Hasil Pencarian  ::  Simpan CSV :: Kembali

Hasil Pencarian

Ditemukan 74440 dokumen yang sesuai dengan query
cover
Hanif Rachmadani
"Perkembangan yang cepat di bidang Biosensing telah membuka gerbang kepada peneliti untuk mengeksplorasi penggunaan sinyal biologis. Salah satu dari penggunaan sinyal ini adalah Human-Computer Interface (HCI), yang memungkinkan seseorang untuk berinteraksi dengan komputer tanpa kontak fisik. Agar sebuah perangkat HCI dapat berfungsi dengan efisien, sensor-sensor yang digunakan untuk mengakuisisi sinyal biologis harus nyaman digunakan dan mudah dibawa. Pada Tugas Akhir ini penulis mengajukan sebuah desain modifikasi untuk OpenBCI Cyton biosensing board, yang akan menggantikan modul RFDuino RFD22302 dengan modul Espresif ESP-32. Proses penelitian meliputi modifikasi desain PCB, fabrikasi, pemrograman, sampai pengujian 2 iterasi. Pada pengujian iterasi pertama purwarupa berhasil mengidentifikasi kontraksi/aktivasi otot dengan amplitudo di sekitar 1 milivolt dan juga aktivitas ripple/noise yang berhasil dieliminasi pada iterasi kedua dengan perbaikan posisi perekaman sinyal. Perbandingan pola rekaman dengan Myoware muscle sensor juga menunjukkan kemiripan hasil yang menandakan kemiripan hasil satu sama lain dengan perbendaan yang minimum.

The rapid development in the field of Biosensing technology has allowed scientists to explore a multitude of biosignal application. One of this application is the Human-Computer Interface, which allows humans to directly control a machine without direct physical inputs. For a HCI device to be efficiently utilized, the sensors utilized in acquiring human biosignal must be somewhat comfortable to use and mobile. In this Bachelor’s Thesis the author proposed a modification design for OpenBCI Cyton biosensing board, which replaced its outdated RFDuino RFD22302 with the newer, widely used, and well-documented Espressif ESP-32. Research processes include the base PCB modification, its fabrication, programming, and 2 iteration of testing. First has shown that the prototype is capable of detecting EMG signals with the amplitude of around 1 millivolt but also the presence of noise/ripple, which was successfully eliminated in the second iteration with better recording positioning. Further comparison also has shown that the prototype’s recording result was highly similar with the recording result from Myoware muscle sensor with only slight differences."
Depok: Fakultas Teknik Universitas Indonesia, 2020
S-pdf
UI - Skripsi Membership  Universitas Indonesia Library
cover
Doloksaribu, Immanuel Chandra Hasonangan
"ABSTRAK
Pada tugas akhir ini, saya menganalisa probabilitas outage dari teknologi full-duplex dengan menggunkan sistem MIMO (2x2) dengan memperhatikan faktor dari self-interference. Faktor self-interference pada tugas akhir ini diasumsikan telah ditekan dengan menggunakan active dan passive cancellation. Diasumsikan kanal yang dilalui sinyal antar 2 node merupakan kanal Rayleigh dan kanal yang dilalui sinyal interferensi merupakan kanal Rician. Selanjutnya, akan diperhatikan nilai dari probabilitas outage akibat dampak dari perubahan faktor K, 𝛾̅ɑ adalah SINR (Signal to Interference plus Noise Ratio), threshold rate (R) dan jumlah antena (N). Pada hasil perhitungan dengan nilai dari K = 35 dB atau lebih serta SINR = 70 dB dan R = 10 bps/Hz, probabilitas outage bernilai lebih dari 10-2 namun, dengan nilai SINR = 70 dB dan R = 10 bps/Hz, probabilitas outage bernilai lebih kecil dari 10-4 untuk nilai K = 15 dB atau kurang, maka didapat bahwa probabilitas outage meningkat jika nilai K meningkat. Selanjutnya, dengan nilai K = 10 dB didapat nilai dari probabilitas outage sebesar 10-4 ketika nilai SINR = 60 dB dan probabilitas outage sebesar 10-6 ketika nilai SINR = 70 dB, maka didapat probabilitas outage menurun jika nilai SINR meningkat. Hasil perhitungan lainnya dengan nilai K = 10 dB, didapat nilai dari probabilitas outage lebih dari 0,2 ketika nilai R = 6 bps/Hz dan probabilitas outage sebesar 0,8 ketika nilai R = 8 bps/Hz, didapatkan Probabilitas outage meningkat jika nilai R meningkat. Selanjutnya, dengan nilai K = 15 dB dan R = 20 bps/Hz, didapatkan nilai probabilitas outage sebesar 0,4, namun ketika nilai dari K = 15 dB dan R = 20 bps/Hz, nilai dari probabilitas outage dibawah 0,1, maka probabilitas outage menurun jika nilai N meningkat.

