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We investigate spatial interference statistics for multigigabit outdoor mesh networks operating in the unlicensed 60-GHz "millimeter (mm) wave" band. The links in such networks are highly directional: Because of the small carrier wavelength (an order of magnitude smaller than those for existing cellular and wireless local area networks), narrow beams are(More)
We present a cross-layer modeling and design approach for multiGigabit indoor wireless personal area networks (WPANs) utilizing the unlicensed millimeter (mm) wave spectrum in the 60 GHz band. Our approach accounts for the following two characteristics that sharply distinguish mm wave networking from that at lower carrier frequencies. First, mm wave links(More)
We investigate an architecture for multi-Gigabit outdoor mesh networks operating in the unlicensed 60 GHz “millimeter (mm) wave” band. In this band, the use of narrow beams is essential for attaining the required link ranges in order to overcome the higher path loss at mm wave carrier frequencies. However, highly directional links make standard MAC methods(More)
Throughput performance of multihop wireless networks is governed by how the network's transport capacity (in bit-meters per second) is partitioned among different network flows. Max-min fair allocation leads to poor throughput performance for all flows because connections traversing a large number of hops consume a disproportionate share of resources. While(More)
The 7 GHz of unlicensed spectrum in the 60 GHz band offers the potential for multiGigabit indoor wireless personal area networking (WPAN). With recent advances in the speed of silicon (CMOS and SiGe) processes, low-cost transceiver realizations in this "millimeter (mm) wave" band are within reach. However, mm wave communication links are more fragile than(More)
Multi-gigabit outdoor mesh networks operating in the unlicensed 60 GHz “millimeter (mm) wave” band, offer the possibility of a quickly deployable broadband extension of the Internet. We consider mesh nodes with electronically steerable antenna arrays, with both the transmitter and receiver synthesizing narrow beams that compensate for the higher path loss(More)
We propose a novel approach to QoS for real-time traffic over wireless mesh networks, in which application layer characteristics are exploited or shaped in the design of medium access control. Specifically, we consider the problem of efficiently supporting a mix of Voice over IP (VoIP) and delay-insensitive traffic, assuming a narrowband physical layer with(More)
OBJECTIVES To investigate the association of (i) seven SNPs and SNP haplotypes in the phase II conjugating enzyme N-acetyl transferase 2 gene; and (ii) slow acetylator phenotype, with the development of young onset (YO) and late onset (LO) Parkinson's disease (PD) among Indians. METHODS A total of 267 cases (132 YOPD, age at onset < or =40 years; 135(More)
Open Spectrum systems offer an attractive solution to the reuse of under-utilized licensed spectrum. Existing proposals take a reactive sense-and-avoid approach to impulsively reconfigure spectrum usage without any knowledge of future dynamics. We propose a proactive spectrum access approach where secondary users utilize past observations to build(More)
OBJECTIVES Sleep related complaints and rapid eye movement (REM) behavior disorder (RBD) are commonly reported in patients with Parkinson's disease (PD). The study aimed to compare the characteristics of patients with PD with RBD versus those without RBD. METHODS Consecutive patients with PD were evaluated with detailed clinical history, examination and(More)