ANALISIS KUALITAS PANGGILAN CODE DIVISION MULTIPLE ACCESS (CDMA) 2000 1X MENGGUNAKAN TEMS

Abstract

Code Division Multiple Access (CDMA) is a modulation technique and multiple access techniques based on directsequence spread spectrum signal transmission where the bandwidth occupied spectrum exceeds the minimum required in the spread spectrum technique. Development and use of CDMA techniques in multiple access wireless communications based on the consideration of the increasing needs of today's mobile communications. Channel capacity of cellular systems that have been applied so far from having limitations. CDMA 2000 1x is CDMA system with two kinds of channels. It is supplemental channel and fundamental channel. Fundamental channel for 9.6 kbps used for voice calls, while the Supplemental channels are used when making a call high-speed data packet at least twice the speed of the fundamental channel, and maximum reach 153.6 Kbps. Drive test is important and useful steps to obtain performance values of the mobile phone. Drive test device that is used TEMS which can be used as a drive test device CDMA network. Log files of TEMS drive test results must be exported use Actix Software to file (. tab), which in turn can be used in the analysis of call quality using CDMA 2000 1x main aid software Map Info. Analyzing the data and discussion of drive test on the Map Info is on every spot of the quality of the main parameters that are less good. Spot is a part of the overall area of the drive test route done. The main parameters are FFER (Forward FER), RSSI (Receive signal strength Interference), Ec / Io, TxGA, and Tx Power. Results of analysis showed that drive test route of this final project, almost in good call condition. However, there are many spot not in ideal conditions. Spot 1 suffer reverse channel interference. Then in spot 2 and spot 3 also occurs forward channel interference.. The unideal main parameters value caused by interference and incomplete handoff. It’s can be overcome with decrease TxPower level. Keywords: CDMA 2000 1x, Call Analysis, Drive Test, TEMS, Map Info, FFER, RSSI, Ec / Io, TxGA, Tx Power.