ABSTRACT
In this report, I analyze an outage probability in bidirectional nirkabel communication using full-duplex MIMO system with consider effect of self-interference. The self-interference in this report is mitigated by active and passive cancellation, yet there is still interference happens in this system, called residual interference. Assumed, transmit information signal (channel between node-1 and node-2) using Rayleigh fading channel and express interference signal stream using Rician fading channel. I derive a closed-form solution of outage probability towards effect of Rician factor (K), γ̅ɑ is SINR (Signal to Interference plus Noise Ratio), threshold rate (R) and number of antenna (N). With SINR is 70 dB and R is 10 bps/Hz, value of outage probability is more than 10-2, yet with SINR is 70 dB and R is 10 bps/Hz, we get value of probability is below 10-2 for value of K is 15 dB or below, we obtain that value of outage probability increases when we increasing value of K. At value of K is 10 dB, we get outage probability is 10-4 when SINR is 60 dB and outage probability is 10-6 when SINR is 70 dB, from the result we conclude that for certain value of R, as SINR increases outage probability decreases for given K. Furthermore, at value of K is 10 dB, we get outage probability is more than 0.2 when R is 6 bps/Hz and outage probability is 0.8 when R is 8 bps/Hz. We get that as threshold rate increases outage probability increases for given SINR. Moreover, at value of K is 15 dB and R is 20 bps/Hz, we get outage probability is 0.4 but when value of K is 15 dB and R is 20 bps/Hz, we get outage probability is below 0.1. We obtain that increases number of antenna will decreases value of outage probability."
Depok: Fakultas Teknik Universitas Indonesia, 2016
S62971
UI - Skripsi Membership  Universitas Indonesia Library
cover
Feher, Kamilo
Upper Saddle River, N.J. : Prentice-Hall, 1995
621.384 5 FEH w
Buku Teks  Universitas Indonesia Library
cover
"Two of the fastest growing sectors of communications today are mobile and Internet, both of which have had a profound effect on people's lives. The convergence between these two sectors not only presents great opportunities for the future of 'unplugged' telecommunications, but also great challenges in understanding the relative position of different technologies in this future.
This book reviews the contribution of different wireless access technologies to that future and looks at the opportunities of opening up access to telecommunications systems, via application programming interfaces (APIs). The economic and regulatory issues associated with wireless communications are also discussed, with a look at the history and potential future of mobility from a user perspective."
