Path diversity works by setting up multiple parallel connections between the end points using the topological path redundancy of the network. In this paper, Forward Error Correction (FEC) is applied across multiple independent paths to enhance the endto-end reliability. Internet paths are modeled as erasure Gilbert-Elliot channels [1], [2]. First, it is shown that over any erasure channel, Maxi...

In this paper we consider feedback-based routing exploiting path diversity that jointly uses best path selection and flow control for optimality and stability. The contributions of the present paper are manifold. We show numerical evidence that routing performance are insensitive to rate coordination along available routes in practical scenarios. Route uncoordination arises in case of in-networ...

In this paper, a source coding technique exploiting packet path diversity is presented, which combines the individual benefits of MDC (multiple description coding) and LC (layer coding) for video transmission over wireless networks. Performance comparisons between LC and MDC are discussed at the beginning of this paper. Their advantages and disadvantages are concluded. An improved coding techni...

Years after the initial development of the current routing protocols we still lack an understanding of the impact of various parameters on the routes chosen in today’s Internet. Network operators are struggling to optimize their routing, but the effectiveness of those efforts is limited. In this article, we study sensitivity of routing stretch and diversity metrics to factors such as policies, ...

Cooperative communications is viewed as a mechanism for increasing the diversity order, robustness and energy efficiency of a wireless communication system. In this paper we explore the diversity gains offered due to the availability of multiple antenna mobile users that provide an alternate path from transmitter to destination. We propose a practical adaptive relaying technique for transmissio...

Biodiversity, a multidimensional property of natural systems, is difficult to quantify partly because of the multitude of indices proposed for this purpose. Indices aim to describe general properties of communities that allow us to compare different regions, taxa, and trophic levels. Therefore, they are of fundamental importance for environmental monitoring and conservation, although there is n...

A blind joint estimator for multipath diversity and PN code timing error is proposed in this paper for direct-sequence spread-spectrum signaling on a frequency-selective fading channel. In the multipath diversity combiner, a modi ed known modulus adaptive (KMA) algorithm is used to cope with time-varyingmultipath e ects and to perform multipath diversity combining in the blind mode. In the code...

In the IEEE 802.11a WLAN standard, orthogonal frequency division multiplexing (OFDM) modulation is employed. Diversity techniques are effective way to overcome multipath fading in the OFDM systems. A fractional sampling (FS) scheme is one of the diversity techniques with a single antenna. Through FS it is possible to separate multipath components and obtain diversity gain in OFDM. Though FS has...

This paper investigates a multiple-access communication receiver system that receives coded data modulated using DS-CDMA, with an antenna array in a multi-path propagation environment. We describe an iterative receiver that improves the initial estimates from the antenna array, and therefore reduces the multiple access inter-ference(MAI). We also introduce a technique to eeciently mitigate the ...

This study tests McGuire’s (1961, 1962, 1964, 1970) inoculation theory as a strategy to protect value-indiversity attitudes and investigates the impact of inoculation messages on minority and non-minority issue involvement. Results failed to support an overall inoculation effect, but instead indicate a more nuanced path to resistance within the organizational diversity context. Minority members...