A quasi-orthogonal group space-time architecture for higher diversity gains

Lin Dai, Sana Sfar, Khaled Letaief

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

Multiple-Input Multiple-Output (MIMO) systems can provide two kinds of gain: diversity gain and multiplexing gain. Most existing MIMO schemes, including space-time coding and layered space-time, aim at maximizing either of them. Therefore, it is desirable to design a scheme to get a better tradeoff between the multiplexing gain and diversity gain. In this paper, a novel Quasi-Orthogonal Group Space-Time (QoGST) architecture is proposed. In QoGST, the transmit stream is divided into several groups and all the groups are encoded via an inter-group space-time block encoder. Group interference suppression is adopted at the receiver. Performance is evaluated in terms of symmetric energy and it will be shown that compared to the Group Layered Space-Time (GLST) architecture, the proposed QoGST can achieve a higher symmetric energy and a better diversity-multiplexing tradeoff. Simulation results will validate our analysis and show that QoGST can achieve at least 3 dB gain over GLST at a FER of 10-3, for instance.

Original languageEnglish
Title of host publicationGLOBECOM'04 - IEEE Global Telecommunications Conference
Pages2931-2935
Number of pages5
Volume5
Publication statusPublished - 2004
Externally publishedYes
EventGLOBECOM'04 - IEEE Global Telecommunications Conference - Dallas, TX, United States
Duration: 29 Nov 20043 Dec 2004

Other

OtherGLOBECOM'04 - IEEE Global Telecommunications Conference
CountryUnited States
CityDallas, TX
Period29/11/043/12/04

Fingerprint

Multiplexing
Interference suppression

Keywords

  • Group detection
  • Layered space-time
  • MIMO systems
  • Quasi-orthogonal group space-time
  • Space-time block coding
  • Symmetric energy

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Dai, L., Sfar, S., & Letaief, K. (2004). A quasi-orthogonal group space-time architecture for higher diversity gains. In GLOBECOM'04 - IEEE Global Telecommunications Conference (Vol. 5, pp. 2931-2935)

A quasi-orthogonal group space-time architecture for higher diversity gains. / Dai, Lin; Sfar, Sana; Letaief, Khaled.

GLOBECOM'04 - IEEE Global Telecommunications Conference. Vol. 5 2004. p. 2931-2935.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Dai, L, Sfar, S & Letaief, K 2004, A quasi-orthogonal group space-time architecture for higher diversity gains. in GLOBECOM'04 - IEEE Global Telecommunications Conference. vol. 5, pp. 2931-2935, GLOBECOM'04 - IEEE Global Telecommunications Conference, Dallas, TX, United States, 29/11/04.
Dai L, Sfar S, Letaief K. A quasi-orthogonal group space-time architecture for higher diversity gains. In GLOBECOM'04 - IEEE Global Telecommunications Conference. Vol. 5. 2004. p. 2931-2935
Dai, Lin ; Sfar, Sana ; Letaief, Khaled. / A quasi-orthogonal group space-time architecture for higher diversity gains. GLOBECOM'04 - IEEE Global Telecommunications Conference. Vol. 5 2004. pp. 2931-2935
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