Cramer-Rao bound based mean-squared error and throughput analysis of superimposed pilots for semi-blind multiple-input multiple-output wireless channel estimation.
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| Title: | Cramer-Rao bound based mean-squared error and throughput analysis of superimposed pilots for semi-blind multiple-input multiple-output wireless channel estimation. |
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| Authors: | Jagannatham, Aditya K.1, Rao, Bhaskar D.2 |
| Source: | International Journal of Communication Systems. Oct2014, Vol. 27 Issue 10, p1393-1415. 23p. |
| Subjects: | Mean square algorithms, Superimposed coding, MIMO systems, Wireless channels, Channel estimation, Performance evaluation |
| Abstract: | SUMMARY This work presents a study of the mean-squared error (MSE) and throughput performance of superimposed pilots (SP) for the estimation of a multiple-input multiple-output (MIMO) wireless channel. The Cramer-Rao bound (CRB) is derived for SP based estimation of the MIMO channel matrix. Employing the CRB analysis, it is proved that the asymptotic MSE bound is potentially 3 dB lower than the MSE performance of the existing SP mean based estimation (SPME) schemes. Motivated by this observation, a novel SP semi-blind scheme is presented for MIMO channel estimation. This scheme asymptotically achieves the CRB and hence has a lower MSE of estimation when compared with SPME schemes. We also derive closed form expressions for the optimal source-pilot power allocation in SP by maximizing the post-processing signal-to-noise power ratio at the receiver. In the final part, a new result is presented for the worst-case capacity of a communication channel with correlated information symbols and noise. This framework is employed to quantify the throughput performance of SP and also to demonstrate the bandwidth efficiency of SP compared with that of a conventional pilot based system. Copyright © 2012 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR] |
| Copyright of International Journal of Communication Systems is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 99086761 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Cramer-Rao bound based mean-squared error and throughput analysis of superimposed pilots for semi-blind multiple-input multiple-output wireless channel estimation. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Jagannatham%2C+Aditya+K%2E%22">Jagannatham, Aditya K.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Rao%2C+Bhaskar+D%2E%22">Rao, Bhaskar D.</searchLink><relatesTo>2</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Communication+Systems%22">International Journal of Communication Systems</searchLink>. Oct2014, Vol. 27 Issue 10, p1393-1415. 23p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Mean+square+algorithms%22">Mean square algorithms</searchLink><br /><searchLink fieldCode="DE" term="%22Superimposed+coding%22">Superimposed coding</searchLink><br /><searchLink fieldCode="DE" term="%22MIMO+systems%22">MIMO systems</searchLink><br /><searchLink fieldCode="DE" term="%22Wireless+channels%22">Wireless channels</searchLink><br /><searchLink fieldCode="DE" term="%22Channel+estimation%22">Channel estimation</searchLink><br /><searchLink fieldCode="DE" term="%22Performance+evaluation%22">Performance evaluation</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: SUMMARY This work presents a study of the mean-squared error (MSE) and throughput performance of superimposed pilots (SP) for the estimation of a multiple-input multiple-output (MIMO) wireless channel. The Cramer-Rao bound (CRB) is derived for SP based estimation of the MIMO channel matrix. Employing the CRB analysis, it is proved that the asymptotic MSE bound is potentially 3 dB lower than the MSE performance of the existing SP mean based estimation (SPME) schemes. Motivated by this observation, a novel SP semi-blind scheme is presented for MIMO channel estimation. This scheme asymptotically achieves the CRB and hence has a lower MSE of estimation when compared with SPME schemes. We also derive closed form expressions for the optimal source-pilot power allocation in SP by maximizing the post-processing signal-to-noise power ratio at the receiver. In the final part, a new result is presented for the worst-case capacity of a communication channel with correlated information symbols and noise. This framework is employed to quantify the throughput performance of SP and also to demonstrate the bandwidth efficiency of SP compared with that of a conventional pilot based system. Copyright © 2012 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of International Journal of Communication Systems is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1002/dac.2403 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 23 StartPage: 1393 Subjects: – SubjectFull: Mean square algorithms Type: general – SubjectFull: Superimposed coding Type: general – SubjectFull: MIMO systems Type: general – SubjectFull: Wireless channels Type: general – SubjectFull: Channel estimation Type: general – SubjectFull: Performance evaluation Type: general Titles: – TitleFull: Cramer-Rao bound based mean-squared error and throughput analysis of superimposed pilots for semi-blind multiple-input multiple-output wireless channel estimation. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Jagannatham, Aditya K. – PersonEntity: Name: NameFull: Rao, Bhaskar D. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2014 Type: published Y: 2014 Identifiers: – Type: issn-print Value: 10745351 Numbering: – Type: volume Value: 27 – Type: issue Value: 10 Titles: – TitleFull: International Journal of Communication Systems Type: main |
| ResultId | 1 |
