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dc.contributor.advisorMurthy, Chandra R
dc.contributor.authorBharath, B N
dc.date.accessioned2018-04-02T16:50:49Z
dc.date.accessioned2018-07-31T04:49:20Z
dc.date.available2018-04-02T16:50:49Z
dc.date.available2018-07-31T04:49:20Z
dc.date.issued2018-04-02
dc.date.submitted2013
dc.identifier.urihttps://etd.iisc.ac.in/handle/2005/3315
dc.identifier.abstracthttp://etd.iisc.ac.in/static/etd/abstracts/4179/G25681-Abs.pdfen_US
dc.description.abstractMultiple-Input Multiple-Output (MIMO) communication using multiple antennas has received significant attention in recent years, both in the academia and industry, as they offer additional spatial dimensions for high-rate and reliable communication, without expending valuable bandwidth. However, exploiting these promised benefits of MIMO systems critically depends on fast and accurate acquisition of Channel State Information (CSI) at the Receiver (CSIR) and the Transmitter (CSIT). In Time Division Duplex (TDD) MIMO systems, where the forward channel and the reverse channel are the same, it is possible to exploit this reciprocity to reduce the overhead involved in acquiring CSI, both in terms of training duration and power. Further, many popular and efficient transmission schemes such as beam forming, spatial multiplexing over dominant channel modes, etc. do not require full CSI at the transmitter. In such cases, it is possible to reduce the Reverse Channel Training (RCT) overhead by only learning the part of the channel that is required for data transmission at the transmitter. In this thesis, we propose and analyze several novel channel-dependent RCT schemes for MIMO systems and analyze their performance in terms of (a) the mean-square error in the channel estimate, (b) lower bounds on the capacity, and (c) the diversity-multiplexing gain tradeoff. We show that the proposed training schemes offer significant performance improvement relative to conventional channel-agnostic RCT schemes. The main take-home messages from this thesis are as follows: • Exploiting CSI while designing the RCT sequence improves the performance. • The training sequence should be designed so as to convey only the part of the CSI required for data transmission by the transmitter. • Power-controlled RCT, when feasible, significantly outperforms fixed power RCT.en_US
dc.language.isoen_USen_US
dc.relation.ispartofseriesG25681en_US
dc.subjectWireless Channel Modelen_US
dc.subjectMultiple-Input Multiple-Outoput (MIMO) Communicationen_US
dc.subjectMimo Systems - Reverse Channel Traniningen_US
dc.subjectReverse Channel Trainingen_US
dc.subjectTime Division Duplex-Single-Input Multiple-Output Systems (TDD-SIMO Systems)en_US
dc.subjectMultiple Antenna Systems - Reverse Channel Trainingen_US
dc.subjectMultiple Antenna Time Division Duplex Systemsen_US
dc.subjectMulti-user Time Division Duplex MIMO Systemsen_US
dc.subjectReciprocal Multiple Antenna Systemsen_US
dc.subjectSingle-Input Multiple-Output(SIMO) Systemen_US
dc.subjectReverse Channel Training (RCT)en_US
dc.subjectTDD-SIMO Systemsen_US
dc.subjectMultiple Antenna Systemsen_US
dc.subject.classificationCommunication Engineeringen_US
dc.titleReverse Channel Training in Multiple Antenna Time Division Duplex Systemsen_US
dc.typeThesisen_US
dc.degree.namePhDen_US
dc.degree.levelDoctoralen_US
dc.degree.disciplineFaculty of Engineeringen_US


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