ANALISIS UNJUK KERJA SISTEM MB-OFDM UWB PADA CHANNEL MODEL SALEH-VALENZUELA
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 sy...
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| Main Authors: | , |
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| Format: | Theses and Dissertations NonPeerReviewed |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2011
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| Subjects: | |
| Online Access: | 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 |
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| Institution: | Universitas Gadjah Mada |
| Summary: | 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. |
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