HSDPA Research Papers - Academia.edu (original) (raw)

Perkembangan teknologi mobile broadband saat ini mengalami kemajuan yang pesat sesuai dengan kebutuhan manusia akan informasi. Teknologi High Speed Downlink Packet Access (HSDPA) yang merupakan perkembangan dari teknologi WCDMA merupakan... more

Perkembangan teknologi mobile broadband saat ini mengalami kemajuan yang pesat sesuai dengan
kebutuhan manusia akan informasi. Teknologi High Speed Downlink Packet Access (HSDPA) yang merupakan
perkembangan dari teknologi WCDMA merupakan alternatif untuk layanan internet kecepatan tinggi sampai
dengan 7,2 Mbps. Dengan berkembangnya jumlah pelanggan maka kualitas jaringan harus selalu ditingkatkan
baik jaringan luar ruangan atau dalam ruangan. Untuk mengetahui kualitas suatu jaringan seluler dapat
menggunakan metode drive test dengan melihat parameter-parameter nilai sinyal Received Signal Code Power
(RSCP), Energy Chips per Noise (Ec/No). Untuk mengetahui kualitas layanan data maka dapat dilihat dari nilai
troughput kecepatan maksimum dari hasil upload dan download. Hasil penelitian dan pengukuran menunjukan
nilai sinyal yang diperoleh untuk operator Telkomsel dan Axis nilai terbaik untuk RSCP ≥ -92 dBm yaitu dapat
mencapai target yaitu sebanyak lebih hari 80% , dan untuk Ec/No ≥ -9 dBm belum mencapai target 80%,
sedangkan untuk nilai troughput maksimal operator telkomsel dan Axis dapat mencapai target 1,9 dan 1,7
Mbps untuk download dan untuk upload operator telkomsel dan Axis sebesar 407 dan 403 kbps.

Mobile operators commonly use macro cells with traditional wide beam antennas for wider coverage in the cell, but future capacity demands cannot be achieved by using them only. It is required to achieve maximum practical capacity from... more

Mobile operators commonly use macro cells with traditional wide beam antennas for wider coverage in the cell, but future capacity demands cannot be achieved by using them only. It is required to achieve maximum practical capacity from macro cells by employing higher order sectorization and by utilizing all possible antenna solutions including smart antennas. This paper presents enhanced tessellation for 6-sector sites and proposes novel layout for 12-sector sites. The main target of this paper is to compare the performance of conventional wide beam antenna, switched beam smart antenna, adaptive beam antenna and different network layouts in terms of offering better received signal quality and user throughput. Splitting macro cell into smaller micro or pico cells can improve the capacity of network, but this paper highlights the importance of higher order sectorization and advance antenna techniques to attain high Signal to Interference plus Noise Ratio (SINR), along with improved network capacity. Monte Carlo simulations at system level were done for Dual Cell High Speed Downlink Packet Access (DC-HSDPA) technology with multiple (five) users per Transmission Time Interval (TTI) at different Intersite Distance (ISD). The obtained results validate and estimate the gain of using smart antennas and higher order sectorization with proposed network layout.

esto es un breve con tenido asi la hrientacion d los drefchos fe domilicilio

Pengaturan hak asasi manusia maupun hak dan kewajiban warga negara secara lebih operasional ke dalam berbagai peraturan perundang-undangan sangat bermanfaat. Pengaturan itu akan menjadi acuan bagi penyelenggara negara agar terhindar dari... more

Pengaturan hak asasi manusia maupun hak dan kewajiban warga negara secara lebih operasional ke dalam berbagai peraturan perundang-undangan sangat bermanfaat. Pengaturan itu akan menjadi acuan bagi penyelenggara negara agar terhindar dari tindakan sewenang-wenang tatkala mengoptimalisasikan tugas kenegaraan. Sedangkan bagi masyarakat atau warga negara hal itu merupakan pegangan atau pedoman dalam mengaktualisasikan hak-haknya dengan penuh rasa tanggung jawab. Dengan kejelasan substansi tersebut dapat memotivasi warga untuk memahaminya lebih mendalam serta memberdayakan hak dan kewajibannya dalam konteks pelaksanaan otonomi dan semangat demokratisasi di daerah.

