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We introduce three adaptive routing algorithms for the hierarchical interconnection network TESH (tori-connected meshes) and evaluate their hardware costs and delays. TESH, which consists of a hierarchical torus interconnection between meshes as a basic module, is one of the k-ary n-cube networks, for which many adaptive routing algorithms have already been proposed. Adaptive routings for TESH have...
The effect of intense terahertz (THz) pulses on single-walled carbon nanotubes is investigated by THz-pump and optical-probe experiments. Ultrafast electroabsorption signals possessing a THz bandwidth are observed at exciton resonances in the optical communication wavelength and at room temperature.
As semiconductor technologies are aggressively advanced, the problem of parameter variations is emerging. Process variations in transistors affect circuit delay, resulting in serious yield loss. Considering the situations, variationaware designs for yield enhancement interest researchers. This paper investigates to exploit the statistical features in circuit delay and to cascade dependent instructions...
The advance in semiconductor technologies presents the serious problem of parameter variations. They affect threshold voltage of transistors and thus circuit delay has variability. Increasing the supply voltage to reduce the delay should not be a solution, since it increases power consumption, which is another serious problem in microprocessor designs. This paper proposes to combine recently-proposed...
Wireless ad hoc networks attract interests of researchers. In such networks, data packets are relayed by nodes from a source node to a destination node. This is referred to as multi-hop communication. For such system, it is known that the IEEE802.11 DCF is not efficient. Then, in order to improve the efficiency, several methods were proposed conventionally. However, most of them are not aware of realistic...
We demonstrate a simple pulse shaper to form almost rectangular shaped pulses. By using this pulse shaper a significant performance improvement of a fibre based all-optical switch for 160 Gb/s regenerative demultiplexing is achieved.
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