Impact of spatial correlation towards the performance of MIMO downlink transmissions

Rosdiadee Nordin, Mahamod Ismail

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

2 Citations (Scopus)

Abstract

There are two known MIMO transmission scheme in the wireless link-level research: Space-Time Coding (STC) and Spatial Multiplexing (SM). STC aims to achieve maximum antenna diversity and improve wireless link reliability, while SM, on the other hand provides a capability for increasing the data rate by higher spectral efficiencies, i.e. more bits/s/Hz of bandwidth. Most MIMO simulations consider ideal transmission spatial subchannels condition, whereby the fading correlation between each spatial subchannel is uncorrected with uniform Rayleigh's distribution. However, in a more realistic propagation environment, spatial correlation does exist between antenna pairs and affects the MIMO transmission link, resulting in reduced capacity and loss of Bits Error Rate (BER). The main aim of this paper is to investigate the effect of spatial interference due to spatially correlated MIMO subchannels by employing a dynamic subcarrier allocation, based on the Orthogonal Frequency Division Multiple Access (OFDMA) transmission scheme. Focus is given in the downlink path, since the Mobile Station (MS) is expected to benefit from the rich multiuser diversity gain given from the dynamic subcarrier allocation. From the simulation results, the BER performance between both the STC and SM scheme will be analyzed to further understand the limitation in transmission under different spatial correlation.

Original languageEnglish
Title of host publicationAPCC 2012 - 18th Asia-Pacific Conference on Communications: "Green and Smart Communications for IT Innovation"
Pages390-395
Number of pages6
DOIs
Publication statusPublished - 2012
Event18th Asia-Pacific Conference on Communications: "Green and Smart Communications for IT Innovation", APCC 2012 - Jeju Island
Duration: 15 Oct 201217 Oct 2012

Other

Other18th Asia-Pacific Conference on Communications: "Green and Smart Communications for IT Innovation", APCC 2012
CityJeju Island
Period15/10/1217/10/12

Fingerprint

MIMO systems
Multiplexing
Telecommunication links
Bit error rate
Antennas
Space research
Frequency division multiple access
Bandwidth

Keywords

  • correlated channel
  • dynamic subcarrier allocation
  • MIMO
  • self-interference
  • space-time coding
  • spatial multiplexing
  • spatial subchannel

ASJC Scopus subject areas

  • Computer Networks and Communications

Cite this

Nordin, R., & Ismail, M. (2012). Impact of spatial correlation towards the performance of MIMO downlink transmissions. In APCC 2012 - 18th Asia-Pacific Conference on Communications: "Green and Smart Communications for IT Innovation" (pp. 390-395). [6388167] https://doi.org/10.1109/APCC.2012.6388167

Impact of spatial correlation towards the performance of MIMO downlink transmissions. / Nordin, Rosdiadee; Ismail, Mahamod.

APCC 2012 - 18th Asia-Pacific Conference on Communications: "Green and Smart Communications for IT Innovation". 2012. p. 390-395 6388167.

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

Nordin, R & Ismail, M 2012, Impact of spatial correlation towards the performance of MIMO downlink transmissions. in APCC 2012 - 18th Asia-Pacific Conference on Communications: "Green and Smart Communications for IT Innovation"., 6388167, pp. 390-395, 18th Asia-Pacific Conference on Communications: "Green and Smart Communications for IT Innovation", APCC 2012, Jeju Island, 15/10/12. https://doi.org/10.1109/APCC.2012.6388167
Nordin R, Ismail M. Impact of spatial correlation towards the performance of MIMO downlink transmissions. In APCC 2012 - 18th Asia-Pacific Conference on Communications: "Green and Smart Communications for IT Innovation". 2012. p. 390-395. 6388167 https://doi.org/10.1109/APCC.2012.6388167
Nordin, Rosdiadee ; Ismail, Mahamod. / Impact of spatial correlation towards the performance of MIMO downlink transmissions. APCC 2012 - 18th Asia-Pacific Conference on Communications: "Green and Smart Communications for IT Innovation". 2012. pp. 390-395
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