Sukiswo Sukiswo
Jurusan Teknik Elektro, Universitas Diponegoro Semarang Jl. Prof. Sudharto, SH, kampus UNDIP Tembalang , Semarang 50275, Indonesia

Published : 57 Documents
Articles

ANALISIS KINERJA JARINGAN WIRELESS LAN BERDASARKAN MEKANISME LOAD BALANCING DENGAN ALGORITMA LEAST CONNECTION MENGGUNAKAN SIMULATOR OPNET 14.5 Nisfari, Hauril Maulida; Sukiswo, Sukiswo; Zahra, Ajub Ajulian
Transmisi Vol 17, No 1 Januari (2015): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (615.119 KB) | DOI: 10.12777/transmisi.17.1.42-46

Abstract

Abstrak   Penggunaan teknologi Wireless sudah tidak bisa dielakkan lagi saat ini. Teknologi Wireless yang banyak digunakan saat ini adalah WLAN (Wireless Local Area Network). Peningkatan jumlah user ini tentu saja berpengaruh terhadap kinerja server sebagai penyedia layanan. Mekanisme Load Balancing adalah salah satu strategi yang digunakan oleh pengelola jaringan untuk menyeimbangkan beban antar server. Pada penelitian ini dirancang sebuah jaringan Wireless LAN yang menerapkan mekanisme Load Balancing beserta pengaturan algoritma Least Connection menggunakan software OPNET 14.5.Perancangan dilakukan untuk membandingkan kinerja layanan WLAN tanpa Load Balancing dan dengan Load Balancing dengan parameter-parameter yang digunakan adalah throughput, delay jaringan, Response Time dan fairness index untuk tiap pengguna aplikasi yang berbeda.Dari hasil simulasi diperoleh nilai Throughput pada jaringan dengan Load Balancing untuk layanan HTTP berkisar antara 100-120 Kbps, untuk layanan FTP antara 80-100 Kbps dan untuk Email berkisar 50-60 Kbps. Algoritma Least Connection memberikan cukup adil alokasi pembagian lebar pita, dibuktikan dengan fairness index untuk ketiga skenario berkisar 0,7-0,8 dibandingkan dengan jaringan tanpa Load Balancing dengan fairness index berkisar 0,4-0,7. Mekanisme Load Balancing bekerja optimal pada skenario 3 dengan Delay dan Response Time yang lebih kecil.   Kata kunci : OPNET Modeler v14.5, Load Balancing, Least Connection Algorithm   Abstract   The use of wireless technology has become inevitable at this time. Wireless technology that is widely used today is WLAN (Wireless Local Area Network). Load Balancing Mechanism is one of the strategies used by network managers to balance the load among servers. In this research has been designed a wireless LAN network that implements Load Balancing mechanism and its Least Connection algorithm settings using OPNET 14.5 software. The design is performed to compare the performance of WLAN services without Load Balancing and with Load Balancing with parameters used are the throughput, the network delay, response time and fairness index for each user of different applications.From the simulation results obtained that the throughput on the network with Load Balancing for HTTP service ranges from 100-120 Kbps, for FTP services between 80-100 Kbps and for Email ranged 50-60 Kbps. Least Connection algorithm provides fair allocation of bandwidth sharing, evidenced by the fairness index for the three scenarios range 0.7-0.8 compared to networks without Load Balancing with fairness index ranges from 0.4-0.7. Load Balancing mechanism works optimally in Scenario 3 with smaller Response and Time Delay.   Keywords : OPNET Modeler v14.5, Load Balancing, Least Connection Algorithm
PERBAIKAN TCP WESTWOOD + Sukiswo, Sukiswo
Transmisi Vol 10, No 1 (2008): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (419.126 KB) | DOI: 10.12777/transmisi.10.1.27-32

