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encryption algorithm (23 results), Creative Algorithms (2 results), Algorithmics (1 results)
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- Fsum Frontend (5)
- Fsum Frontend is a free and easy-to-use tool that allows to compute message digests, checksums and HMACs for files and text strings. It supports drag-and-drop and you can handle multiple files at once. The checksum generated can be used to verify the integrity of the files. It supports 96 algorithms:...
- Software downloads 2008-04-18
- A Distributed algorithm for Managing Multi-Target Identities in Wireless Ad-Hoc Sensor Networks
- This paper presents a scalable distributed algorithm for computing and maintaining multi-target identity information. The algorithm builds on a novel representational framework, Identity-Mass Flow, to overcome the problem of exponential computational complexity in man-aging multi-target identity explicitly. The algorithm uses local information to efficiently update the global multi-target identity information...
- White papers
- MSDN Webcast: New Cryptography: algorithms, APIs, and Architecture (Level 300)
- Why is Cryptographic Application Programming Interface (CAPI) version 1.0 being retired? Is the architecture of the new Open Cryptographic API for Windows (Cryptography API: Next Generation [CNG]) any better than CAPI version 2.0? What is Suite-B? These are some of the questions the presenter answers in this information-packed and fast-paced...
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- Mapping Wireless Communication algorithms to a Reconfigurable Architecture
- This paper discusses the implementation of multi-standard communication systems in dynamically reconfigurable heterogeneous hardware. An overview of a wireless LAN communication system, namely HiperLAN/2, and a Bluetooth communication system is given. Possible implementations of these systems in a reconfigurable architecture are discussed. Suggestions for future activities in the Adaptive Wireless...
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- Reducing Energy Consumption of Disk Storage Using Power-Aware Cache Management
- Reducing energy consumption is an important issue for data centers. Among the various components of a data center, storage is one of the biggest consumers of energy. Previous studies have shown that the average idle period for a server disk in a data center is very small compared to the...
- White papers
- Hierarchical Power-Aware Routing in Sensor Networks
- This paper discusses online power-aware routing in large sensor networks. The authors seek to optimize the lifetime of the network. The paper develops an approximation algorithm called max-min zPmin that has a good empirical competitive ratio. To ensure scalability, it introduces a hierarchical algorithm, which is called zone-based routing. The...
- White papers
- Architecture and algorithms for an IEEE 802.11-Based Multi-Channel Wireless Mesh Network
- Even though multiple non-overlapped channels exist in the 2.4GHz and 5GHz spectrum, most IEEE 802.11-based multi-hop ad hoc networks today use only a single channel. As a result, these networks rarely can fully exploit the aggregate bandwidth available in the radio spectrum provisioned by the standards. This prevents them from...
- White papers
- Online Power-Aware Routing in Wireless Ad-hoc Networks
- This paper discusses online power-aware routing in large wireless ad-hoc networks for applications where the message sequence is not known. The paper seeks to optimize the lifetime of the network. The paper shows that online power-aware routing does not have a constant competitive ratio to the off-line optimal algorithm. This...
- White papers
- Bandwidth-Constrained Clustering in Ad Hoc Networks
- This paper presents a survey of the basic mechanisms and properties of existing clustering algorithms for wireless ad hoc networks. Based on this evaluation, the paper then proposed a new algorithm with improved stability and a lower communication overhead. This is partly achieved by using a maintenance function that modifies...
- White papers
- A Genetic-algorithm Based Mobile Sensor Network Deployment algorithm
- This paper describes a Genetic-Algorithm (GA) based deployment algorithm of mobile sensor network. The algorithm is designed for real-time online deployment for maximum coverage of the environment. The paper presents the details on the algorithm and the implementation, including the major components in the design: recombination, mutation, and the fitness...
- White papers
- Improving Throughput Performance of the IEEE 802.11 MAC Layer Using Congestion Control Methods
- This paper presents and analyzes adaptive fragmentation algorithms for enhancing throughput performance under a slow fading channel. It first studies the similarities between the TCP protocol and MAC protocol. Next, it proposes an adaptive approach to change the fragmentation size dynamically according to variations of the wireless channel quality. Simulation...
- White papers
- Bayesian Blind Parafac Receivers for DS-CDMA Systems
- This paper proposes a new Bayesian blind detection/identification algorithm for CDMA system in presence of spatial diversity at the receiver. Such algorithm provides good performance even for short frame length (typically, 10 symbol periods) and for large system load. Furthermore, simulation results show that the proposed method is close to...
- White papers
- Performance Evaluation of Voice Handovers in Real 802.11 Networks
- This paper looks at the performance of 802.11 networks for real-time voice communication. In particular, the focus is on triggering timely handovers of voice calls from the 802.11 network to the cellular infrastructure. An algorithm is devised that uses link layer, IP, and application measurements to determine when best to...
- White papers
- Load Balanced Short Path Routing in Wireless Networks
- This paper initiates the study of wireless network routing with the aim of achieving good performance in terms of both stretch factor and load-balancing ratio. The paper presents algorithms which can achieve constant competitive factors for both measures when all the nodes are located in a narrow strip. In addition,...
- White papers
- Multi-Directional Distributed Searches With Aggregation
- Competition and cooperation can boost the performance of search. Both can be implemented with a portfolio of algorithms which run in parallel, give hints to each other and compete for being the first to finish and deliver the solution. This paper presents a new generic framework for the application of...
- White papers
- Centralized Channel Assignment and Routing algorithms for Multi-Channel Wireless Mesh Networks
- The IEEE 802.11 Wireless LAN standards allow multiple non-overlapping frequency channels to be used simultaneously to increase the aggregate bandwidth available to end-users. Such bandwidth aggregation capability is routinely used in infrastructure mode operation, where the traffic to and from wireless nodes is distributed among multiple interfaces of an access...
- White papers
- Mapping Wireless Communication algorithms to a Recongurable Architecture
- This paper discusses the implementation of multi-standard communication systems in dynamically reconfigurable heterogeneous hardware. An overview of a wireless LAN communication system, namely HiperLAN/2, and a Bluetooth communication system will be given. Possible implementations of these systems in a reconfigurable architecture are discussed. Suggestions for future activities in the Adaptive...
- White papers
- An Auction algorithm for Procuring Wireless Channel in a Heterogenous Wireless Network
- This paper develops an auction algorithm for procuring wireless channel by a wireless node in a heterogeneous wireless network and assumes that the service providers of the heterogeneous wireless network are selfish and non-cooperative in the sense that they are interested in maximizing their own utilities. The wireless user is...
- White papers
- Blind DS-CDMA Data and Channel Estimation With an Antenna Array: GSIC/MP/PSP Approach
- This paper considers a blind DS-CDMA data and channel estimation algorithm using a uniform circular array. The channels are assumed to be sparse and static during a short packet transmission period. The channel estimates for different users yield the explicit estimates of the angle and time of arrivals, which are...
- White papers
- Self Learning Call Admission Control for Multimedia Wireless DS-CDMA Systems
- The call admission problem for wireless CDMA systems is formulated as a semi-Markov decision process with constraints on the blocking probabilities and SIR (signal to interference ratio). This paper shows that the optimal call admission policy can be computed via a stochastic gradient algorithm. Similar to neuro-dynamic programming algorithms the...
- White papers
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