Learn More
Using monoclonal antibodies we identified a group of eight polypeptides of rat liver nuclear envelopes that have common epitopes. Most or all of these proteins are structurally distinct, as shown by tryptic peptide mapping and analysis with polyclonal antibodies. While these polypeptides are relatively tightly bound to nuclear membranes, only one is an(More)
A novel form of protein-saccharide linkage consisting of single N-acetylglucosamine (GlcNAc) residues attached in O-linkages directly to the polypeptide backbone has been described (Holt, G. D., and G. W. Hart, 1986, J. Biol. Chem., 261:8049-8057). This modification was found on proteins distributed throughout the cell, although proteins bearing O-linked(More)
— Several recent standards such as IEEE 802.11a/g, IEEE 802.16, and ECMA Multi-band Orthogonal Frequency Division Multiplexing (MB-OFDM) for high data-rate Ultra-Wideband (UWB), employ bit-interleaved convolutionally-coded multicarrier modulation over quasi-static fading channels. Motivated by the lack of appropriate error rate analysis techniques for this(More)
2 " In the next three or four years Americans will have a chance to decide how decent a place this country will be to live in, and for generations to come. Already huge patches of once green countryside have been turned into vast, smog-filled deserts that are neither city, suburb, nor country, and each day-at a rate of some 3,000 acres a day-more(More)
— In this paper, we analyze the frequency-hopping orthogonal frequency-division multiplexing (OFDM) system known as Multiband OFDM for high-rate wireless personal area networks (WPANs) based on ultra-wideband (UWB) transmission. Besides considering the standard, we also propose and study system performance enhancements through the application of Turbo and(More)
— The frequency-hopping orthogonal frequency-division multiplexing (OFDM) proposal, known as Multiband OFDM, is a strong contender for the physical layer IEEE standard for high-rate wireless personal area networks (WPANs) based on ultra-wideband (UWB) transmission. In this paper, we analyze the performance of the Multiband OFDM proposal. To this end, we (a)(More)
— This paper presents an analysis of the performance of the Multiband Orthogonal Frequency Division Multiplexing (MB-OFDM) system for Ultra Wideband (UWB) communication in the presence of interference from IEEE 802.16 WiMAX systems operating in the 3.5 GHz band. We present an exact analysis of the uncoded bit error rate (BER) of the MB-OFDM system, based on(More)
Introduction Ultra Wideband (UWB) Radio One of the strongest contenders for future high-rate, short range wireless communications Recently, first technical standards for UWB radio systems created ECMA-368 standard currently receives strong support from industry Protect existing licensed wireless services from excessive interference Limits permitted radiated(More)