OFDM based 802.16.3 PHY Proposal

Restructuring Wireless Systems using PHY Layer Information

High transmission rate and secure communication have been identified as the key targets that need to be effectively addressed by fifth generation (5G) wireless systems. In this context, the concept of physical-layer security becomes attractive, as it can establish perfect security using only the characteristics of wireless medium. Nonetheless, to further increase the spectral efficiency, an eme...

In previous time-resolved microarray-based expression profiling, we identified 32 genes encoding putative transcription factors, signaling components, and unknown proteins that are rapidly and robustly induced by phytochrome (phy)-mediated light signals. Postulating that they are the most likely to be direct targets of phy signaling and to function in the primary phy regulatory circuitry, we ex...

The aim of this study was to evaluate the effects of the stimulation of central cholinergic synapses in the regulation of heat loss in untrained rats during exercise. The animals were separated into two groups (exercise or rest) and tail skin temperature (T(tail)), core temperature and blood pressure were measured after injection of 2 microL of 5x10(-3) M physostigmine (Phy; n = 8) or 0.15 M Na...

Most existing works on physical-layer (PHY) cooperation (beyond routing) focus on how to best use a given, static relay network–while wireless networks are anything but static. In this paper, we pose a different set of questions: given that we have multiple devices within range, which relay(s) do we use for PHY cooperation, to maintain a consistent target performance? How can we efficiently ada...

BACKGROUND The purpose of the present paper was to investigate differing characteristics of Munchausen syndrome by proxy (MSBP) between subjects with predominantly physical symptoms and those with predominantly psychological symptoms. METHODS A questionnaire survey was sent to 11 leading doctors in the child abuse field in Japan, each located in different hospital-based sites. Child abuse doc...

This paper presents an architecture to support dynamic spectrum access (DSA) in general wireless networks. Our architecture advocates a new spectrum virtualization layer (SVL), directly below the wireless physical layer (PHY or baseband processing). We call it Layer 0.5. SVL presents a virtual baseband to traditional wireless PHY, which is designed for a fixed contiguous spectrum band with fixe...

This paper proposes a novel framework for the cross-layer design and optimization of wireless networks combining adaptive modulation and coding (AMC) at the physical (PHY) layer with automatic repeat request and channel-aware multiuser scheduling protocols at the data link control (DLC) layer. The proposed framework is based on the use of first-order two-dimensional discrete timeMarkov chains (...

BACKGROUND Mannanase is an enzyme that can catalyze random hydrolysis of beta-1,4-mannosidic linkages in the main chain of mannans, glucomannans and galactomannans which are the key polymers in hemicellulose. It has been used in a number of different industrial applications including food, feed, pharmaceutical, pulp/paper industries, and second generation biofuel. To optimize the expression sys...