Types of hybrid architectures survivor memory unit (SMU) is presented,which are applicable to IEEE 802.3 ab 1000 Base-T Gigabit Ethernet (GbE) transceiver. Area, power and decoder latency were taken into account and m...Types of hybrid architectures survivor memory unit (SMU) is presented,which are applicable to IEEE 802.3 ab 1000 Base-T Gigabit Ethernet (GbE) transceiver. Area, power and decoder latency were taken into account and most efficient architectures were compared to optimize area/power tradeoff in different kinds of applications. Suitable SMU architectures are given out respectively in area-restrict, power-restrict and latency-restrict designs. A power-efficient architecture was selected in our GbE project. It provides 48% improvement in area and 71% amelioration in power, compared to classical register exchange architecture (REA) SMU.展开更多
A high-speed and effective packet scheduling method is crucial to the performance of Gigabit routers. The paper studies the variable-length packet scheduling problem in Gigabit router with crossbar switch fabric and i...A high-speed and effective packet scheduling method is crucial to the performance of Gigabit routers. The paper studies the variable-length packet scheduling problem in Gigabit router with crossbar switch fabric and input queuing, and a scheduling method based on neural network is proposed. For the proposed method, a scheduling system structure fit for the variable-length packet case is presented first, then some rules for scheduling are given. At last, an optimal scheduling method using Hopfield neural network is proposed based on the rules. Furthermore, the paper discusses that the proposed method can be realized by hardware circuit. The simulation result shows the effectiveness of the proposed method.展开更多
In this paper,the feasibility and performance of millimeter wave(mm Wave)60 GHz ultra-wide band(UWB)systems for gigabit machine-to-machine(M2M)communications are analyzed.Specifically,based on specifications,channel m...In this paper,the feasibility and performance of millimeter wave(mm Wave)60 GHz ultra-wide band(UWB)systems for gigabit machine-to-machine(M2M)communications are analyzed.Specifically,based on specifications,channel measurements and models for both line-of-sight(LOS)and non-LOS(NLOS)scenarios,60 GHz propagation mechanisms are summarized,and 60 GHz UWB link budget and performance are analyzed.Tests are performed for determining ranges and antenna configurations.Results show that gigabit capacity can be achieved with omni-directional antennas configuration at the transceiver,especially in LOS conditions.When the LOS path is blocked by a moving person or by radiowave propagation in the NLOS situation,omni-directional and directional antennas configuration at the transceiver is required,especially for a larger range between machines in office rooms.Therefore,it is essential to keep a clear LOS path in M2M applications like gigabit data transfer.The goal of this work is to provide useful information for standardizations and design of 60 GHz UWB systems.展开更多
This paper proposes low-power high-efficiency multi-gigabit 60 GHz transceiver systems for short-range communications. 60 GHz muhi-gigabit on-off keying （OOK） receiver system-in-package （SIP） module is developed u...This paper proposes low-power high-efficiency multi-gigabit 60 GHz transceiver systems for short-range communications. 60 GHz muhi-gigabit on-off keying （OOK） receiver system-in-package （SIP） module is developed using a low temperature co-fired ceramic （LTCC） technology. Integrated with a low-power complementary metal oxide semiconductor （CMOS） OOK demodulator, the LTCC receiver module demonstrates Full-HD uncompressed video streaming at a distance of 1 m. A low-power and high-efficiency fully integrated OOK transceiver is also developed to be integrated in a handheld device. The transceiver consumes 67 mW at 10.7 Gb/ s and occupies an active footprint of 0.44 mm^2. With an on-board Yagi-Uda antenna, the transceiver achieves 10.7 Gb/s of data transmission, resulting in a high energy efficiency of 6.26 pJ/bit. The antenna-in-package module with the transceiver demon- strates mobile-to-display 1080p Full-HD video transmission over a distance of 60 cm.展开更多
基金National Science Fund for Creative ResearchGroups (No.60521002)Shanghai NaturalScience Foundation(No.037062022)
文摘Types of hybrid architectures survivor memory unit (SMU) is presented,which are applicable to IEEE 802.3 ab 1000 Base-T Gigabit Ethernet (GbE) transceiver. Area, power and decoder latency were taken into account and most efficient architectures were compared to optimize area/power tradeoff in different kinds of applications. Suitable SMU architectures are given out respectively in area-restrict, power-restrict and latency-restrict designs. A power-efficient architecture was selected in our GbE project. It provides 48% improvement in area and 71% amelioration in power, compared to classical register exchange architecture (REA) SMU.
文摘A high-speed and effective packet scheduling method is crucial to the performance of Gigabit routers. The paper studies the variable-length packet scheduling problem in Gigabit router with crossbar switch fabric and input queuing, and a scheduling method based on neural network is proposed. For the proposed method, a scheduling system structure fit for the variable-length packet case is presented first, then some rules for scheduling are given. At last, an optimal scheduling method using Hopfield neural network is proposed based on the rules. Furthermore, the paper discusses that the proposed method can be realized by hardware circuit. The simulation result shows the effectiveness of the proposed method.
基金supported by the State Key Laboratory of Millimeter Waves,Southeast University,China under grant No.K201517supported by the Fundamental Research Funds for the Central Universities under Grant No.2015 XS19.
文摘In this paper,the feasibility and performance of millimeter wave(mm Wave)60 GHz ultra-wide band(UWB)systems for gigabit machine-to-machine(M2M)communications are analyzed.Specifically,based on specifications,channel measurements and models for both line-of-sight(LOS)and non-LOS(NLOS)scenarios,60 GHz propagation mechanisms are summarized,and 60 GHz UWB link budget and performance are analyzed.Tests are performed for determining ranges and antenna configurations.Results show that gigabit capacity can be achieved with omni-directional antennas configuration at the transceiver,especially in LOS conditions.When the LOS path is blocked by a moving person or by radiowave propagation in the NLOS situation,omni-directional and directional antennas configuration at the transceiver is required,especially for a larger range between machines in office rooms.Therefore,it is essential to keep a clear LOS path in M2M applications like gigabit data transfer.The goal of this work is to provide useful information for standardizations and design of 60 GHz UWB systems.
文摘This paper proposes low-power high-efficiency multi-gigabit 60 GHz transceiver systems for short-range communications. 60 GHz muhi-gigabit on-off keying （OOK） receiver system-in-package （SIP） module is developed using a low temperature co-fired ceramic （LTCC） technology. Integrated with a low-power complementary metal oxide semiconductor （CMOS） OOK demodulator, the LTCC receiver module demonstrates Full-HD uncompressed video streaming at a distance of 1 m. A low-power and high-efficiency fully integrated OOK transceiver is also developed to be integrated in a handheld device. The transceiver consumes 67 mW at 10.7 Gb/ s and occupies an active footprint of 0.44 mm^2. With an on-board Yagi-Uda antenna, the transceiver achieves 10.7 Gb/s of data transmission, resulting in a high energy efficiency of 6.26 pJ/bit. The antenna-in-package module with the transceiver demon- strates mobile-to-display 1080p Full-HD video transmission over a distance of 60 cm.
