Block Diagonalization Precoding and Signal Detection for Spatial Multiplexing MIMO Systems

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dc.contributor.authorAlwalid, Ali
dc.contributor.supervisorGulliver, Aaron
dc.date.accessioned2017-12-05T23:20:06Z
dc.date.available2017-12-05T23:20:06Z
dc.date.copyright2017en_US
dc.date.issued2017-12-05
dc.degree.departmentDepartment of Electrical and Computer Engineering
dc.degree.levelMaster of Engineering M.Eng.en_US
dc.description.abstractSpatial multiplexing (SM) multi-input multi-output (MIMO) systems can transmit independent data streams using multiple antennas to achieve high data rates. SM techniques can be employed in single-user multi-input multi-output (SU-MIMO) and multi-user multi-input multioutput (MU-MIMO) systems. There are two types of interference in SM MIMO systems, interantenna interference and multi-user interference (MUI). In order to improve SM MIMO system performance, channel precoding is used at the base station (BS). In this report, block diagonalization (BD) channel precoding is employed to reduce the MUI and decompose the MU-MIMO system into parallel SU-MIMO systems. Then, several detection techniques are used to detect the received signal and reduce the inter-antenna interference at each user. Simulation results are presented to evaluate and compare the bit error rate (BER) performance of SU-MIMO and MU-MIMO systems with zero-forcing (ZF), minimum mean square error (MMSE), ordered successive interference cancellation (OSIC), and maximum likelihood (ML) detection algorithms. Three modulation schemes, namely QPSK, 16 QAM and 64 QAM are considered. Further, the BER performance of MIMO systems in correlated channels is investigated using the exponential correlation model.en_US
dc.description.scholarlevelGraduateen_US
dc.identifier.urihttp://hdl.handle.net/1828/8836
dc.language.isoenen_US
dc.rightsAvailable to the World Wide Weben_US
dc.subjectSpatial multiplexing MIMO systemsen_US
dc.subjectsingle-user multi-input multi-output (SU-MIMO)en_US
dc.subjectinter-antenna interferenceen_US
dc.subjectordered successive interference cancellation (OSIC)en_US
dc.subjectmaximum likelihood (ML) detection techniquesen_US
dc.titleBlock Diagonalization Precoding and Signal Detection for Spatial Multiplexing MIMO Systemsen_US
dc.typeprojecten_US

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Different detection techniques for SM MIMO systems are compared in terms of their BER performance. MIMO systems with different numbers of antennas are evaluated, and three modulation schemes, namely QPSK, 16 QAM and 64 QAM, are considered. BD channel precoding is used to reduce the effect of MUI in MU-MIMO systems. Moreover, the BER performance of MIMO systems is investigated over correlated channels.
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