Alcatel-Lucent

About: Alcatel-Lucent is a based out in Stuttgart, Germany. It is known for research contribution in the topics: Signal & Network packet. The organization has 37003 authors who have published 53332 publications receiving 1430547 citations. The organization is also known as: Alcatel-Lucent S.A. & Alcatel.

Pulse-overlapped dispersion-managed data transmission and intrachannel four-wave mixing.

Abstract: We show that strong overlap of adjacent pulses in dispersion-managed return-to-zero transmission reduces pulse-to-pulse interaction and timing jitter. The limiting factors for this pulse-overlapped transmission are the amplitude fluctuations and the ghost pulse generation induced by four-wave mixing between spectral components within a single channel.

Redox capacity and direct current electron conductivity in electroactive materials

Abstract: Donnees obtenues pour le poly [Os(bpy) 2 (vpy 2 ] (ClO 4 ) x (x=0-3, bpy=bipyridine-2,2' et vpy=vinyl-4 pyridine)

The ERICA switch algorithm for ABR traffic management in ATM networks

Abstract: This paper describes the "explicit rate indication for congestion avoidance" (ERICA) scheme for rate-based feedback from asynchronous transfer mode (ATM) switches. In ERICA, the switches monitor their load on each link and determine a load factor, the available capacity, and the number of currently active virtual channels. This information is used to advise the sources about the rates at which they should transmit. The algorithm is designed to achieve high link utilization with low delays and fast transient response. It is also fair and robust to measurement errors caused by the variations in ABR demand and capacity. We present performance analysis of the scheme using both analytical arguments and simulation results. The scheme is being considered for implementation by several ATM switch manufacturers.

High accuracy bloom filter using partitioned hashing

Abstract: A method and system for generating a bloom filter by mapping into respective groups each of a plurality of initial keys according to a first hash function and mapping each group hashed key into a bloom filter using k respective hash functions.

Automated containment of network intruder

Abstract: The invention in the preferred embodiment features a system (200) and method for automatically segregating harmful traffic from other traffic at a plurality of network nodes including switches and routers. In the preferred embodiment, the system (200) comprises an intrusion detection system (105) to determine the identity of an intruder and a server (130) adapted to automatically install an isolation rule on the one or more network nodes (114, 115, 116) to quarantine packets from the intruder. The isolation rule in the preferred embodiment is a virtual local area network (VLAN) rule or access control list (ACL) rule that causes the network node to route any packets from the intruder into a quarantine VLAN or otherwise isolate the traffic from other network traffic. In large networks, the isolation rule may be installed on a select plurality of network nodes under the gateway router (104) associated with the node at which the intruder first entered the network (100).