Radio frequency identification (RFID) enables everyday objects to be identified, tracked, and recorded. The RFID tags are must extremely simple of low cost suitable for large scale application. An efficient anti-collision mechanism have access latency power consumption. This paper investigates how recognize multiple within the reader's interrogation ranges without knowing number in advance by using framed ALOHA. To optimize consumption overall tag read time, a combinatory model was proposed...

Wireless communication networking technologies play an important role in supporting ubiquitous networks. Body area network (BAN) is a small-scale wireless network, which considered as potential technology to provide extremely high quality and convenience for people more direct manner. This paper foresees some aspects of BAN. Possible application areas usage models are overviewed. Some compared their suitability Moreover, prototype BAN was developed transmission three-dimensional accelerating...

Smart Grid (SG) is characterized by two-way flow of electricity and information capable monitoring everything from power plants customer preference to individual appliances. In this paper, we focus on applying 3GPP LTE release 8 technology build a high-reliable low-latency Distribution Automation (DA) network. Based the documents released Nation Institute Standard Technologies, communication requirements DA are obtained, which include traffic distributions, latency constraint reliability...

In this paper, an inertial two-neuron system with multiple delays is analyzed to exhibit the effect of time on dynamics. The parameter region equilibria obtained employing pitchfork bifurcation trivial equilibrium. stability analysis illustrates that two nontrivial are both stable for any delays. It implies neural exhibits a coexistence resting states. Further, due existence delays, has periodic activity around equilibrium via Hopf bifurcation. Finally, numerical simulations employed...

IEEE 802.15 established a new working group, wireless body area networks (WBAN), to develop short range technology in and around human recently. This paper investigates networking issues implant communications of WBAN. The object is better understanding medical sensor net

IEEE 802.15 working group established a new study group, body area network (SG-BAN), to develop short range wireless communication technology in and around human recently. Wearable healthcare is an important category of potential applications BAN. This paper introduces the SG-BAN investigates performance 802.15.4b 802.15.4a for wearable heterogeneous networks environment. The object better understanding requirement BAN how where works be started. In addition scalability issue, we found...

A FitzHugh–Nagumo (FHN) model with delayed coupling is considered. For a critical case when the corresponding characteristic equation has single zero root and pair of purely imaginary roots, complete bifurcation analysis presented by employing center manifold reduction normal form method. The Fold–Hopf diagrams are provided to illustrate correctness our theoretical analysis. Whether almost periodic motion bursting behavior occur in FHN neural system depends on time delay signal transmission...

On-body communication channels are of increasing interest as more and wireless devices wearable in medical, military, personal communications. This letter presents an experimental investigation into the dynamic on-body channel with body movements. Based on statistical analyses level crossing rate fading duration, a three-state Fritchman model that considers both dwelling time quality is proposed to describe burst characteristics fading. The classified unstable error-free state, constant...

Radio frequency identification (RFID) enables everyday objects to be identified, tracked, and recorded. Because of expense, size, lifetime requirements, some simple active RFID tags are designed with only a transmitter. The transmitter-only unaware each other simply blink ID packets periodically. question is how we can read the enough confidence. paper models access protocol as pure ALOHA develops mathematical analysis identify tag blinks within interrogation zone without prior knowledge...

Complementary WLAN and WPAN technologies as well other wireless will play a fundamental role in the medical environments to support ubiquitous healthcare delivery. This paper investigates clear channel assessment (CCA) its impact on coexistence of (IEEE 802.11 high rate direct sequence spread spectrum (HR/DSSS) PHY) 802.15.4b) 2.4 GHz industrial, scientific, (ISM) band. We derived closed-form expressions both energy-based CCA feature-based CCA. qualified unequal sensing abilities between...

Wireless body area network (WBAN) solution is an emerging technology to resolve the small connection issues around human body, especially for medical applications. Based on integrated superframe structure of IEEE 802.15.4, this paper proposes a modified medium access control (MAC) protocol WBAN with focus simplicity, dependability and power efficiency. Considering support multiple physical layer (PHY) technologies including ultra-wide band (UWB), slotted ALOHA employed in contention period...

The purpose of this paper is to identify situations in neural network modeling where current-based synapses are applicable. applicability synapse model for studying post-transient behavior networks discussed terms average synaptic current strength induced by per spike during one firing cycle a neuron (or briefly strength). It was found that models applicable both the interspike intervals neurons and distribution times uniform, all synchronized. If neither nor uniform or reversal potential...

The distance between two asynchronous impulse ultra-wideband (UWB) sensors can be obtained from round trip flying time through two-way ranging (TWR) transaction. clock difference causes error in the measurement account for order of 10 nanoseconds propagation delay. This paper presents a management UWB TWR responder estimates initiator by delay-locked-loop circuit during reception frame. When replying response, locks its frequency to estimated initiator. Consequently duration are measured...

Biomedical sensors can be implanted and networked in the human body for health monitor, diagnosis, treatment or as a prosthetic device. Life time heat generated by implant due to communication circuitry power consumption are big concerns. This paper presents new network architecture long range communications sensor networks. We measured on-body propagation around surface in-body through tissue frequency ranges of 403 MHz 2.45 GHz. have found that path loss is more than on-body. To exploit...

In this paper, we construct an inertial two-neuron system with a non-monotonic activation function. Theoretical analysis and numerical simulation are employed to illustrate the complex dynamics. It is found that neural exhibits mixed coexistence periodic orbits chaotic attractors. To end, equilibria their stability analyzed. The parameters divided into some regions different number of by static bifurcation curve. Then, employing simulations, including phase portraits, Lyapunov exponents,...