Computationally efficient block diagonalization for downlink multiuser MIMO-OFDM systems Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/zp38wg072

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • One of the key challenges in downlink multiuser multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems is the mitigation of the multi-access interference when different users share the same subcarriers. In this work, the block diagonalization (BD) algorithm for inter-user interference pre-cancelation is extended to MIMO-OFDM systems. However, in the context of OFDM, the complexity of the algorithm grows proportionally to the number of OFDM subcarriers. To address this issue, the inherent frequency correlation between adjacent subcarriers is exploited. Simulations show that interpolation of the BD pre/decoding matrices provides a favorable tradeoff between complexity and performance. Specifically, a 50% reduction in computational load is achieved for less than 5% throughput loss and 1 dB error performance penalty at high SNR.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Keyword
Subject
Rights Statement
Language
Replaces
Additional Information
  • description.provenance : Submitted by Samia El Amrani (elamrans@onid.orst.edu) on 2010-06-18T18:36:27Z No. of bitstreams: 1 ElAmraniSamia2011.pdf: 1026977 bytes, checksum: d109494d97095c59c080c5a3a61934af (MD5)
  • description.provenance : Made available in DSpace on 2010-07-19T17:44:53Z (GMT). No. of bitstreams: 1 ElAmraniSamia2011.pdf: 1026977 bytes, checksum: d109494d97095c59c080c5a3a61934af (MD5)
  • description.provenance : Approved for entry into archive by Laura Wilson(laura.wilson@oregonstate.edu) on 2010-07-19T17:44:52Z (GMT) No. of bitstreams: 1 ElAmraniSamia2011.pdf: 1026977 bytes, checksum: d109494d97095c59c080c5a3a61934af (MD5)
  • description.provenance : Approved for entry into archive by Julie Kurtz(julie.kurtz@oregonstate.edu) on 2010-06-18T20:04:16Z (GMT) No. of bitstreams: 1 ElAmraniSamia2011.pdf: 1026977 bytes, checksum: d109494d97095c59c080c5a3a61934af (MD5)

Relationships

In Administrative Set:
Last modified: 08/08/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items