Health Psychology: The main cause of human disease is a psychological, if we exclude the genetic and partly, infectious diseases ... Rather, the cause is a violation of the process of psychological adaptation to the psycho-physiological,... more

Health Psychology: The main cause of human disease
is a psychological, if we exclude the genetic and partly, infectious diseases ... Rather, the cause is a violation of the process of psychological adaptation to the psycho-physiological, psychological, socio-psychological, psychological and moral (honesty, conscience) and psycho-spiritual (justice ...) levels. As with the development of information and communication technologies role PSI Factor increases in individual life and in society ... (modern civilization))), the foundation of which is the virtual or in other words, the PSI-Reality - Subjective Reality the subject of one of the five measurement psi reality: consciousness, activity (behavior), values ​​(meanings and values), communication, feeling ... at four levels of human organization: the physical, biological, psychological and socio-cultural ..., which are presented in the method:
"The development of a conscious behavior of resources"
Abstract: The theoretical basis of the method of diagnosis of the state of consciousness and modifying irrational systems of consciousness is the rational-emotive therapy (RET) advanced A.Ellisom, relations V.N.Myasischeva personality theory, which considered identity as a set of different relations and the theory of socio-psycho ...
read more - https://www.facebook.com/notes/vladimir-natarov/10204964621467759
See More
CANCER - psychosomatic diseases? | psy-practice.com
However, scientists are increasingly talking about the psychological factor as one of the causes of cancer. It turns out that one of the reasons or if ...
psy-practice.com

To launch a cellular network, prelaunch capacity dimensioning is performed which includes coverage estimation and throughput prediction. Cellular companies in developing countries like Pakistan are only providing 2G services, while 3G... more

To launch a cellular network, prelaunch capacity dimensioning is performed which includes coverage estimation and throughput prediction. Cellular companies in developing countries like Pakistan are only providing 2G services, while 3G services are yet to be launched. Although a lot of research has been done on 3G services in developed countries but there is very little knowledge regarding practical aspects of planning and optimization of 3G networks in third world countries like Pakistan. This research paper includes a thorough analysis of factors that affect capacity of 3G networks, including radio propagation models. Various propagation models are studied and propagation constants of Standard Propagation Model are tuned according to topography of Islamabad. The performance analysis of these propagation models is done using Matlab and results are verified through planning tool Atoll and field measurements. Based on analysis of these results capacity dimensioning, in terms of number...

Scheduling through wireless shared channels is a very challenging problem because of each user?s link-state variations through time. The challenge lies in the support of the quality of service (QoS) of each user under the uncertainty of... more

Scheduling through wireless shared channels is a very challenging problem because of each user?s link-state variations through time. The challenge lies in the support of the quality of service (QoS) of each user under the uncertainty of channel behavior. This problem becomes even more difficult for some of the 2.5G and 3.5G network architectures (e.g EDGE,HSDPA, HDR) where the supported transmission rate can take multiple values and the channel can not be modeled by the traditional ON-OFF model. In this paper we propose Expo-pred-wei, a new scheduling algorithm, which take advantage of the channel variations in order to maximize the total cell throughput and at the same time to preserve, in an efficient way, a minimum QoS for each user. In contrast to other proposed algorithms, our algorithm exhibits very good performance in a wide set of traffic scenarios including Real-Time (RT) or Non-Real-Time (NRT) traffic as well as mixed RT and NRT traffic.

In beyond 3G systems, one of the important factors is to address radio access technology (RAT) selection and load balancing between heterogeneous networks to ensure high spectral efficiency in an era where spectral resources are at a... more

In beyond 3G systems, one of the important factors is to address radio access technology (RAT) selection and load balancing between heterogeneous networks to ensure high spectral efficiency in an era where spectral resources are at a premium. This work aims to address the feasibility of utilizing WiFi as complementary service for HSDPA, to prevent quality of service deterioration in the event of network overload in HSDPA during the busy period. The proposed RAT selection algorithm is based on the load of each system, and the results show that the outage probability can be improved by up to 45% relative to a stand-alone HSDPA system.

Learning Management System (LMS) merupakan suatu aplikasi e-learning yang didesain untuk dapat melakukan proses delivery, tracking, reporting dan managing terhadap isi materi (content) e-learning (electronic learning). E-learning... more

Learning Management System (LMS) merupakan suatu aplikasi e-learning yang didesain untuk dapat melakukan proses delivery, tracking, reporting dan managing terhadap isi materi (content) e-learning (electronic learning). E-learning diharapkan dapat menghubungkan sistem pembelajaran antar institusi pendidikan. Agar setiap LMS mempunyai content yang sama, perlu dilakukan sistem sinkronisasi. Sinkronisasi berfungsi untuk memperbaharui (update) content antar LMS. Karena institusi pendidikan di indonesia tersebar di setiap daerah, mengakibatkan munculnya permasalahan jarak antar institusi pendidikan. Untuk mengatasi jarak tersebut, teknologi LMS bisa di integrasikan dengan menggunakan jaringan GPRS dan HSDPA. Parameter jaringan yang digunakan dalam implementasi ini adalah throughput, packet loss, dan lama waktu sinkronisasi. Dari hasil implementasi didapatkan bahwa sinkronisasi dengan menggunakan jaringan HSDPA lebih baik dibandingkan dengan mengunakan jaringan GPRS. Dari hasil sinkronisas...

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