Change search
ReferencesLink to record
Permanent link

Direct link
Some Preamble Design Aspects in CP-OFDM Systems
KTH, School of Electrical Engineering (EES), Signal Processing.
2012 (English)In: IEEE Communications Letters, ISSN 1089-7798, Vol. 16, no 3, 356-359 p.Article in journal (Refereed) Published
Abstract [en]

A fundamental problem in training-based channel estimation for various communication systems is the preamble design. Two crucial aspects in such a design are the achievable mean square error (MSE) and the corresponding peak-to-average power ratio (PAPR). In this letter, preamble-based least squares (LS) channel estimation in CP-OFDM systems is considered. Ignoring the PAPR aspect, several MSE-optimal preambles and a necessary condition for their existence are presented. To this end, a training energy constraint, containing also the energy spent to the cyclic prefix (CP), is imposed. This constraint differs from the usual training energy constraints in the existing literature, which ignore the CP energy during training. These preambles contribute in the completion of existing results concerning MSE-optimal preambles in CP-OFDM systems. However, since high PAPR is an issue concerning these optimal designs, we show how these MSE-optimal preambles can be combined with the usual Zadoff-Chu (ZC) sequences to enlarge the class of PAPR-optimal preambles that achieve good MSE performance at the same time.

Place, publisher, year, edition, pages
2012. Vol. 16, no 3, 356-359 p.
Keyword [en]
Cyclic prefix, least squares, orthogonal frequency division multiplexing (OFDM), preamble, Zadoff-Chu sequences
National Category
Signal Processing
URN: urn:nbn:se:kth:diva-77803DOI: 10.1109/LCOMM.2012.010512.112260ISI: 000301507700022ScopusID: 2-s2.0-84858342215OAI: diva2:492076
Swedish Research Council, 621-2010-5819ICT - The Next Generation

QC 20120411

Available from: 2012-02-07 Created: 2012-02-07 Last updated: 2013-04-11Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Katselis, Dimitrios
By organisation
Signal Processing
In the same journal
IEEE Communications Letters
Signal Processing

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 125 hits
ReferencesLink to record
Permanent link

Direct link