Abstract

TCP Westwood+ is  evolution of TCP Westood. TCP Westwood+ representing one of TCP proposed for the modification of existing TCP now. Specially TCP Westwood+, TCP Westwood+ sender keeps an end to end bandwidth estimation to adjust the smart transmission rate after detection a packet loss. In this way , TCP Westwood+ can improve; repair the standard TCP (Newreno, SACK) in a lossy environment. This paper comment the mechanism congestion base control TCP Westwood+, testing performance of TCP Westwood+, enhance TCP Westwood+ by modification increase phase from additive mechanism to multiplicative mechanism, and compare with TCP Westwood+ standard.Keywords: TCP Westwood+, end to end bandwidth  estimation, estimation filter, additive mechanism,  multiplicative mechanism
KINERJA AKSES JAMAK OFDM-CDMA Sukiswo, Sukiswo; Zahra, Ajub Ajulian
Transmisi Vol 11, No 1 (2009): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (529.161 KB) | DOI: 10.12777/transmisi.11.1.1-8

Abstract

Problems in the current telecommunications system is how to send data with a very high speed but limited in the frequency allocation. One of the solution of this problems that is used a OFDM (Orthogonal Frequency Division Multiplexing) system which is a multicarrier communication scheme where the inter-frequency subcarriers orthogonal to each other and overlapping each other so it can save the frequency allocation. To serve more than one user, OFDM systems have combined with a CDMA multiple access technique.A simulation of the OFDM system created using Matlab by applying the CDMA system for the multiple access technique in the OFDM system and known as CDMA-OFDM. Combination of these two techniques will increase the speed of data transmission and it can serve many users at one time. This final project aims to determine the influence of the number of users in the system, the long PN code, the number of subcarrier and the value of Eb/No CDMA-OFDM system in Additive White Gaussian Noise (AWGN) transmission channel. The performance of the system was known from the value of Bit Error Rate (BER) at receiver.For PN code length variation 32, 64 and 128, the simulation CDMA-OFDM system with 32 users showed that the longer PN code is used, the system will show a better performance. It can be seen from the value of the BER system is decreases. For  PN code length 32, the system will show the value of BER 0 in the level of Eb/No 9 dB. For PN code length 64, the system will show the value of BER 0 in the level of Eb/No 7 dB and for PN code length 128, the system will show the value of BER 0 in the level of Eb/No 3 dB. Keywords: CDMA, OFDM, PN code, subcarrier, multiuser.
PERANCANGAN DAN ANALISIS ANTENA MIKROSTRIP DENGAN FREKUENSI 850 MHZ UNTUK APLIKASI PRAKTIKUM ANTENA Nugraha, Adhe Setya; Christyono, Yuli; Sukiswo, Sukiswo
Transmisi Vol 13, No 1 (2011): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (487.192 KB) | DOI: 10.12777/transmisi.13.1.39-45

Abstract

Problems antenna of conductor materials is rather complicated construction and size are usually quite large, so for purposes such as a cellular system is considered less efficient. For this purpose requires a simple antenna, a thin, easy to manufacture, and can be connected with other circuits. Then came the idea to design a microstrip antenna that antenna. How to make a microstrip antenna is printed on the plate by the PCB (Printed Circuit Board), then peradiasinya coated with a solution of silver or other conductor material. Who's lining material that many in the market is epoxy glass fiber (e r = 4.7) with 1.5 mm layer thickness. The purpose of this thesis is to create some models of microstrip antenna that can later be used in practical antenna. The antenna was designed at a frequency of 850MHz with a square, equilateral triangle, and circle. Then the three forms of microstrip antenna design results will be analyzed using software IE3D V12 to obtain the design parameters of antenna and frequency of these antennas. The third form of radiation pattern of microstrip antenna is directional (directional). Results of simulation of microstrip circular antennas : resonant frequency = 0.8535 GHz, VSWR = 1.046, retrun loss = - 32.89 dB, bandwidth = 1.4167%, the total gain = - 0.673953 dB, HPBW = 170,5110, rectangular microstrip antenna : resonance frequency = 0.849503 GHz, VSWR = 1109, return loss = - 25.7143 dB, bandwidth = 1.4547%, the total gain = - 0.205832 dB, HPBW = 170,6550 and for equilateral triangular microstrip antennas : resonant frequency = 0, 8515 GHz, VSWR = 1115, return loss = -25.28 dB, bandwidth = 1.3055%, the total gain = - 2.32265 dB, HPBW = 170,5710. And on the test results obtained for circular microstrip antennas : resonant frequency = 900MHz, VSWR = 1.03, power received = 0.067 mW, HPBW = 620, rectangular microstrip antennas : resonant frequency = 895MHz, VSWR = 1.04, power received = 0.039 mW, HPBW = 880 and antenna for microstrip equilateral triangle : resonance frequency = 895MHz, VSWR = 1.05, power received = 0.033 mW, HPBW = 690. Keywords: microstrip antenna, substrat materials, antenna parameters, the working frequency antenna
IMPLEMENTASI LAYANAN INSTANT MESSAGING BERBASIS IP MULTIMEDIA SUBSYSTEM MENGGUNAKAN VIRTUAL SERVER Radhian, Fakkar Robbi; Christyono, Yuli; Sukiswo, Sukiswo
Transmisi Vol 16, No 1 (2014): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (489.89 KB) | DOI: 10.12777/transmisi.16.1.7-12

