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Minimum duration outages have been introduced in [1, 2] for lognormal shadow fading where the durations of signal fades were considered in evaluating outages. In this paper we develop and analyze such minimum duration outages for channels susceptible to Rayleigh fading. The results show that under typical Doppler frequencies the outages due to Rayleigh(More)
We review the design, selected applications and parallel performance of WiPPET, a general parallel simulation testbed for various types of wireless networks. WiPPET has been written in TeD/C++, a new object-oriented modeling framework that isolates network modeling from the underlying parallel discrete event simulator. We describe the techniques for(More)
We describe the TED/C++ implementation of WIPPET, a parallel simulation testbedfor evaluating radio resource management algorithms and wireless transport protocols. Versions 0.3 and 0.4 of the testbed model radio propagation (longand short-scale fading and inteqerence) and protocols for integrated radio resource management in mobile wireless voice networks(More)
In future wireless systems such as 3G and beyond, increasing the downlink capacity becomes more important due to potential high data rate applications such as wireless internet access. Turbo codes and downlink transmit diversity are two of the most explored techniques to improve performance and capacity. In this paper, we evaluate the performance of turbo(More)
The main purpose of this study was to evaluate oral bioavailability of the poorly water-soluble drug fenofibrate when liposomes containing a bile salt were used as oral drug delivery systems. Liposomes composed of soybean phosphotidylcholine (SPC) and sodium deoxycholate (SDC) were prepared by a dry-film dispersing method coupled with sonication and(More)
Efforts to improve the oral bioavailability of cyclosporine A (CyA) remains a challenge in the field of drug delivery. In this study, glyceryl monooleate (GMO)/poloxamer 407 cubic nanoparticles were evaluated as potential vehicles to improve the oral bioavailability of CyA. Cubic nanoparticles were prepared via the fragmentation of a bulk GMO/poloxamer 407(More)
Glyceryl monooleate (GMO)/poloxamer 407 cubic nanoparticles were investigated as potential oral drug delivery systems to enhance the bioavailability of the water-insoluble model drug simvastatin. The simvastatin-loaded cubic nanoparticles were prepared through fragmentation of the GMO/poloxamer 407 bulk cubic-phase gel using high-pressure homogenization.(More)
This work was aimed at investigating the feasibility of fluid-bed coating as a new method to prepare cyclodextrin inclusion complex. The inclusion complex of the model drug piroxicam (PIX) and 2-hydroxypropyl-beta-cyclodextrin (HPCD) in aqueous ethanol solution was sprayed and deposited onto the surface of the pellet substrate upon removal of the solvent.(More)
We present a new method to analyze the performance of Reed-Solomon codes for hybrid-ARQ over Rayleigh fading channels with imperfect interleaving. Using the asymptotic results of level crossings of the faded envelope, we characterize the packet error probability as a function of the Doppler frequency and mean signal-to-noise ratio (SNR). We then use the(More)
We describe the <sc>TeD</sc>/C++ implementation of <i><sc>WiPPET</sc></i>, a parallel simulation testbed for mobile wireless networks. In this article we emphasize the techniques for modeling of radio propagation (long- and short-scale fading and interference) and protocols for integrated radio resource management in mobile wireless voice networks. The(More)