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- Wi-Fi 101: Multipath environments and how they affect Wi-Fi propagation
- Diversity dual antennas help multipath issuesDiversity dual antennas help multipath issues. 802.11n MIMO systems actually utilize multipath to its advantage.
- Tags: Wireless LANs, georgeou, environment, Wi-Fi
- Discussion threads 2007-10-18
- Analysis of MPLS Multipath Routing With the Failure and Repair of LSPs
- Efficient operation of multipath routing is considered as one of the important aspects in MPLS traffic engineering. Multipath routing has an advantage over the traffic routing based on single shortest paths because single path routing may lead to unbalanced traffic situations and degraded QoS Quality of Service. This paper proposes...
- Tags: MPLS, Analysis, Multipath, Network Technology, Networking
- White papers 2006-08-31
- Multipath Live Streaming Via TCP: Performance and Benefits
- Recently, a number of studies have demonstrated that multipath streaming is a promising technique to overcome the challenges of multimedia streaming over the best-effort Internet. These studies all focus on UDP-based streaming. Motivated by the wide use of TCP for streaming in practice and the earlier results on single-path TCP...
- Tags: Performance, Benefit, TCP, Live Streaming, Tcp/Ip, Networking
- White papers 2006-08-10
- Multipath for Linux
- Greetings,We are implementing a cluster solution with Linux RH Enterprise Edition 4 in a Proliant DL380 G4 and a MSA 500 Storage, with Service Guard for Linux and Multipath Software and everything is working well except the multipath funcionality, which should be able to view the disks at MSA trough...
- Tags: UNIX, Operating systems, Servers, Linux
- Q&A 2006-03-31
- Highly-Resilient, Energy-Efficient Multipath Routing in Wireless Sensor Networks
- Previously proposed sensor network data dissemination schemes require periodic low-rate flooding of data in order to allow recovery from failure. The paper considers constructing two kinds of multipaths to enable energy efficient recovery from failure of the shortest path between source and sink. Disjoint multipath has been studied in the...
- Tags: Recovery, Network, Wireless Sensor Network, Multipath, Wireless
- White papers 2008-01-01
- Improving Channel Estimation in OFDM Systems for Sparse Multipath Channels
- This paper describes an algorithm for sparse channel estimation applicable to orthogonal frequency division multiplexing systems. The proposed algorithm uses a least squares LS technique for channel estimation and a generalized Akaike information criterion to estimate the channel length and tap positions. This effectively reduces the signal space of the...
- Tags: Algorithm, Indian Institute Of Technology, Channel Estimation, OFDM, Engineering, Wireless
- White papers 2005-01-01
- Dynamically Adaptive Multipath Routing Based on AODV
- Mobile ad hoc networks are typically characterized by high mobility and frequent link failures that result in low throughput and high end-to-end delay. To reduce the number of route discoveries due to such broken paths, multipath routing can be utilized so that alternate paths are available. Current approaches to multipath...
- Tags: Path, Multipath
- White papers
- Combining Multipath Routing and Congestion Control for Robustness
- Flexible routing schemes mitigate some of the problems associated with uncertain traffic patterns and workloads by making the exact location of capacity less important: if there is available capacity the routing scheme will find it. This paper proposes a combined multipath routing and congestion control architecture that can provide performance...
- Tags: Traffic, Congestion, Multipath, Engineering, Performance Management, Human Resources, Workforce Management
- White papers 2006-02-24
- Schedulable Regions and Equilibrium Cost for Multipath Flow Control: The Benefits of Coordination
- This paper considers deterministic differential equation models for the varying number of flows in a network. These arise naturally as limits of stochastic models under joint scaling of flow arrival rates and network capacities. This paper compares these dynamics under coordinated multipath routing and parallel, uncoordinated routing. The paper shows...
- Tags: Multipath, Benefits, Networking, Human Resources
- White papers 2006-02-24
- Efficient MIMO Equalization for Downlink Multi-Code CDMA: Complexity Optimization and Comparative Study
- This paper presents an efficient LMMSE chip equalizer to suppress the interference caused by the multipath fading channel in the MIMO Multi-Code CDMA downlink. The block-Toeplitz structure in the correlation matrix is approximated with a block circulant matrix. An FFT-based algorithm is applied to avoid the Direct-Matrix-Inverse DMI in the...