Abstract

Abstrak IMS (IP Multimedia Subsystem) didefinisikan oleh 3GPP (3rd Generation Partnership Project) Sebagai subsistem baru yaitu suatu teknologi jaringan  yang memungkinkan pemusatan data, suara, dan gambar melalui suatu infrastruktur berbasis IP. IM(Instant Messaging) adalah teknologi yang memungkinkan para pengguna dalam jaringan untuk mengirimkan pesan singkat secara langsung pada saat yang bersamaan menggunakan teks, gambar, atau pengiriman berkas kepada pengguna lainnya yang sedang terhubung ke jaringan yang sama. Pada tugas akhir ini akan di implementasikan dan dianalisis layanan Instant Messaging berbasis IMS menggunakan virtual server.Dari implementasi ini akan dianalisis dari tinjauan Quality of service yaitu delay, packet loss, jitter dan throughput diharapkan mampu memberikan informasi tentang parameter kelayakan QoS pada jaringan IMS untuk layanan Instant Messaging. Dari hasil pengujian dan analisis dapat diketahui bahwa IMS dapat di implementasikan pada jaringan lokal menggunakan server virtual. Nilai delay, jitter, throughput, dan packet loss sudah sesuai dengan standar dari ITU-T G.1010.Selain itu diketahui pula bahwa kualitas layanan IMS tergantung penggunaan jaringan yang digunakan.   Kata Kunci :IMS, Instant Messaging, dan QoS.     Abstract IMS (IP Multimedia Subsystem) defined by 3GPP (3rd Generation Partnership Project) As the new subsystem is network technology that enables the centralization of data, sound and images via an IPbased infrastructure.IM (Instant Messaging) is a technology that allows the users of the network to send brief messages directly at the same time using text, images or sending files to other users who are connected to the same network. The final project will be implemented and analyzed the IMS-based Instant Messaging service using virtual server. The implementation will be analyzed from the review Quality of service among others his delay, packet loss, jitter and throughput is expected to provide information about the QoS parameters on the network requirements of IMS  for the Instant Messaging service. Testing and analysis of the results can be known that IMS can be implemented on a local network using a virtual server. The value of delay, jitter, packet loss, and throughput is in compliance with the standard of ITU-T G.1010. Additionally note that IMS service quality depends on the use of network load used.   Keyword:IMS, Instant Messaging, and QoS.
EVALUASI UNJUK KERJA ROUTING LINK-STATE PADA JARINGAN PACKET SWITCHED MENGGUNAKAN NS-2 (NETWORK SIMULATOR–2) Sukiswo, Sukiswo
Transmisi Vol 10, No 3 (2008): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (267.041 KB) | DOI: 10.12777/transmisi.10.3.138-143

