The ever increasing demand for higher mobile data rates continues to rise challenges for researchers and developers. As the the available spectral resources remain essentially the same, the key to higher data rates lies in improving spectral efficiency. Multiantenna techniques are one of the most important technologies to enhance spectral efficiency, enabling the transmission of multiple spatia...

We present non-LTE corrections to abundances of Fe, O, Na, and Mg derived from LTE analyses of F-K stars over a broad range of gravities and metal abundances; they were obtained using statistical equilibrium calculations and new model atoms. Line opacity was considered by means of an empirical procedure where it was attributed to a veil of weak Fe I lines; in the case of solar-type dwarfs, resu...

BACKGROUND AND PURPOSE Hemicraniectomy has been shown to be an effective treatment of life-threatening edema (LTE) in malignant middle cerebral artery infarction when performed early. Identifying patients who will develop LTE is therefore imperative. We hypothesize that autonomic shift toward sympathetic dominance may relate to LTE formation. We aimed to investigate the predictive potential of ...

Machine-to-Machine (M2M) communication refers to autonomous among devices that aims for a massive number of connected devices. M2M can support ubiquitous and full mechanical automation, it will change everything from industry ourselves. Recent developments in technology make Long Term Evolution (LTE)/Long Evolution-Advance (LTE-A) promising supporting communication. LTE the diverse characterist...

This paper gives the brief introduction to key features of TD-SCDMA and TD-LTE (TDD Long Term Evolution). For the TD-SCDMA system, key technologies such as joint detection, smart antenna and synchronization are described and analyzed. For the TD-LTE system, important technologies such as OFDM, MIMO, uplink timing control, inter-cell interference coordination are applied. It is shown that the TD...

IEEE 802.16 Worldwide Interoperability for Microwave Access (WiMAX) is an emerging broadband wireless communication standard used as a model of transmission and high speed Internet access. 3G Long Term Evolution (LTE) is the leading standard for wireless communication of high-speed data for mobile users. In this report we compare the performance of voice and video applications over WiMAX and LT...

This research report explores the recent 3GPP LTE D2D rel. 14 Radio Resource Management specification to identify the challenges and evaluate the potentials of Unsupervised LTE D2D (mode 2) for Safety-critical V2X Communications. It also proposes two distributed resource allocation strategies for unlicensed band access. Complementary to DSRC/ITS-G5, Unsupervised LTE D2D is an opportunity to pro...