Effective capacity of multiple antenna channels: Correlation and keyhole

Caijun Zhong, Tharm Ratnarajah, Kaikit Wong, Mohamed-Slim Alouini

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


In this study, the authors derive the effective capacity limits for multiple antenna channels which quantify the maximum achievable rate with consideration of link-layer delay-bound violation probability. Both correlated multiple-input single-output and multiple-input multiple-output keyhole channels are studied. Based on the closed-form exact expressions for the effective capacity of both channels, the authors look into the asymptotic high and low signal-to-noise ratio regimes, and derive simple expressions to gain more insights. The impact of spatial correlation on effective capacity is also characterised with the aid of a majorisation theory result. It is revealed that antenna correlation reduces the effective capacity of the channels and a stringent quality-of-service requirement causes a severe reduction in the effective capacity but can be alleviated by increasing the number of antennas. © 2012 The Institution of Engineering and Technology.
Original languageEnglish (US)
Pages (from-to)1757
JournalIET Communications
Issue number12
StatePublished - 2012

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering


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