Effective capacity of multiple antenna channels: Correlation and keyhole
KAUST DepartmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Communication Theory Lab
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AbstractIn 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.
SponsorsThe work of Caijun Zhong was supported by the Fundamental Research Funds for the Central Universities (2012QNA5011) and the Zhejiang Provincial Natural Science Foundation of China (No. LQ12F01006, No. LR12F01002 and No. Y1110368), the work of T. Ratnarajah was supported by the U.K. Engineering and Physical Sciences Research Council under Grant EP/G026092/1 and also by the Future and Emerging Technologies (FET) Programme within the Seventh Framework Programme for Research of the European Commission under FET-Open Grant CROWN-233843.