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Differential space-code modulation for interference suppression
Department of Electrical and Computer Engineering, University of Florida, USA.
Department of Electrical and Computer Engineering, University of Florida, USA.
Department of Electrical and Computer Engineering, Stevens Institute of Technology, USA.
Department of Electrical and Computer Engineering, University of Florida, USA.ORCID-id: 0000-0002-7599-4367
2001 (Engelska)Ingår i: IEEE Transactions on Signal Processing, ISSN 1053-587X, E-ISSN 1941-0476, Vol. 49, nr 8, s. 1786-1795Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Space-time coding has been receiving much attention due to its potentials offered by fully exploiting the spatial and temporal diversities of multiple transmit and receive antennas. A differential space-time modulation (DSTM) scheme was previously proposed for demodulation without channel state information, which is attractive in fast fading channels where accurate channel estimates are difficult to obtain. However, this technique is sensitive to interference and is likely to deteriorate or even break down in a wireless environment, where interference (including intentional and unintentional jamming) signals exist. We propose a new coding and modulation scheme, referred to as the differential space-code modulation (DSCM), which is interference resistant. Our focus is on single-user communications. We show that DSCM outperforms DSTM significantly when interference is present. This advantage is achieved at the cost of a lower data rate or a wider bandwidth or a combination of both. To alleviate this problem, a high-rate DSCM (HR-DSCM) scheme is also presented, which increases the data rate considerably at the cost of a slightly higher bit-error rate (BER), while still maintaining the interference suppression capability.

Ort, förlag, år, upplaga, sidor
2001. Vol. 49, nr 8, s. 1786-1795
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URN: urn:nbn:se:liu:diva-77142DOI: 10.1109/78.934149OAI: oai:DiVA.org:liu-77142DiVA, id: diva2:525174
Tillgänglig från: 2012-05-07 Skapad: 2012-05-07 Senast uppdaterad: 2017-12-07Bibliografiskt granskad

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