Antenna And Frequency Diversity Improvement In Mimo Wimax Technology

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dc.contributor.authorKadhim, Mohammed Aboud
dc.date.accessioned2019-08-28T07:28:32Z
dc.date.available2019-08-28T07:28:32Z
dc.date.issued2011-08
dc.description.abstractDiversity is an influential communication technique that combats fading by exploiting the random nature of the wireless channel and finding independent signal paths between the transmitter and the receiver. In WiMAX PHY, diversity techniques such as time diversity, frequency diversity and antenna diversity are used to improve performance. The main objectives of this thesis are to improve diversity performance in WiMAX PHY. The first step is to modify the existing design and implement the PIFA antenna arrays for mobile handset application, exploiting antenna diversity in MIMO WiMAX mobile applications. The second step is the design and implementation of MIMO WiMAX (IEEE802.16.d) OSTBC-OFDM based wavelet and multiwavelet baseband transceiver applied to a multi-core software-defined radio platform for improved frequency diversity. A modified PIFA (Planar Inverted-F Antenna) design and its array were proposed and studied at 3.5 GHz. The unique PIFA with a small-size ground plane forms a self-composed structure and there are no connection losses when connecting to the ground plane and the top plate. The ground and top plates are made from the same copper plate, twisted in the specified dimensions. The ground plane, as small as the antenna, is situated between the PIFA and the PCB so that the PCB is no longer acting as a ground plane for the PIFA. The two PIFA modules and the four PIFA modules fixed on the PCB do not share the same ground plane.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/8705
dc.language.isoenen_US
dc.publisherUniversiti Sains Malaysiaen_US
dc.subjectAntenna And Frequencyen_US
dc.subjectMimo Wimax Technologyen_US
dc.titleAntenna And Frequency Diversity Improvement In Mimo Wimax Technologyen_US
dc.typeThesisen_US
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