Change search
ReferencesLink to record
Permanent link

Direct link
The Outage Performance of Realtime Transmission in Multiple Asynchronous Relays Enhanced OFDM System
2013 (English)In: Computing, Networking and Communications (ICNC), 2013 International Conference on, IEEE conference proceedings, 2013, 283-289 p.Conference paper (Refereed)
Abstract [en]

This paper1 considers the outage performance of multiple relays transmission in Orthogonal Frequency Division Multiplexing (OFDM) systems. Relaying has been suggested in general to improve the reliability of wireless systems significantly and is therefore a candidate for wireless industrial communication systems that need to meet tough latency and outage requirements. Different from previous works, this paper takes synchronization mismatch of hardware processing time at multiple relays into account and characterizes the performance impact of such asynchronous relays on the reliability of the system. We focus especially on the case where the transceivers do not have instantaneous channel state information but still need to fullfill tough reliability and latency constraints. We find that with respect to this scenario the synchronization mismatch can lead to a significant loss of reliability even if the individual mismatch of relays is relatively small compared to the cyclic prefix of the OFDM symbol. Consequently, this paper devises countermeasures to efficiently combat the synchronization issues either by introducing a longer cyclic prefix or by decreasing/adjusting the number of active relays. We find that all proposed countermeasures have their application domains which are determined by the average SNR and the severity of synchronization errors.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2013. 283-289 p.
National Category
Communication Systems Telecommunications
URN: urn:nbn:se:kth:diva-136859DOI: 10.1109/ICCNC.2013.6504096ScopusID: 2-s2.0-84877627723ISBN: 978-1-4673-5286-4OAI: diva2:677341
IEEE Workshop on Computing, Networking and Communications,28-31 Jan. 2013,San Diego, CA

QC 20140102

Available from: 2013-12-09 Created: 2013-12-09 Last updated: 2014-01-02Bibliographically approved

Open Access in DiVA

fulltext(274 kB)43 downloads
File information
File name FULLTEXT01.pdfFile size 274 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Other links

Publisher's full textScopusIEEEXplore

Search in DiVA

By author/editor
Gross, James
Communication SystemsTelecommunications

Search outside of DiVA

GoogleGoogle Scholar
Total: 43 downloads
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: 51 hits
ReferencesLink to record
Permanent link

Direct link