London: Institution of Engineering and Technology, 2008
e20452603
eBooks  Universitas Indonesia Library
cover
Daranawandi Fadjar
"Teknologi jaringan 3G WCDMA telah dioperasikan oleh operator telekomunikasi di Indonesia mulai pertengahan tahun 2006 dengan beraneka ragam layanan dan fitur. Adanya layanan dan fitur ini membuka peluang bisnis baru bagi operator maupun bagi perusahaan lain yang ingin berkecimpung dalam bisnis ini. Salah satu layanan yang berpotensi untuk dijadikan bisnis adalah layanan video on demand, yang merupakan bentuk layanan 3G dimana pelanggan dapat menikmati ataupun menyaksikan film atau video yang diinginkannya hanya melalui perangkat handphone yang dimilikinya, sehingga pelanggan dapat merasa nyaman, dan memiliki kebebasan dalam memilih hiburan yang diinginkan. Untuk mengetahui kelayakan perencanaan model bisnis revenue share video on demand di pada layanan 3G DKI Jakarta, perlu adanya suatu analisa perencanaan model bisnis. Analisa perencanaan model bisnis ini dibuat dengan meninjau beberapa aspek penting dalam perencanaan bisnis, yaitu : aspek pemasaran, aspek lingkungan industri, aspek teknologi, aspek regulasi, aspek sumber daya manusia dan aspek keuangan. Dalam analisa perencanaan ini untuk menentukan proyeksi pelanggan video on demand, digunakan acuan data dari PT. Telkomsel tahun 2005 sampai dengan tahun 2007. Perencanaan bisnis dibuat dengan menggunakan 3 skenario, yaitu skenario 1 dengan asumsi tarif layanan tetap, skenario 2 dengan asumsi tarif layanan naik, dan skenario 3 dengan asumsi tarif layanan turun. Dari hasil analisa seluruh aspek dapat disimpulkan bahwa model bisnis revenue share video on demand pada layanan 3G yang layak diterapkan di DKI Jakarta adalah dengan menggunakan skenario 1, dimana hasil dari analisa keuangannya diperoleh nilai parameter Payback Period selama 2 tahun, NPV USD 583,302 , IRR sebesar 43%, dan Profitability Index sebesar 1.458.

The 3G WCDMA network technology has been operated by the telecommunication operators in Indonesia since the middle of 2006 with various services and features. These services and features open a prospect of new lines of business for the operators and also for other companies who are interested to take part in this business. One of the service that has the potential to become a new line of business is the ?video on demand? service. Video on demand is a form of 3G services where customers can watch and enjoy watching films or videos that they want, simply through cellular phones, so that the customers feel comfortable and have the freedom in choosing the entertainment that they want. In order to understand the feasibility of revenue share video on demand business plan of the 3G service in DKI Jakarta, an analysis of a business plan model is necessary. The analysis of the business plan model is done by examining some important aspects in business planning, which are: the marketing, regulation, human resource, and financial aspects. This plan analysis is using data from PT. Telkomsel from the year 2005-2007 to forecast the video on demand customers. The business plans are made using three scenarios: the first scenario with the assumption of fixed tariff; the second scenario with the assumption of increasing tariff; and the third scenario with the assumption of decreasing tariff. The feasibility analysis result from all aspects leads to the first scenario as the most feasible to be applied in DKI Jakarta. The first scenario of revenue share video on demand business model of the 3G service has the value of Payback Period for 2 years, NPV USD 583,302 , 43% IRR, and 1.458 Profitability Index. In order to increase the profit of this business, it is advised to engage partnerships with several services/network operators in Indonesia."
Depok: Fakultas Teknik Universitas Indonesia, 2007
T40810
UI - Tesis Membership  Universitas Indonesia Library
cover
Singh, Dhananjay
"This book highlights new methods, algorithms and software for the digital processing and recovery of signals. In addition, it describes a new method for modeling one dimensional and multidimensional signals as successions of local polynomial splines and their spectral characteristics. It provides examples of how the proposed methods can be applied in specific cases, together with signal processing software examples in the MATLAB environment, and models of special processes in the Simulink environment. The books goal is to make it easier for beginners to understand the subject matter; it is intended for engineers, undergraduate and graduate students engaged in research or the evaluation and design of hardware and software for the digital processing and recovery of signals."
Singapore: Springer Nature, 2019
e20509801
eBooks  Universitas Indonesia Library
cover
Agrawal, Dharma P.