Abstract

Routing is processing to find route from source to destination in communication network Data from source to destination will be delivered from one node to other node and need the best route. The best route is the shortest path with minimum cost and connected with other path. Routing become  important for delivered data from source node  to destination node. Link-State is one of routing algoritm  being used in packet switched network. Link-State will calculate the best route and keep the result for data base in router. After calculation will beknow the best route with minimum link-cost  for destination.In this final project will be shown the routing simulation with Link-State routing protocol used NS?2 (Network Simulor?2), the simulation software for communication network. The network use different number of router, that is twenty routers, thirty routers, fourty routers, and  fifty routers. From simulation the performance will be analized from Link-State routing protocol in the packet switched network. The performance measurement is throughput, packet loss, and delay. The network use fourty routers showing the best performance for the network which simulated in this final project. Keywords :  routing, packet-switched, link-state, node, link, NS  ? 2, link-cost, throughput, packet loss, and delay
ANALISIS MEKANISME REHOMING DAN REPARENTING PADA JARINGAN KOMUNIKASI SELULER GSM Putrantyono, Putrantyono; Santoso, Imam; Sukiswo, Sukiswo
Transmisi Vol 12, No 3 (2010): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (368.018 KB) | DOI: 10.12777/transmisi.12.3.113-119

Abstract

Kendala yang dialami suatu jaringan seluler umumnya adalah meluapnya trafik pada suatu area, pembatasan wilayah (border cluster) yang kurang optimal dan beberapa kendala lainnya. Mekanisme rehoming dan reparenting dapat menjadi solusi dari permasalahan tersebut. Rehoming adalah salah satu proses penyeimbangan kinerja BSC dan reparenting adalah salah satu proses penyeimbangan kinerja MSC. Beban trafik pada suatu area dapat diseimbangkan sehingga mengurangi resiko kegagalan panggilan,  pembatasan wilayah dapat dioptimalkan sehingga mengurangi banyaknya  proses handover pada suatu area dan beberapa hal lain.  Berdasarkan hal tersebut pada tugas akhir ini dilakukan analisis tentang mekanisme rehoming dan reparenting pada jaringan komunikasi seluler GSM. Analisis dilakukan pada satu operator seluler dengan sampel rehoming beberapa Base Station Controller (BSC) untuk area Solo dan Sragen, reparenting pada area Pancuran dan Karanganyar. Pengamatan dilakukan berdasarkan parameter indikator keberhasilan suatu rehoming dan reparenting seperti trafik TCH (Traffic Channel) dan SDCCH (Stand alone Dedicated Control Channel), TCH dan SDCCH Drop, TCH dan SDCCH Blocking, paging message sent, delete paging command dan CSSR (Call Setup Success Rate).  Berdasarkan  analisis tersebut maka dapat diketahui pengaruh mekanisme rehoming dan reparenting pada jaringan GSM , antara lain berubahnya  trafik  TCH pada BSC B_SRAGEN yang sebelumnya sebesar 509,74 erlang menjadi 605,12 erlang. Nilai SDCCH drop pada BSC B_Karanganyar yang sebelumnya 3,71 % menjadi 3,57 % . Pada BSC Pancuran, nilai paging message sent sebelumnya 94.932 unit menjadi 95.539 unit dan nilai paging delete command sebelumnya 1.512 unit menjadi 1.392 unit sedangkan nilai TCH drop sebelumnya 0,98 % menjadi 0,86 %, nilai TCH blocking sebelumnya 0,02 % menjadi 0 %, nilai SDCCH blocking sebelumnya 0,77 % menjadi 0,02%. Mekanisme rehoming dan reparenting dinyatakan berhasil bila nilai-nilai parameter tersebut dapat dipertahankan atau menjadi lebih baik daripada sebelumnya. Keyword :   rehoming, reparenting.
PERANCANGAN MODULATOR DAN DEMODULATOR QUADRATURE PHASE SHIFT KEYING (QPSK) DENGAN RANGKAIAN BALANCE MODULATOR Wibisono, Randi Dwi; Sukiswo, Sukiswo; Christyono, Yuli
Transmisi Vol 16, No 2 (2014): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (586.833 KB) | DOI: 10.12777/transmisi.16.2.69-78

