and a selector element. In response to displacement, the selector element slides over the spurline resonator slots that translating this movement into a corresponding change in the circuit's frequency response. The designed circuit offers a capacity of 16 bits in the 2-4.2 GHz frequency band. Half of the bits are designated as the sensory bits, while the other half are attributed as the ID bits. The formulated sensor has a dynamic range from 0-3.75 mm and a minimum resolution of 0.25 mm. The proposed sensor is a prime candidate for deployment in smart cities for ubiquitous infrastructural health monitoring.
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| 13. |
- Li, Yang, et al.
(författare)
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Round-trip latency prediction for memory access fairness in mesh-based many-core architectures
- 2014
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Ingår i: IEICE Electronics Express. - : Institute of Electronics, Information and Communications Engineers (IEICE). - 1349-2543. ; 11:24, s. 20141027-
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Tidskriftsartikel (refereegranskat)abstract
- In mesh-based many-core architectures, processor cores and memories reside in different locations (center, corner, edge, etc.), therefore memory accesses behave differently due to their different communication distances. The latency difference leads to unfair memory access and some memory accesses with very high latencies, degrading the system performance. However, improving one memory access's latency can worsen the latency of another since memory accesses contend in the network. Therefore, the goal should focus on memory access fairness through balancing the latencies of memory accesses while ensuring a low average latency. In the paper, we address the goal by proposing to predict the round-trip latencies of memory access related packets and use the predicted round-trip latencies to prioritize the packets. The router supporting fair memory access is designed and its hardware cost is given. Experiments are carried out with a variety of network sizes and packet injection rates and prove that our approach outperforms the classic round-robin arbitration in terms of average latency and LSD1. In the experiments, the maximum improvement of the average latency and the LSD are 16% and 48% respectively.
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| 14. |
- Rauf, Shahid, et al.
(författare)
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Triangular loop resonator based compact chipless RFID tag
- 2017
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Ingår i: IEICE Electronics Express. - : IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG. - 1349-2543. ; 14:4
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Tidskriftsartikel (refereegranskat)abstract
- A novel, frequency selective surface (FSS) inspired, fully passive, chipless data encoding circuit capable of being operated as a radio frequency identification (RFID) tag is presented. The tag is composed of finite repetitions of the unit cell realized on a grounded FR4 substrate having an overall size of 27.5 x 30mm(2). The unit cell is made up of several triangle-shaped resonators patterned in a looped fashion. Variation in the geometric structure of the tag, achieved by addition or removal of nested loops, corresponds to a specific bit sequence. Each sequence is represented in the spectral domain as a unique frequency signature of the resonators. The proposed 10-bit tag covers the spectral range from 4 to 11 GHz. The tag is compact, robust, and exhibits a stable response to impinging signals at different angles of incidence.
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| 15. |
- Riaz, M. A., et al.
(författare)
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Novel T-shaped resonator based chipless RFID tag
- 2017
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Ingår i: IEICE Electronics Express. - : Institute of Electronics Information Communication Engineers. - 1349-2543. ; 14:18
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Tidskriftsartikel (refereegranskat)abstract
- A novel, frequency selective surface (FSS) based, data encoding structure amenable to be used as a chipless RFID tag is proposed. The data encoding structure is made up of finite repetitions of a unit cell fabricated on commercially available grounded FR4 substrate having physical dimensions of 15 × 15mm2. The unit cell is composed of numerous T-shaped resonant elements arranged as two atypical sets of concentric nested loops. Alteration in geometry of the encoding circuit, attained by inclusion or omission of nested resonators, corresponds to a particular data sequence. Each encoded data sequence is manifested in the frequency domain as a distinct spectral signature. The proposed 10-bit tag is both compact and robust, and remains interrogable in response to illuminating electromagnetic waves at various angles of incidence.
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| 16. |
- Satti, J. A., et al.
