Bibliographische Detailangaben
Beteiligte: Et Tolba, Mohamed, Saoudi, Samir, Visoz, Raphaël, Ait-Idir, Tarik
In: Research Letters in Communications, 2009, 2009, S. 1-4
veröffentlicht:
Hindawi Limited
Medientyp: Artikel, E-Artikel

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Umfang: 1-4
ISSN: 1687-6741
1687-675X
DOI: 10.1155/2009/230276
veröffentlicht in: Research Letters in Communications
Sprache: Englisch
Schlagwörter:
Kollektion: Hindawi Limited (CrossRef)
Inhaltsangabe

<jats:p>Hybrid automatic repeat request (HARQ) is used in high-speed uplink packet access (HSUPA) to increase the data rate. Chase combining is the simplest of HARQ algorithms. It provides a time diversity and requires a small memory. In this paper, we propose a technique to increase the chase combining efficiency. In this method, HARQ transmissions are seen as additional receive antennas which are jointly combined at chip-level using a space-time linear minimum square error (LMMSE). We demonstrate that the chase combining diversity gain is considerably increased especially for high-order modulation.</jats:p>