UFMC and f-OFDM: Contender Waveforms of 5G Wireless Communication System

Because of the increased demand for high data rates, looking for using new technologies that meet these requirements are considered a necessary. Hence, Fifth Generation (5G) is expected to be impressive in offering these requirements and implement around 2020. Orthogonal Frequency Division Multiplexing (OFDM) is considered a main technology of LTE wireless communication standards. Due to its suffering from high Bit Error Rate (BER) and Peak Average Power Ratio (PAPR), OFDM doesn't consider as charming solution for future wireless communications and several emerging applications of 5G. Moreover, high Out of Band Emission (OOBE) and inability of supporting the flexible numerology are other demerits of OFDM systems. Thus, looking for alternative waveforms which have the ability of solving OFDM disadvantages are necessary to introduce it as contender candidate for 5G wireless communication systems. In this paper, both of Filtered-OFDM (f-OFDM) and Universal Filtered Multi carrier (UFMC) systems have been discussed for 5G wireless communication systems and compared to OFDM system. The results showed that f-OFDM system is better than both OFDM and UFMC systems and could be introducing as competitive candidate for 5G wireless communication systems because of its ability of reducing OOBE and enhancing BER performance

Downlink LTE System Performance Improvement by Using BCH Codes over LTE-MIMO Channel

Long-term Evolution (LTE) has potential feasibility to implement high-speed data transmission. This technology is essential for accommodating the rising utilization of data and voice service. Nonetheless, the main problem is the deteriorated performance of wireless communication systems following the elevation in bit error rate (BER) owing to multipath fading environments. Therefore, using channel coding is essential to reduce BER, which leads to enhancement of system performance of digital communication systems. Previous studies have reported utilization of channel codes including turbo and convolutional codes in LTE systems for attaining error control system. As such, the key challenge of selecting category of coding method is the trade-off between elevating decoding complexity and enhancing system performance. Hence, the study herein proposed Bose and Chaudhuri (BCH) codes as channel coding for downlink LTE system over MIMO channel. This is aimed to attain an adaptive error control with low complexity compared to turbo and convolutional codes. The findings indicated that BCH codes had reduced BER compared to turbo and convolutional codes in both quadrature phase-shift keying (QPSK) modulation schemes and binary phase-shift keying (BPSK) with regard to the downlink LTE system performance. The suggested method had approximately 4dB coding gain at 1X10-1 against both of convolutional and turbo codes in BPSK. While, for QPSK, the proposed method had approximately 5dB and 6dB compared to turbo and convolutional codes, respectively. Nonetheless, enhanced performance of the suggested system was observed through reducing BER of the received data by adding the number of antennas in MIMO channel

RS Codes for Downlink LTE System over LTE-MIMO Channel

Nowdays, different applications require a modern generation of mobile communication systems; long term evolution (LTE) is a candidate to achieve this purpose. One important challenge in wireless communications, including LTE systems, is the suitable techniques of controlling errors that degrade system performance in transmission systems over multipath fading channels. Different forward Error correction (FEC) techniqes are required to improve the robustness of transmission channels. In this paper, Reed-Solomon (RS) codes were used with a downlink LTE system over a LTE-MIMO channel. This research contributes by combining RS codes that have low decoding complexity (by using hard decision decoding) with a LTE-MIMO channel to improve downlink LTE system performance. The results show that using RS codes clearly improves LTE system performance and thus decreases Bit Error Rates (BER) more than convolutional and turbo codes which have high decoding complexity. Lastly, the results show also extra improvements of downlink LTE system performance by increasing the number of antennas of the LTE-MIMO channel

Kepemimpinan Kolektivistik

Kepemimpinan kolektivistik menunjuk pada suatu aliran kepemimpinan yang mengambil perspektif “kita” dalam kepemimpinan. Artikel ini mengkaji lima aliran kepemimpinan kolektif, yaitu kepemimpinan tim, kepemimpinan jaringan, kepemimpinan bersama, kepemimpinan rumit dan kepemimpinan kolektif. Hasil kajian menunjukkan masing-masing aliran memiliki kekuatan dan kelemahan, baik secara umum, dalam sain maupun dalam praktik, serta memiliki implikasi praktis. Artikel ini akan membantu pimpinan organisasi untuk mengenali konteks yang cocok dengan penerapan masing-masing pendekatan kepemimpinan kolektif

Bahasa Agama dalam Wacana Sosiologi Agama

A short study of the history of the sociology of religion is enough to show the importance of religion as a factor relevant to the study of variations, maintenance , language policy and planning are already equipped to work at least some of them are generally regarded as the founder of a branch of linguistics . However , these effects do not stop merely linguistic region but also on the dimensions of the broader culture . Claiming Arabic is the only language of Islam becomes simpler if it is associated with the contestation countries that historically have been quite dominant in the development of Islam . As a sociological study of religion , it has become wide open land research to continue to be observed in the level of practice speaking societies where Islam is the majority religio

