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Article
3D UAV placement and user association in software-defined cellular networks
With the onset of unexpected or temporary problems resulting in degraded user performance, the flexibility and elasticity requirements of future cellular networks may not be fully satisfied by fixed ground bas...
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Article
Open AccessA limited feedback scheme for massive MIMO systems based on principal component analysis
Massive multiple-input multiple-output (MIMO) is becoming a key technology for future 5G cellular networks. Channel feedback for massive MIMO is challenging due to the substantially increased dimension of the ...
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Article
Bit-Error Probability of Asynchronous Multicode DS-CDMA Systems in Rayleigh Fading
A precise bit-error probability analysis method for multicode DS-CDMA systems in Rayleigh fading is derived. The proposed method applies to a multicode DS-CDMA system with an arbitrary number of multiple code ...
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Article
On monotonicity of the hypersphere volume and area
Motivated by reference [6] and applications in signal processing for communications systems, in this note, we obtain the dimension of maximum volume and the dimension of maximum surface area for the hyperspher...
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Chapter
Average Level Crossing Rate and Average Fade Duration of Diversity Methods
The analytical expressions of average level crossing rate (LCR) and average fade duration (AFD) of the output signal of a diversity combiner are presented in this paper. Exact, closed-form results are obtained...
