Convergence of complex multi-variables based on fading channels in multi-antenna communication systems
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DOI:
https://doi.org/10.15625/2525-2518/21965Keywords:
wireless communication, MIMO, multi-antenna, fading channelsAbstract
This work introduces approximate expressions and provides comprehensive simulation results to demonstrate the robust convergence of complex variables based on fading channels in multi-antenna communication systems, in which two separate scenarios, namely spatial signal processing and non-spatial signal processing scenarios, were evaluated. Numerical results prove our assertions that for Nakagami-m and Rician fading channels (or can be extended to any other complex fading channels) in multi-antenna systems with antenna numbers larger than two, the distribution of interference from the beamforming design, a typical example for spatial signal processing, and will strongly converge to an exponential distribution with the scale-parameter remaining the same. Meanwhile, the channel synthesis in the non-spatial signal processing scenario tends to an exponential distribution with a new scale parameter exactly equal to the product of the number of antennas and the scale parameter.
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