Efek Interaksi Kepemimpinan Otentik ─ Kepercayaan Pada Pimpinan Organisasi Terhadap Kepuasan Kerja Tenaga Pendidikan Dan Kependidikan STAI At-Tahdzib Jombang

This study examines employee job satisfaction through authentic leadership practices, organizational-trust in leader and interaction between the two. The study was conducted at the STAI At-Tahdzib Jombang and took 23 educator and adminsitration staff randomly as sample of the study. The data were analyzed by simple regression analysis, multiple regression analysis and moderate regression analysis. The analysis shows authentic leadership has a positive effect on job satisfaction. The positive influence of authentic leadership on job satisfaction is lost when multiple and interacts with organizational-trust in leader. Organizational-trust in leader has a positive effect on job satisfaction. The positive effect of organizational-trust in leader on job satisfaction does not disappear when multiple and interacts with authentic leadership. Organizational-trust in leader has no effect of strengthening or weakening the influence of authentic leadership on job satisfaction. The interaction between authentic leadership and trust in organizational leadership has no effect on job satisfaction.Penelitian ini mengkaji kepuasan kerja melalui praktik kepemimpinan otentik, kepercayaan pada pimpinan organisasi dan interaksi antara keduanya. Penelitian dilaksanakan di STAI At-Tahdzib Jombang dan mengambil 23 tenaga pendidikan dan kependidikan secara random sebagai sampel penelitian. Data-data dianalisis dengan analisis regresi sederhana, analisis regresi ganda dan analisis regresi moderat. Hasil analisis menunjukan kepemimpinan otentik berpengaruh positif pada kepuasan kerja. Pengaruh positif kepemimpinan otentik pada kepuasan kerja menjadi hilang ketika berganda dan berinteraksi dengan kepercayaan pada pimpinan organisasi. Kepercayaan pada pimpinan organisasi berpengaruh positif pada kepuasan kerja. Pengaruh positif kepercayaan pada pimpinan organisasi pada kepuasan kerja tidak hilang ketika berganda dan berinteraksi dengan kepemimpinan otentik. Kepercayaan pada pimpinan organisasi tidak memiliki efek memperkuat atau memperlemah pengaruh kepemimpinan otentik pada kepuasan kerja. Interaksi antara kepemimpinan otentik dengan kepercayaan pada pimpinan organisasi tidak berefek pada kepuasan kerja

Politik Organisasi dalam Latar Sumber-Sumber Kekuasaan di Lingkungan Kerja

Research aim to enhancement of understanding of perception oforganizational politics from power sources perspective. Research subject are 51employees from various work organization. Perception of organizational politicsmeasured with researcher design scale. Power sources measured with standardizedscale. Data analyzed with multiple regression. Result of analysis shows: 1) F = 2,637and p = 0,046 (p < 0,05), legitimate power, reward power, expert power and referentpower simultaneously are in the same direction correlate with perception oforganizational politics with contribution of 18,7%; 2) Legitimate power B = – 0,340and p = 0,059 (p > 0,05) partially uncorrelated with perception of organizationalpolitics; 3) Reward power B = 1,601 and p = 0,046 (p < 0,05) shows that withcontrolling of legitimate, expert, and referent power, then correlation between rewardpower with perception of organizational politics significantly is in the same direction;4) Expert power B = – 0,649 and p = 0,277 (p > 0,05) partially uncorrelated withperception of organizational politics, and 5) Referent power B = – 1,304 and p =0,030 (p < 0,05) partially negative correlated with perception of organizationalpolitics.Keywords : organizational politics, legitimate power, reward power, expert powerreferent powe

Pengaruh Kepemimpinan Partisipatif Pada Kinerja Mahasiswa Magang: Peran Mediasi Kepercayaan Pada Organisasi

Research involving final-year students’ university internship on Islamic High School for three months. Students completing measure instruments that developed by researcher. Data covered used to test of direct and indirect effect of participative leadership toward task and contextual performance with mediation of affective and cognitive-trust in leader. Result of analysis shows participative leadership, affective and cognitive-trust in leader simultaneously has positive influence toward task and contextual performance. Participative leadership partially has positive influence on both task and contextual performance as well as on affective and cognitive-trust in leader. Affective-trust in leader partially has positive influence on task performance. Direct effect of participative leadership on task performance was bigger from indirect effect by affective-trust in leader, and total effect was bigger from direct effect. Influence of participative leadership on task performance unmediated by affective-trust in leader. Because contextual performance uninfluenced by affective-trust in leader, so affective-trust unmediated for influence of participative leadership on contextual performance. Because no influence of cognitive-trust on task and contextual performance, so cognitive-trust unmediated for influence of participative leadership, both on task or contextual performance. Research finding would discuss in students internship context