- Tags: Algorithm, Matrix, Nokia Corp., Optimization, MIMO, Engineering
- White papers 2004-08-27
- 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...
- Tags: Algorithm, Mobile, Network, Sensor, Engineering
- White papers
- Towards Internet-Wide Multipath Routing
- Today's Internet would be more efficient and robust if routers could flexibly divide traffic over multiple paths. Often, having just a few alternate paths is sufficient for customizing paths for different applications, improving security, reacting to failures and balancing load. Yet alternate paths are often unavailable, due to two barriers....
- Tags: Path, Multipath, Internet, Productivity
- White papers 2007-06-15
- Improving Load Balancing With Multipath Routing
- Internet service providers have to provision network resources to optimize bandwidth utilization. Dynamic routing protocols take traffic variations into account to control the load distribution. Multipath routing protocols attempt to take advantage of the path diversity to bring network robustness and reliability. Indeed, with a specific traffic engineering policy, they...
- Tags: Network, Load Balancing, Routing Protocol, University Louis Pasteur, Network Technology, Networking
- White papers 2008-05-18
- Application of Genetic Algorithm for Large Scale Coverage Prediction in GSM Cellular Mobile System
- A considerable interest has been generated in finding solutions to predict average field strengths and multipath signals in macro-cells for radio cellular network. The predictions are required for a proper coverage planning and are the basis for the high-level network planning process. In this paper, well-known propagation path loss model...
- Tags: Algorithm, GSM, Genetic Algorithm, Engineering, Networking
- White papers 2005-05-26
- An Introduction to Multicarrier Modulation
- Multicarrier modulation helps to reduce the detrimental effects of multipath fading. Because of its robustness to multipath, and the ease of implementing it in transmitters and receivers using the Fast Fourier Transform FFT, the MCM concept is growing rapidly in practical importance. It can be found today in IEEE standards...
- Tags: Modulation, Multipath, University Of Toronto, WiMAX, Wireless LANs, Wireless
- White papers 2005-05-31
- Low Complexity OFDM Detector for Underwater Acoustic Channels
- An adaptive algorithm is proposed for OFDM signal detection on Doppler-distorted, time-varying multipath channels. The focus of the approach is on low complexity post-FFT signal processing. The receiver performs MMSE combining of signals received across an array, using adaptive channel estimation. Nonuniform Doppler compensation across subbands is performed using a...
- Tags: Algorithm, Channel, Performance, Massachusetts Institute Of Technology, Carrier, Receiver, Algorithm Performance, OFDM, Performance Management, Knowledge Management, Wireless, Human Resources, Workforce Management, Enterprise Software, Software
- White papers 2006-07-19
- Multipath Routing and Multiple Description Coding in Ad-Hoc Networks: A Simulation Study
- The nature of wireless multihop ad-hoc networks makes it a challenge to offer connections of an assured quality. In order to improve the performance of such networks, multipath routing in combination with Multiple Description Coding MDC has been proposed. By splitting up streams of multimedia traffic into several substreams (called...
- Tags: Network, Association For Computing Machinery, Multipath, Networking
- White papers 2004-10-07
- Multipath Routing in MPLS Networks - A Survey
- The paper presents the problem of multipath routing supporting the Quality of Service QoS in MPLS networks. First, the paper briefly surveys the mechanisms used for setting up data transmission channels. The paper considers those algorithms applied in conventional IP networks which are also used by the MPLS technology. Then,...
- Tags: MPLS, Survey, Multipath, Network Technology, Networking
- White papers 2007-01-08
- On Througput of Multipath Data Transmission Over Multihop Ad Hoc Networks
- Data transmission in ad hoc networks involves interactions between MAC-layer protocol and data forwarding along network-layer paths. These interactions have been shown to have significant effect on system performance. In this paper, their impact on the multipath data transmission system over multihop IEEE 802.11 MAC-based ad hoc networks is studied....
- Tags: IEEE 802.11, Washington State University, System Throughput, Wireless LANs, Wi-Fi, Wireless
- White papers 2006-07-04
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