Leveraging coherent distributed space-time codes for noncoherent communication in relay networks via training

For point to point multiple input multiple output systems, Dayal-Brehler-Varanasi have proved that training codes achieve the same diversity order as that of the underlying coherent space time block code (STBC) if a simple minimum mean squared error estimate of the channel formed using the training...

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Vydáno v:	IEEE transactions on wireless communications Ročník 8; číslo 2; s. 683 - 688
Hlavní autoři:	Rajan, G. Susinder, Rajan, B. Sundar
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	New York, NY IEEE 01.02.2009 Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:	Applied sciences Audio frequencies Block codes Channel estimation Channels Coding, codes Coherence Cooperative diversity Councils Decoding Detection, estimation, filtering, equalization, prediction Digital relays distributed space time block code Exact sciences and technology Fading Information, signal and communications theory Maximum likelihood detection MIMO Multiplexing noncoherent communication OFDM Orthogonal Frequency Division Multiplexing Relay networks Signal and communications theory Signal, noise Space time codes Strategy Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Training Transmission and modulation (techniques and equipments) Performance evaluation MIMO system Block code Space-time codes Parameter estimation Relay Diversity training Coherent detection Mean square error Learning noncoherent communication Cooperative diversity Simulation distributed space time block code Channel estimation Telecommunication network Orthogonal frequency division multiplexing
ISSN:	1536-1276, 1558-2248
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Popis
Shrnutí:	For point to point multiple input multiple output systems, Dayal-Brehler-Varanasi have proved that training codes achieve the same diversity order as that of the underlying coherent space time block code (STBC) if a simple minimum mean squared error estimate of the channel formed using the training part is employed for coherent detection of the underlying STBC. In this letter, a similar strategy involving a combination of training, channel estimation and detection in conjunction with existing coherent distributed STBCs is proposed for noncoherent communication in amplify-and-forward (AF) relay networks. Simulation results show that the proposed simple strategy outperforms distributed differential space-time coding for AF relay networks. Finally, the proposed strategy is extended to asynchronous relay networks using orthogonal frequency division multiplexing.
Bibliografie:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 14 content type line 23
ISSN:	1536-1276 1558-2248
DOI:	10.1109/TWC.2009.080545