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Conference Paper: Optimal power allocation for channel estimation in MIMO-OFCDM systems

TitleOptimal power allocation for channel estimation in MIMO-OFCDM systems
Authors
Issue Date2008
PublisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000091
Citation
The IEEE Asia-Pacific Conference on Circuits and Systems (APCCAS 2008), Macao, China, 30 November-3 December 2008. In Proceedings of IEEE APCCAS, 2008, p. 822-825 How to Cite?
AbstractThis paper investigates the power allocation in orthogonal frequency and code division multiplexing (OFCDM) systems with multiple input multiple output (MEMO) multiplexing (MIMO-OFCDM). Since time-multiplexed pilot channels are employed for channel estimation, the total transmission power should be properly assigned to the pilot and data channels to achieve the best performance. By minimizing the mean square error (MSE) during signal detection, a closed form expression is derived for the optimal power ratio between the pilot and data channels. It is shown that the optimal power ratio is mainly decided by the number of transmit antennas and the number of pilot and data symbols in a packet, while it is not sensitive to other system parameters like signal-to-noise ratio (SNR) and the frequency domain spreading factor. Simulations demonstrate the accuracy of the derived optimal power ratio. © 2008 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/158576
References

 

DC FieldValueLanguage
dc.contributor.authorZhou, Yen_US
dc.contributor.authorNg, TSen_US
dc.date.accessioned2012-08-08T09:00:19Z-
dc.date.available2012-08-08T09:00:19Z-
dc.date.issued2008en_US
dc.identifier.citationThe IEEE Asia-Pacific Conference on Circuits and Systems (APCCAS 2008), Macao, China, 30 November-3 December 2008. In Proceedings of IEEE APCCAS, 2008, p. 822-825en_US
dc.identifier.urihttp://hdl.handle.net/10722/158576-
dc.description.abstractThis paper investigates the power allocation in orthogonal frequency and code division multiplexing (OFCDM) systems with multiple input multiple output (MEMO) multiplexing (MIMO-OFCDM). Since time-multiplexed pilot channels are employed for channel estimation, the total transmission power should be properly assigned to the pilot and data channels to achieve the best performance. By minimizing the mean square error (MSE) during signal detection, a closed form expression is derived for the optimal power ratio between the pilot and data channels. It is shown that the optimal power ratio is mainly decided by the number of transmit antennas and the number of pilot and data symbols in a packet, while it is not sensitive to other system parameters like signal-to-noise ratio (SNR) and the frequency domain spreading factor. Simulations demonstrate the accuracy of the derived optimal power ratio. © 2008 IEEE.en_US
dc.languageengen_US
dc.publisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000091-
dc.relation.ispartofIEEE Asia-Pacific Conference on Circuits and Systems Proceedingsen_US
dc.rightsIEEE Asia-Pacific Conference on Circuits and Systems Proceedings. Copyright © IEEE.-
dc.rights©2008 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.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleOptimal power allocation for channel estimation in MIMO-OFCDM systemsen_US
dc.typeConference_Paperen_US
dc.identifier.emailZhou, Y:yqzhou@eee.hku.hken_US
dc.identifier.emailNg, TS:tsng@eee.hku.hken_US
dc.identifier.authorityZhou, Y=rp00214en_US
dc.identifier.authorityNg, TS=rp00159en_US
dc.description.naturepublished_or_final_versionen_US
dc.identifier.doi10.1109/APCCAS.2008.4746149en_US
dc.identifier.scopuseid_2-s2.0-62949144798en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-62949144798&selection=ref&src=s&origin=recordpageen_US
dc.identifier.spage822en_US
dc.identifier.epage825en_US
dc.identifier.scopusauthoridZhou, Y=7405367062en_US
dc.identifier.scopusauthoridNg, TS=7402229975en_US

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