Abstract

Abstrak Modulasi QPSK (Quadrature Phase Shift Keying) adalah teknik modulasi digital yang merupakan pengembangan dari modulasi PSK (Phase Shift Keying) dengan memanfaatkan perubahan fasa dari sinyal pembawa.Modulasi QPSK dapat mengkodekan dua bit per simbol yang ditujukan untuk meminimalkan bit eror rate (BER). Pada penelitian ini dirancang perangkat modulator dan demodulator QPSK yang menggunakan rangkaian balance modulator sebagai pencampur sinyal informasi dengan sinyal pembawa. Dengan menggunakan rangkaian balance modulator hanya dibutuhkan sinyal data dan sinyal pembawa sebagai masukannya. Rangkaian balance modulator menghasilkan dua buah sinyal keluaran yang memiliki beda fasa 180o. Sinyal keluaran balance modulator yang masih berupa sinyal BPSK harus dijumlahkan agar didapatkan sinyal QPSK. Sinyal QPSK yang dihasilkan oleh perangkat modulator tersebut dimasukan ke perangkat demodulator untuk mendapatkan kembali sinyal informasi. Dari pengukuran dan pengujian perangkat modulator dan demodulator QPSK dapat diketahui bahwa sistem telah bekerja dengan baik. Hasil pencampuran sinyal data dengan sinyal pembawa menggunakan rangkaian balance modulator menghasilkan sinyal BPSK, akan tetapi bentuk sinyal sinus pada BPSK kurang sempurna. Terdapat waktu tunda antara data masukan pada perangkat modulator dengan data keluaran pada perangkat demodulator sebesar 31,2 us. Waktu tunda ini terjadi karena ada proses penjumlahan sinyal BPSK menjadi sinyal QPSK pada bagian modulator, proses penapisan dan pengkonversian dari data paralel menjadi data serial pada bagian demodulator. Kata Kunci :QPSK, modulator, demodulator, balance modulator     Abstract   QPSK (Quadrature Phase Shift Keying) modulation is a digital modulation technique which is developed from PSK (Phase Shift Keying) modulation by utilizing the phase change of the carrier signal.QPSK modulation can encode two bits per symbol for minimizing the bit error rate (BER). On this research, QPSK modulator and demodulator devices that uses balance modulator circuit as carrier signal and signal information?s mixer were designed.By using balance modulator circuit, it only needs a data signal and carrier signal as an input.Balance modulator circuit generates two output signals which have 180° phase difference. Balance modulator output signal which is still a BPSK signal must be added in order to obtain QPSK signal. QPSK signal generated by the device is inserted into demodulator device to recover information signal. The system has worked well by measuring and testing QPSK modulator and demodulator devices. The results of data signal by mixing the carrier signal using a series of balance modulator generates a BPSK signal, but the shape of BPSK sine signal was not perfect.There is a time delay between the input data on the device with demodulator device output for 31.2 us. Time delay is caused by BPSK signal summation process that becomes the QPSK signal at the modulator, the filtering process and the conversion of parallel data into serial data at demodulator. Keywords :QPSK, modulator, demodulator, balance modulator
ANALISIS KINERJA KOMBINASI SISTEM CDMA-OFDM DENGAN MIMO Awirya, Valen; Sukiswo, Sukiswo; Zahra, Ajub Ajulian
Transmisi Vol 12, No 2 (2010): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (360.971 KB) | DOI: 10.12777/transmisi.12.2.50-56

