7,382 research outputs found

    Average Error Probability Analysis in mmWave Cellular Networks

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    In this paper, a mathematical framework for the analysis of average symbol error probability (ASEP) in millimeter wave (mmWave) cellular networks with Poisson Point Process (PPP) distributed base stations (BSs) is developed using tools from stochastic geometry. The distinguishing features of mmWave communications such as directional beamforming and having different path loss laws for line-of-sight (LOS) and non-line-of-sight (NLOS) links are incorporated in the average error probability analysis. First, average pairwise error probability (APEP) expression is obtained by averaging pairwise error probability (PEP) over fading and random shortest distance from mobile user (MU) to its serving BS. Subsequently, average symbol error probability is approximated from APEP using the nearest neighbor (NN) approximation. ASEP is analyzed for different antenna gains and base station densities. Finally, the effect of beamforming alignment errors on ASEP is investigated to get insight on more realistic cases.Comment: Presented at IEEE VTC2015-Fal

    Uplink Performance Analysis in D2D-Enabled mmWave Cellular Networks

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    In this paper, we provide an analytical framework to analyze the uplink performance of device-to-device (D2D)-enabled millimeter wave (mmWave) cellular networks. Signal-to- interference-plus-noise ratio (SINR) outage probabilities are derived for both cellular and D2D links using tools from stochastic geometry. The distinguishing features of mmWave communications such as directional beamforming and having different path loss laws for line-of-sight (LOS) and non-line-of-sight (NLOS) links are incorporated into the outage analysis by employing a flexible mode selection scheme and Nakagami fading. Also, the effect of beamforming alignment errors on the outage probability is investigated to get insight on the performance in practical scenarios.Comment: arXiv admin note: text overlap with arXiv:1510.05961, arXiv:1608.0179

    Convergence Across Provinces of Turkey : A Spatial Analysis

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    The aim of this study is to analyze regional disparities and to test the convergence hypothesis across the provinces in Turkey. The study also attempts to analyze the spatial spillovers in the growth process of the provinces. The analyses cover the 1987-2001 period. Two alternative methodologies are used in the analyses. First, the methodology of b-convergence based on cross-sectional regressions is used and the effects of spatial dependence are analyzed by using spatial econometric techniques. Second, Markov chain analysis is employed and spatial dependence is integrated using spatial Markov chains. Results from both methodologies signal non-existence of convergence and the existence of spatial spillovers in the growth process of provinces.Regional Disparities, b-convergence, Markov Chains, Spatial Econometrics.

    Regional Variation In New Firm Formation In Turkey: Cross-Section And Panel Data Evidence

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    Since the 1980s the promotion of the formation of new firms has been considered as one of the main policies in dealing with the problem of uneven regional economic development in many countries. The determination of regional characteristics that are influential on new firm formation is quite a bit essential to develop realistic and efficient policies to solve this problem. Turkey is one of the countries with a substantial variation in new firm formation across her regions which are also significantly diversified in terms of social and economic structures. In this context, the present study explores the variation in new firm formation in manufacturing sector across regions of Turkey and investigates the effects of regional characteristics on new firm formation. Furthermore, the study provides a comparison of the differences in regional variation in underlying firm birth processes between developed countries and Turkey as a representative of a developing country.Turkey, firm formation, regional dynamics

    Use of media as an indicator of modern trend of female Pakistani dakwah groups

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    This study looked into the organized use of modern media technology by female Dakwah (Islamic propagation) groups in Pakistan as an indicator of modern trends prevalent among such groups. The two groups selected for this study were the Women’s Wing Jamaa’at e Islami and Al-Huda International Welfare Foundation. The time period of data is from June 2012 to December 2013. As a predominantly inductive research, this study shows that the ideological ground prepared by Women’s Wing Jama’at-e-Islami in Pakistani Muslim women was utilized by Al-Huda with a selective approach and a progressive use of modern media. It argues that a proactive discourse on status of women in Islam and female religious scholarship can be anticipated by such groups for being independent and pluralist. The study suggests a synergizing of likeminded groups towards women’s empowerment under the rubrics of Islam
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