A lone pilot assisted CDMA system is capable of separating the interference components included in a received input by solving a simultaneous equation. This real performance, however, depends on the property of the lone pilot response matrix which is given by the user spreading sequences and the multipath conditions. Consequently, it does not work well whenever the matrix has a wrong property. ...

In this paper, we compare the performance between channel estimation based on compressed sensing (CS) and time-domain least square (LS) for single-carrier (SC) communication system. Unlike the conventional channel estimation techniques such as frequency domain LS which is used in the condition that the length of pilot sequence is equal to data sequence, the estimation scheme based on CS require...

In this paper, we propose pilot-assisted decision feedback channel estimation (PA-DFCE) for space-time coded transmit diversity (STTD) in orthogonal frequency division multiplexing (OFDM). Two transmit channels are simultaneously estimated by transmitting the STTD encoded pilot. To improve the tracking ability of the channel estimation against fast fading, decision feedback is also used in addi...

Ward and Kennedy (1999) have introduced a modified version of the Sociocultural Adaptation Scale (SCAS) by Searle and Ward (1990). This scale has been designed towards measuring behavioral and cognitive components of cross-cultural adjustment among various groups of sojourners and international travellers. Ward and Kennedy (1999) based their psychometric analysis on a total of 16 crosssectional...

In this article, we address the challenges regarding the provision of channel state information as well as reducing peak-to-average power ratio (PAPR) of a multiple input multiple output orthogonal frequency multiplexing (MIMO–OFDM) system. The mean squared error (MSE) of the channel estimate is adopted as the optimization criterion to design pilot symbols for channel estimation in MIMO–OFDM sy...

background: simulation can be used for educating, evaluating and assessing psychometric properties of an instrument. the aim of this study was to contextualize and assess the validity and reliability of the interprofessional collaborative assessment tool (icar) in an iranian context using simulation.   methods: in this descriptive study, contextualization of the icar was assessed through severa...

Study of polar codes in fading channels is of great importance when applying polar codes in wireless communications. Channel estimation is a fundamental step for communication to be possible in fading channels. For both systematic and non-systematic polar codes, construction of them is based on an information set and the known frozen bits. Efficient implementation of systematic and non-systemat...

Background: Simulation can be used for educating, evaluating and assessing psychometric properties of an instrument. The aim of this study was to contextualize and assess the validity and reliability of the Interprofessional Collaborative Assessment tool (ICAR) in an Iranian context using simulation.   Methods: In this descriptive study, contextualization of the ICAR was assessed throug...

Simulation research on three DAG-TM CEs— CE 5: En Route Free Maneuvering, CE 6: En Route Trajectory Negotiation, and CE 11: Terminal Arrival Self-Spacing—began in 2001 at the NASA Ames, Glenn, and Langley Research Centers [3-5]. It will continue through 2004, with regular simulation evaluations of the developing concepts, tools and procedures. Related prior research is presented in [59]. This p...

The healthcare system has an inconsistent record of ensuring patient safety. One of the main factors contributing to this poor record is inadequate interdisciplinary team behavior. This article describes in situ simulation and its 4 components--briefing, simulation, debriefing, and follow-up-as an effective interdisciplinary team training strategy to improve perinatal safety. The purpose of thi...