Abstract

Wireless transmission system is hampered by a condition that causes multipath channel fading at the receiver. It required transmission technologies that are resistant to multipath channel conditions. One is multiple access technology combination of OFDM and CDMA. To further increase the interference immunity of signal channel is carried out in combination with the MIMO antenna diversity technology.  This final project is to make simulation of multiple access technologies CDMA-OFDM combined with MIMO. The parameters varied are the number of the receiving antenna and the speed of the user. Channel used is the Rayleigh channel and Additive White Gaussian Noise (AWGN). The performance of the system can be measured Bit Error Rate (BER) compared to the value of Eb / No. Performance of 2x5 MIMO system with the speed of the user 5 km/h produces Eb/No 3 dB lower than 2x3 MIMO and 1,5 dB lower than 2x4 MIMO to achieve the target BER 10-3. Performance of 2x5 MIMO system with the speed of the user 40 km/h produces Eb / No 4 dB lower than 2x3 MIMO and 1 dB lower than 2x4 MIMO to achieve the target BER 10-3. At speeds of 80 km /h, the performance of MIMO  CDMA -OFDM system worst found on 2x3 MIMO scheme, the target BER 10-3 can not be fulfilled on the value of Eb/No = 30. 2x4 and 2x5 schemes provide better performance with a value of Eb/No of 8 dB and 4 dB to achieve the target BER.The increase in user speed degrade the performance of MIMO CDMA -OFDM system. With 2x5 MIMO scheme on the user speed 5 km / h, the target BER 10-3 is reached on the value of Eb/No of about 1 dB. While at the speed of 40 km / h and 80 km/h achieved at Eb/No value of about 2 dB and 4 dB. Keyword :   CDMA, OFDM, MIMO, Rayleigh, AWGN
PERENCANAAN JARINGAN THIRD GENERATION (3G) UNIVERSAL MOBILE TELECOMMUNICATION SYSTEM (UMTS) DI JAKARTA PUSAT Hanindito, Bramono; Sukiswo, Sukiswo; Zahra, Ajub Ajulian
Transmisi Vol 15, No 4 (2013): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (428.983 KB) | DOI: 10.12777/transmisi.15.4.159-163

Abstract

Abstrak   3G singkatan dari (Third Generation) merupakan sebuah standar yang ditetapkan oleh International Telecommunication Union (ITU) yang diaplikasikan pada jaringan telepon seluler. Melalui 3G, pengguna telepon selular dapat memiliki akses cepat ke internet dengan bandwidth sampai 384 kbps. Untuk mendukung tersedianya layanan 3G, diperlukan perencanaan jaringan yang matang agar dapat memberikan wilayah cakupan yang baik untuk setiap pengguna 3G. Pada penelitian ini dilakukan perencanaan jaringan 3G UMTS di area Jakarta Pusat, dimana area tersebut didominasi oleh area padat penduduk serta perkantoran yang banyak terdapat gedung tinggi. Perencanaan dilakukan menggunakan bahasa pemrograman matlab dengan beberapa parameter masukan antara lain data kependudukan, nilai data rate pada jam sibuk, nilai link budget, serta diperlukan pemetaan awal untuk menentukan daerah padat penduduk dan daerah  pekantoran. Model propagasi menggunakan COST 231 Walfisch-Ikegami dimana merupakan model propagasi yang paling cocok untuk daerah perkotaan serta sesuai untuk menganalisis frekuensi kerja jaringan 3G.Hasil akhir dari pehitungan yang dilakukan merupakan luas wilayah cakupan. Pada daerah perkantoran didapatkan radius sel wilayah cakupan mencapai 1,02km, sedangkan pada daerah perumahan mencapai 0,68km. Dilakukan juga pemetaan sel untuk penempatan node-B. Kata kunci: 3G, UMTS, COST 231 Walfisch-Ikegami, Link budget     Abstract Stands 3G (Third Generation) is a standard defined by the International Telecommunication Union (ITU) which is applied to the cellular phone network. Through 3G, mobile phone users can have quick access to the internet with a bandwidth up to 384 kbps. To promote the availability of 3G services, required careful planning of the network in order to provide a good coverage area for each 3G user. In this final project was planning UMTS 3G networks in Central Jakarta area, where the area is dominated by densely populated area and there are many office buildings. Planning is done using matlab programming language with several input parameters such as demographic data, the value of the data rate during peak hours, the value of the link budget, as well as the initial mapping is needed to determine the densely populated areas and regions pekantoran. Propagation model using the COST 231 Walfisch-Ikegami propagation model which is most suitable for urban areas as well as appropriate to analyze the working frequency 3G network The end result is conducted an extensive area of ??coverage. In the office area obtained cell radius coverage area reaches 1.02 km, while the residential areas reached 0.68 miles. Well done to the placement cell mapping node-B. Keywords: 3G, UMTS, COST 231 Walfisch-Ikegami, Link budget