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Capacity Performance of Polarized Distributed MIMO System on Rician Channel

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Abstract

The analytical upper bound and lower bound on the ergodic capacity of polarized distributed antenna system and their relation with antenna polarization on Rician channel are deduced by applying properties of complex non-central Wishart matrices and matrix-variate non-central quadratic forms. Compared to the related studies, our analysis is extended to account for the polarized distributed system with Rician fading where a line-of-sight component exists and both ends are affected by spatial correlation. The antenna polarization has some impacts on the capacity bounds according to the expressions of capacity bounds. Both the transmitter and the receiver are equipped with multiple polarization antennas, and the transmitters are of linear layout. A power allocation scheme based on the path loss fading is presented by maximizing the capacity upper bound. The power allocation scheme is feedback efficient compared with those power allocation schemes based on statistical parameters of the channel which need a large amount of feedback. In the simulations, the ergodic capacity of polarized distributed MIMO is analyzed. Comparisons are taken on the effects of angle spread, Rician factor and power on the ergodic capacity. The proposed power allocation scheme is superior to the equal power allocation scheme and has very close performance to the optimal power allocation scheme.

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Authors and Affiliations

  1. Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China

    Wei Lu, Yingzhuang Liu & Desheng Wang

Authors
  1. Wei Lu
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  2. Yingzhuang Liu
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  3. Desheng Wang
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Correspondence to Desheng Wang.

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Lu, W., Liu, Y. & Wang, D. Capacity Performance of Polarized Distributed MIMO System on Rician Channel. Wireless Pers Commun 68, 1047–1066 (2013). https://doi.org/10.1007/s11277-011-0498-x

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  • DOI: https://doi.org/10.1007/s11277-011-0498-x

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