Singapore : Cengage Learning , 2011
384.5 AGR i
Buku Teks  Universitas Indonesia Library
cover
"This book constitutes the thoroughly refereed post-conference proceedings of the Third International ICST Conference Mobile Lightweight Wireless Systems (MOBILIGHT 2011) held in Bilbao, Spain on May 9-10. 2011. In numbers, MOBILIGHT 2011 was organized as a 2-day single-track event with 18 technical presentations, and 3 specialized workshops focused on opportunistic sensing and processing in mobile wireless sensor and cellular networks (MOBISENSE), multimode wireless access networks (MOWAN) and strategic network planning applied to market regulation (NETSTRAT), totaling to 34 papers presented during the conference and included in the proceedings"
Heidelberg: Springer, 2012
e20409692
eBooks  Universitas Indonesia Library
cover
Rappaport, Theodore S., 1960-
New Jersey: Prentice-Hall, 1996
621.382 RAP w
Buku Teks  Universitas Indonesia Library
cover
Siti Kamila
"Implementasi layanan 3G di Indonesia memerlukan sebuah jaminan kualitas layanan bagi para pelanggannya yang di dalam istilah telekomunikasi biasa dikenal dengan sebutan QoS (Quality of Service). Salah satu cara pengukuran Nilai QoS adalah drive test, yaitu sebuah metode pengukuran trafik yang dilakukan dari satu wilayah ke wilayah lain dengan cara berpindah tempat atau mobile baik menggunakan kendaraan atau berjalan kaki. Drive test ini dianggap dapat mewakili data QoS dari sisi pelanggan. Wilayah pengukuran drive test yang dipilih adalah wilayah DKI Jakarta sebagai daerah utama implementasi layanan jaringan 3G dan dikhususkan pada daerah segitiga emas untuk jaringan 3G Telkomsel. Hasil pengukuran drive test tersebut kemudian dianalisa dengan menggunakan metode DOE (Design of Experiments) untuk desain Two-Factor fixed Effect Model. DOE ini mempunyai kemampuan untuk mengolah sedikit data untuk menghasilkan suatu kesimpulan yang sah dan objektif. Keluaran dari penghitungan DOE adalah uji nilai QoS. Dengan mengacu kepada parameter QoS yang telah ditetapkan oleh 3GPP, maka proses selanjutnya adalah membandingkan antara hasil analisa DOE untuk pengukuran QoS wilayah DKI Jakarta dengan QoS Standar operator. Hasil perbandingan tersebut menggambarkan tingkat baik atau buruknya QoS 3G Telkomsel wilayah DKI Jakarta. Dan dengan menggunakan DOE, hasil yang diperoleh lebih akurat walaupun menggunakan jumlah sampel yang lebih sedikit.

3G services in Indonesia need a quality guarantee for its customers. The guarantee of quality in telecommunication network is known by QoS (Quality of Service). One of methods to measure QoS value on user side is a drive test. Drive test is a traffic measurement method where data is collected by mobile activities, i.e. driving or walking from one area to other area. Before collecting the data, first of all we have to determine specific area and network to be measured. In this writing DKI Jakarta has been chosen as measurement area since it is a major area for 3G implementation. For the measured network, Telkomsel 3G network has been chosen. The next step is to analize drive test data using DOE (Design of Experiments) method for Two-Fixed Effect Model. DOE is capable to analyze a few experiments to produce a valid and an objective result. DOE output is a QoS verification where the final process is taken by comparing QoS measurement in DKI Jakarta with operator standard. The result of this experiment is a QoS 3G level in DKI Jakarta. Even using a few data, the DOE output is more acurate than output of reguler process."
Depok: Fakultas Teknik Universitas Indonesia, 2007
T40805
UI - Tesis Membership  Universitas Indonesia Library
<<   1 2 3 4 5 6 7 8 9 10   >>