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Space time coding in MIMO systems

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dc.contributor.advisor Liu, Huaping
dc.creator Xian, Liang
dc.date.accessioned 2006-09-13T16:53:05Z
dc.date.available 2006-09-13T16:53:05Z
dc.date.copyright 2006-08-02
dc.date.issued 2006-09-13T16:53:05Z
dc.identifier.uri http://hdl.handle.net/1957/3049
dc.description Graduation date: 2007
dc.description.abstract Multiple-input multiple-output (MIMO) antenna technology is promising for high-speed wireless communications without increasing the transmission band- width. Space time coding (STC) is a scheme that employs multiple antennas to increase transmission rate or to improve transmission quality. STC is used widely in mobile cellular networks, wireless local area networks (WLAN) and wireless metropolitan area networks (WMAN). However, there are still many unsolved or partially solved issues in STC. In this thesis, I propose a new STC design from cyclic design. I then propose a systematic method to design quasi-orthogonal space time block codes (QOSTBC) for an arbitrary number of transmit antennas, and derive the optimal constellation rotation angles to achieve full diversity. I also propose an analytical method to derive the exact error probabilities of orthogonal space time block codes (OSTBC). In order to improve the error performance, I introduce an adaptive power allocation scheme for OSTBC. Combining STC with continuous phase modulation (CPM) is an attractive solution for mobile commu- nications for which power is limited. Thus, I apply OSTBC to binary CPM with modulation index h = 0.5, and develop a simplified receiver for such scheme. Finally, I present a decoding method to reduce the complexity of QOSTBC without degrading its error performance. en
dc.format.extent 648241 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.subject space time code (STC) en
dc.subject wireless communications en
dc.subject multiple input multiple output (MIMO) en
dc.subject continuous phase modulation (CPM) en
dc.subject.lcsh Space time codes en
dc.subject.lcsh MIMO systems -- Design and construction en
dc.title Space time coding in MIMO systems en
dc.type Thesis en
dc.degree.name Doctor of Philosophy (Ph. D.) in Electrical and Computer Engineering en
dc.degree.level Doctoral en
dc.degree.discipline Engineering en
dc.degree.grantor Oregon State University en
dc.contributor.committeemember Temes, Gabor C.
dc.contributor.committeemember Scott, Michael H.
dc.contributor.committeemember Moon, Un-Ku
dc.contributor.committeemember Wang, Zhongfeng


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