Learn More
Distributed denial-of-service (DDoS) attacks can be regarded as the most serious threats for current Internet. This paper presents a two-tier coordination approach for detecting and mitigating DDoS attacks. The first tier traffic filter (1st-TF) filters suspicious traffic for possible flooding. This is achieved by using proactive tests to identify and(More)
This paper proposes a 3 GHz built-in jitter measurement (BIJM) circuit to measure clock jitter on high-speed transceivers and SoC systems. The proposed BIJM circuit adopts a high timing resolution and self-calibration techniques and discusses the measurement error issues. The measurement error source is analyzed each block in BIJM. To eliminate process(More)
We report a novel diindenothieno[2,3-b]thiophene ladder-type hexacyclic arene for constructing a donor-acceptor copolymer PDITTDTBT. A device based on PDITTDTBT:PC(71)BM exhibited a high V(oc) of 0.92 V with an impressive PCE of 5.8%, while a PDITTDTBT:DMPCBA-based device showed an extra high V(oc) of 1.14 V.
  • 1