The industry uses the word eScience to illustrate that in most parts of science everything is done with computers. In chemistry, computer simulations and all the multitude of software applications has reduced the need for many experiments. This is good in a world of diminishing resources. But one application is slow to get a foothold in academia, it is the electronic lab journal. This is very u...

E-government is emerging as the new way of coordinating relationships with business and citizens as the result of technological developments As such it requires the cooperation between many government organizations, the redesign of business processes, functions and responsibilities and the identification of opportunities enabled by information and communication technology. New government concep...

Trauma is a leading cause of morbidity and mortality in infants and children worldwide. Trauma education is one of the most commonly reported deficiencies in pediatric emergency medicine (PEM) training. In this study, we describe the creation of a pediatric trauma boot camp in which trainees' basic knowledge, level of confidence, teamwork, and communication skills are assessed. The primary goal...

We propose combining supervised and unsupervised algorithms in order to improve the performance ofmultiple-inputmultipleoutputdigital communication systemswhichmakeuseofdecision-feedback equalizers at the receiver. The basic idea is to avoid the periodical transmission of pilot symbols by using a simple criterion to determine the time instantswhen the performance obtained with an unsupervised a...

In this paper, a new pilot structure for LTE downlink system in SISO and MIMO cases is introduced in order to improve the channel estimation performances. The downlink reference signal structure in LTE is important for channel estimation. Pre-defined resource elements in the time and frequency domain are carrying the cell-specific reference signal sequence. However, those standard pilot scatter...

Abstract: A pilot sequence design for MIMO-OFDM systems is investigated where all transmit antennas share the same sub-carriers to convey pilot symbols. The pilot sequences are endowed with phase-shifting properties, granting the receiver the possibility of extracting the impulse responses for all channels directly from the antennas’ time-domain received signals, without co-channel interference...

In this paper, a novel single pilot array shape calibration algorithm is proposed for an arbitrary planar array. The method requires a single multi-carrier pilot operating at a known location with respect to the arbitrary array reference point. Typically two (minimum) or more sources are required to calibrate the shape of a planar array. However, by exploiting the difference in the array respon...

Pilot-assisted channel estimation has been studied only in common cooperative AF (Amplify-and-Forward) OFDM which has no feedback mechanism. In this paper, for cooperative AF-OFDM system, we propose a feedback technique in which the pilot allocation mechanism is adapted to the cooperative mobile channel. Then we show how uniform pilots may no longer be optimal compared with our pilots. After de...

In this paper, we propose the low-rank pilot-symbolaided (PSA) channel estimator for multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems. The group-wise pilot patterns are also proposed for the low-rank channel estimator. We evaluate the performance of the proposed low-rank channel estimator for various mobile channel environments by computer simulation...

To ensure the operation safety of landing signal officer (LSO) to pilot during carrierbased aircraft landing, the paper proposed a “LSO-pilot-aircraft” instruction associated with operation system. LSO guide mission, and design instruction associated with operation element is been analysed. The relationship and matching of “LSO-pilotaircraft” system are exhibited by instruction associated with ...