ANALISIS UNJUK KERJA SISTEM MB-OFDM UWB PADA CHANNEL MODEL SALEH-VALENZUELA

• Main Authors: , Suthami Ariessaputra, , Dr. Eng. Ir. Risanuri Hidayat, M.Sc.
• 格式: Theses and Dissertations NonPeerReviewed
• 出版: [Yogyakarta] : Universitas Gadjah Mada 2011
• 主題: ETD
• 在線閱讀: https://repository.ugm.ac.id/89605/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=51738

UWB (Ultra Wide Band) technology is a wireless application technology that works at a frequency of 3.1-10.6 GHz. This technology is designed to transmit high data speed in an indoor environment. MB-OFDM (Multiband Orthogonal Frequency Division Multiplexing) UWB is one of the UWB data transmission system. Symbol on the system is not sent continuously on a single frequency band, but they are interleaved on a different sub band of time and frequency to reduce multiple access interference. UWB can be used in indoor and outdoor channel but its application has a problem which the presence of multipath effects. Multipath is the effect on the channel that occurs due to the objects of the reflector resulting in signal energy dissipation. This research studied about modeling of UWB communication system that uses MB-OFDM technique over the Saleh-Valenzuela channel model which has been modified. Channel model are used to simulate multipath environment for realistic conditions. Modeling these systems also use various kinds of digital modulation, i.e. BPSK, QPSK and 16 QAM. BER and SNR at each modulation will be analyzed to determine the performance of MB-OFDM UWB system. The results showed that BPSK, QPSK and 16QAM modulations can be applied to MB-OFDM UWB system according to the condition of the channel, if channel have small interference, could use a higher modulation level. On the level BER 10-3 with bit rate 480, QPSK modulation require 13 dB for SNR and 16QAM modulation require 16 dB for SNR. 16QAM modulation has higher SNR and bit rate than QPSK modulations.