(författare)
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Highly-dense flexible chipless RFID tag
- 2017
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Ingår i: IEICE Electronics Express. - : IEEE. - 1349-2543. ; 14:18
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Tidskriftsartikel (refereegranskat)abstract
- A 27-bit circular shaped, highly-dense, fully printable chipless radio frequency identification (RFID) tag is presented in this letter. High data capacity is provided in a compact size. The total dimension of the tag is 22 × 22mm2. For exciting the tag, the linearly polarized incident plane wave is used. The circular shaped tag structure is analyzed for three different substrates, i.e., Rogers RT/duroid®/5870, Taconic TLX-0 and DuPont™ Kapton® HN. The spectral range for Rogers RT/duroid®/5870 is 3.3-13.5 GHz, 3.4-13.6 GHz for Taconic TLX-0 and 3.7-15.1 GHz for DuPont™ Kapton® HN substrate. Flexibility is achieved by using Kapton® HN substrate. The presented tag is low-cost and flexible; hence it can be easily deployed on wide range of objects.
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| 17. |
- Shahid, Humayun, et al.
(författare)
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Novel QR-incorporated chipless RFID tag
- 2019
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Ingår i: IEICE Electronics Express. - : IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG. - 1349-2543. ; 16:5
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Tidskriftsartikel (refereegranskat)abstract
- This work ideates a novel approach for designing a QR-incorporated data encoding structure that functions as a fully-passive, chipless radio frequency identification (RFID) tag. Several concentric square-shaped resonant slots embedded strategically within a QR-patterned region constitute the tag. A functional prototype is realized over an ungrounded Duroid (R) 5880 substrate, and the same is evaluated for its electromagnetic performance. The tag performs encoding of up to 118 data bits distributed across spectral and optical domain in a compact form factor measuring 55 x 55 mm(2). Possible applications of the formulated tag include multi-layer authentication for secure access control in smart cities and connected homes.
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| 18. |
- Uchida, Hiroyuki, et al.
(författare)
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Room-temperature operation of 1.55 um wavelength-range GaN/AlN quantum well intersubband photodetectors
- 2005
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Ingår i: IEICE Electronics Express. - : Institute of Electronics, Information and Communications Engineers (IEICE). - 1349-2543. ; 2:22, s. 566-571
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Tidskriftsartikel (refereegranskat)abstract
- The room-temperature operation of a GaN/AlN quantum well infrared photodetector (QWIP) using the intersubband transition (ISBT) in a GaN/AlN multiple quantum well (MQW) was demonstrated for the first time. The GaN/AlN QWIP was operated under DC biasing with a vertically conductive geometry to the MQW layer. A clear photoinduced response was observed for P polarized 1.47µm light irradiation. Dependencies of the photoresponse on the applied DC bias voltage, and the polarization and wavelength of incident light were evaluated for the GaN/AlN QWIP. The maximum responsivity was estimated to be 0.11mA/W for a DC bias of 15V at room temperature.
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| 19. |
- Wang, Z., et al.
(författare)
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VP-Router : On balancing the traffic load in on-chip networks
- 2018
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Ingår i: IEICE Electronics Express. - : Institute of Electronics Information Communication Engineers. - 1349-2543. ; 15:22
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Tidskriftsartikel (refereegranskat)abstract
- Along with the scaling up for network-on-chips (NoC), the network traffic grows increasingly, and generally the central region is easily to become the traffic hotspots. The problem of unbalanced traffic can lead to a part of network links becoming the bottleneck of network communication, and thus hurt the network and system performance. In this paper, we propose load-balanced link distribution method, which is intended to allocating physical channels according to the traffic load on each link. To support connecting multiple physical channels between two routers, we propose a novel concept of virtual port, and design a low-cost multi-port router called virtual port router (VP-Router). Compared to the network with traditional routers, the network with VP-Routers can effectively balance the network traffic load on links. The experiments with SPLASH2 benchmarks exhibit that VP-Router performs 6.3% and 9.0% better in energy-delay-product (EDP) for 4 × 4 and 8 × 8 mesh networks respectively. As for system throughput, VP-Router improves by about 3.5% and 5.8% on average respectively.
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