Concatenation of Space-Time Block Codes with ConvolutionalCodes
| dc.contributor.author | Ali, Saajed | en |
| dc.contributor.committeechair | Woerner, Brian D. | en |
| dc.contributor.committeemember | Kachroo, Pushkin | en |
| dc.contributor.committeemember | Tranter, William H. | en |
| dc.contributor.department | Electrical and Computer Engineering | en |
| dc.date.accessioned | 2011-08-06T14:45:44Z | en |
| dc.date.adate | 2004-02-27 | en |
| dc.date.available | 2011-08-06T14:45:44Z | en |
| dc.date.issued | 2004-02-12 | en |
| dc.date.rdate | 2007-02-27 | en |
| dc.date.sdate | 2004-02-18 | en |
| dc.description.abstract | Multiple antennas help in combating the destructive effects of fading as well as improve the spectral efficiency of a communication system. Receive diversity techniques like maximal ratio receive combining have been popular means of introducing multiple antennas into communication systems. Space-time block codes present a way of introducing transmit diversity into the communication system with similar complexity and performance as maximal ratio receive combining. In this thesis we study the performance of space-time block codes in Rayleigh fading channel. In particular, the quasi-static assumption on the fading channel is removed to study how the space-time block coded system behaves in fast fading. In this context, the complexity versus performance trade-off for a space-time block coded receiver is studied. As a means to improve the performance of space-time block coded systems concatenation by convolutional codes is introduced. The improvement in the diversity order by the introduction of convolutional codes into the space-time block coded system is discussed. A general analytic expression for the error performance of a space-time block coded system is derived. This expression is utilized to obtain general expressions for the error performance of convolutionally concatenated space-time block coded systems utilizing both hard and soft decision decoding. Simulation results are presented and are compared with the analytical results. | en |
| dc.description.degree | Master of Science | en |
| dc.format.medium | ETD | en |
| dc.identifier.other | etd-02182004-133334 | en |
| dc.identifier.sourceurl | http://scholar.lib.vt.edu/theses/available/etd-02182004-133334 | en |
| dc.identifier.uri | http://hdl.handle.net/10919/9724 | en |
| dc.publisher | Virginia Tech | en |
| dc.relation.haspart | ETD.pdf | en |
| dc.rights | In Copyright | en |
| dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | en |
| dc.subject | Rayleigh fading | en |
| dc.subject | convolutional codes | en |
| dc.subject | transmit-diversity | en |
| dc.subject | space-time codes | en |
| dc.title | Concatenation of Space-Time Block Codes with ConvolutionalCodes | en |
| dc.type | Thesis | en |
| thesis.degree.discipline | Electrical and Computer Engineering | en |
| thesis.degree.grantor | Virginia Polytechnic Institute and State University | en |
| thesis.degree.level | masters | en |
| thesis.degree.name | Master of Science | en |
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