19,696 research outputs found
EXIT Chart-Aided Convergence Analysis of Recursive Soft m-Sequence Initial Acquisition in Nakagami-m Fading Channels
No full textThis is the dataset of the accepted paper (January, 2018): Abbas Ahmed, Panagiotis Botsinis, SeungHwan Won, Lie-Liang Yang and Lajos Hanzo, "EXIT Chart-Aided Convergence Analysis of Recursive Soft m-Sequence Initial Acquisition in Nakagami-m Fading Channels" IEEE Transactions on Vehicular Technology.
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Deregulation and efficiency: the case of private Korean banks
No full textThis paper examines the productive efficiency of a sample of private Korean banks over the 1985 to 1995 time period. The goal of the analysis is to identify the key determinants of Korean bank efficiency (inefficiency) following the program of deregulation initiated by the government in the early 1980s and augmented in the early 1990s. Using the stochastic frontier cost function approach, efficiency scores were determined for each bank in the sample. A second stage efficiency regression was then estimated to identify the key determinants of operating efficiency. In general, the results show that banks with higher rates of asset growth, fewer employees per million won of assets, larger amounts of core deposits, and lower expense ratios were more efficient. In addition, banks which branched nationwide were found to be more efficient. The financial deregulation of 1991 was found to have had little or no significant effect on the level of sample bank efficiency.Banks and banking - Korea ; Korea
Differential Coherent Code Acquisition in the Multiple Transmit/Receive Antenna Aided DS-CDMA Downlink
No full textIn this contribution we investigate both differentially coherent and noncoherent code acquisition schemes in the multiple transmit/receive antenna aided DS-CDMA downlink, when communicating over uncorrelated Rayleigh channels. It is demonstrated that in contrast to our expectations, the achievable Mean Acquisition Time (MAT) degrades at low Ec/Io values, as the number of transmit antennas is increased in both differentially coherent and noncoherent code acquisition system scenarios, even though the degree of performance degradation depends upon the specific scheme considered. Ironically, our findings suggest that increasing the number of transmit antennas in a MIMO-aided CDMA system results in combining the low-energy, noise-contaminated signals of the transmit antennas, which ultimately increases the MAT by an order of magnitude, when the SINR is relatively low. Therefore our future research will be aimed at specifically designing acquisition schemes for MIMO systems
THE PECULIARITY OF THE COMPOSITION AND ARTISTIC SPEECH OF PROSE OF YANG WON SIK
No full textThe prosaic works of Yang Won Sik (1932–2006), a representative of Korean
literature in Kazakhstan, are considered for the first time. After the Korean War, the
DPRK leadership sent talented youth to Moscow to get an education. The New Republic
needed qualified specialists to build a new state. Yang Won Sik graduates from VGIK in
1958 and stays in the USSR. He devoted many years to the life of the Kazakhfilm Studio
and the republican newspaper Kore Ilbo. Yang Won Sik was a member of the Union of
Writers of the USSR (1990) and Kazakhstan, a member of the Union of Cinematographers
of the USSR, a member of the international PEN Club. The prose by Yang Won
Sik written in a dialect of the province of Hamken conveys the historical “time — space”
through the system of images and, in particular, verbal images. The author introduces
the reader to the panorama of events of the beginning of the last century to the
present. In his works of the 1950s and 1980s, Yang Won Sik uses Koryo mar in artistic
speech. In the stories describing the events of the early twentieth century, the language
of the Far Eastern Koreans is different. Each historical period creates its own words that
disappear with the era
Initial and Post-Initial Code Acquisition in the Non-Coherent Multiple Input/Multiple Output Aided DS-CDMA Downlink
No full textIn this paper, we investigate the issues of both initial and post-initial acquisition schemes in the multiple-input/multiple-output (MIMO)-aided direct-sequence code-division multiple-access (DS-CDMA) downlink when communicating over spatially uncorrelated Rayleigh channels. The associated mean acquisition time (MAT) performance trends are characterized as a function of the number of MIMO elements. Furthermore, we characterize both the initial and post-initial acquisition performance as a function of the relevant system parameters. Our findings suggest that increasing the number of transmit antennas in a MIMO-aided CDMA system results in combining the low-energy noise-contaminated signals of the transmit antennas, which ultimately increases the MAT by an order of magnitude when the signal-to-interference-plus-noise ratio (SINR) is relatively low, regardless of whether single- or multipath scenarios are considered. This phenomenon has a detrimental effect on the performance of Rake-receiver-based synchronization schemes when the perfectly synchronized system is capable of attaining its target bit-error-rate performance at reduced SINR values, as a benefit of employing multiple transmit antennas. Based on our analysis justified by information-theoretic considerations, our acquisition design guidelines are applicable to diverse noncoherent (NC) MIMO-assisted scenarios
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