File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Conference Paper: Performance analysis of space-time codes with channel information errors

TitlePerformance analysis of space-time codes with channel information errors
Authors
KeywordsTransportation
Automobiles
Issue Date2004
PublisherIEEE.
Citation
Ieee Vehicular Technology Conference, 2004, v. 60 n. 4, p. 2399-2403 How to Cite?
AbstractMany space-time codes (STC) have been proposed to enhance the performance of wireless communications in flat fading channels. All of them rely on the knowledge of the channel, and are hence affected by the channel estimation errors. Most previous research on STC performance evaluation assume perfect channel information. In this paper, we investigate STC robustness under imperfect channel knowledge. We first define the concept of "closeness" by comparing the BER under channel estimation errors with that of perfect channel knowledge, aiming to characterize STC performance degradation due to imperfect channel knowledge. Then the robustness of STC can be compared by their "closeness" to perfect results. In our computer simulations, we apply the same channel estimator to different STCs in Orthogonal Frequency Division Multiplexing (OFDM) communication systems. We find that for systems with two and three transmit antennas, the space time block codes (STBC) are always more robust to channel estimation errors than space time trellis codes (STTC). With the increase of receive diversity, all STCs become more robust to the channel estimation errors. For STTC, as the number of trellis states increases, the codes become less robust to the channel estimation errors. We also compare the BER performance of STC in the presence of channel estimation errors. For the two-transmit-antenna system, the performance of STBC is always better than that of the 4-state STTC, but is always worse than 16-state STTC. For systems with three transmit antennas, the BER performance of STTC is much better than that of STBC. © 2004 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/45810
ISSN
References

 

DC FieldValueLanguage
dc.contributor.authorDiao, Zen_HK
dc.contributor.authorShen, Den_HK
dc.contributor.authorLi, VOKen_HK
dc.date.accessioned2007-10-30T06:36:01Z-
dc.date.available2007-10-30T06:36:01Z-
dc.date.issued2004en_HK
dc.identifier.citationIeee Vehicular Technology Conference, 2004, v. 60 n. 4, p. 2399-2403en_HK
dc.identifier.issn1550-2252en_HK
dc.identifier.urihttp://hdl.handle.net/10722/45810-
dc.description.abstractMany space-time codes (STC) have been proposed to enhance the performance of wireless communications in flat fading channels. All of them rely on the knowledge of the channel, and are hence affected by the channel estimation errors. Most previous research on STC performance evaluation assume perfect channel information. In this paper, we investigate STC robustness under imperfect channel knowledge. We first define the concept of "closeness" by comparing the BER under channel estimation errors with that of perfect channel knowledge, aiming to characterize STC performance degradation due to imperfect channel knowledge. Then the robustness of STC can be compared by their "closeness" to perfect results. In our computer simulations, we apply the same channel estimator to different STCs in Orthogonal Frequency Division Multiplexing (OFDM) communication systems. We find that for systems with two and three transmit antennas, the space time block codes (STBC) are always more robust to channel estimation errors than space time trellis codes (STTC). With the increase of receive diversity, all STCs become more robust to the channel estimation errors. For STTC, as the number of trellis states increases, the codes become less robust to the channel estimation errors. We also compare the BER performance of STC in the presence of channel estimation errors. For the two-transmit-antenna system, the performance of STBC is always better than that of the 4-state STTC, but is always worse than 16-state STTC. For systems with three transmit antennas, the BER performance of STTC is much better than that of STBC. © 2004 IEEE.en_HK
dc.format.extent533780 bytes-
dc.format.extent4152649 bytes-
dc.format.extent23319 bytes-
dc.format.extent5489 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.relation.ispartofIEEE Vehicular Technology Conferenceen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©2004 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.en_HK
dc.subjectTransportationen_HK
dc.subjectAutomobilesen_HK
dc.titlePerformance analysis of space-time codes with channel information errorsen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1550-2252&volume=4&spage=2399&epage=2403&date=2004&atitle=Performance+analysis+of+space-time+codes+with+channel+information+errorsen_HK
dc.identifier.emailLi, VOK:vli@eee.hku.hken_HK
dc.identifier.authorityLi, VOK=rp00150en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/VETECF.2004.1400483en_HK
dc.identifier.scopuseid_2-s2.0-17144372211en_HK
dc.identifier.hkuros105420-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-17144372211&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume60en_HK
dc.identifier.issue4en_HK
dc.identifier.spage2399en_HK
dc.identifier.epage2403en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridDiao, Z=8415199800en_HK
dc.identifier.scopusauthoridShen, D=7401738166en_HK
dc.identifier.scopusauthoridLi, VOK=7202621685en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats