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On Preamble-Based C...
On Preamble-Based Channel Estimation in OFDM/OQAM Systems
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- Katselis, Dimitrios (författare)
- KTH,Reglerteknik,ACCESS Linnaeus Centre,System Identification Group
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- Bengtsson, Mats, 1967- (författare)
- KTH,Signalbehandling,ACCESS Linnaeus Centre
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- Rojas, Cristian R., 1980- (författare)
- KTH,Reglerteknik,ACCESS Linnaeus Centre,System Identification Group
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- Hjalmarsson, Håkan, 1962- (författare)
- KTH,Reglerteknik,ACCESS Linnaeus Centre,System Identification Group
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Kofidis, Eleftherios (författare)
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(creator_code:org_t)
- European Association for Signal and Image Processing, 2011
- 2011
- Engelska.
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Ingår i: Proceedings of the 19th European Signal Processing Conference (EUSIPCO 2011). - : European Association for Signal and Image Processing. ; , s. 1618-1622
- Relaterad länk:
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http://www.eurasip.o...
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https://urn.kb.se/re...
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Abstract
Ämnesord
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- In this paper, the problem of preamble-based channel estimation in OFDM offset QAM (OFDM/OQAM) systems under a deterministic channel assumption is studied. Recent results indicate that full (all tones carrying pilot symbols) preambles with equal pilot symbols are locally optimal, in the sense that they yield a local minimum of the mean square error (MSE) performance metric of the estimated channel frequency response (CFR), subject to a total training energy constraint. We study the problem of finding the globally optimal full preamble. We show that under a channel constancy assumption, the global optimum coincides with the full preamble of equal symbols. The same result holds even if the channel constancy assumption is removed. Numerical simulations are presented to support the derived results.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)