[논문]Channel Capacity Maximization in a Distorted 2×2 LOS MIMO Link

Ko, In-Chang; Park, Hyung-Chul

doi:10.6109/jicce.2018.16.2.72

Channel Capacity Maximization in a Distorted 2×2 LOS MIMO Link 원문보기

Journal of information and communication convergence engineering, v.16 no.2, 2018년, pp.72 - 77

Ko, In-Chang (Department of Interdisciplinary Bio IT Materials, Seoul National University of Science and Technology) , Park, Hyung-Chul (Department of Electronic and IT Media Engineering, Seoul National University of Science and Technology)

Abstract ▼ AI-Helper

This paper presents a novel channel capacity maximization method for a distorted $2{\times}2$ line-of-sight (LOS) multiple-input multiple-output (MIMO) link. A LOS MIMO link may be distorted by the influence of environmental factors such that the channel capacity of the LOS MIMO link may be degraded. By using the proposed method, the channel capacity of a distorted $2{\times}2$ LOS MIMO link can be the same as that of the ideal $2{\times}2$ LOS MIMO link. The proposed method employs an additional receiver antenna to maximize the channel capacity. In contrast to a $3{\times}2$ LOS MIMO link, a receiver circuit for a third receiving antenna is not necessary. Hence, the receiver for the proposed method is much simpler than that for a $3{\times}2$ LOS MIMO link. We determine the optimal position of the additional receiver antenna analytically. Simulation results show that the channel capacity can approach the ideal using the proposed method.

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제안 방법

In this paper, we presented a channel capacity maximization method for a distorted 2×2 LOS MIMO link by adding only an additional receiver antenna.
The proposed method improves the channel capacity of a distorted 2×2 LOS MIMO link up to that of an ideal 2×2 LOS MIMO link by adding only a combiner and a receiver antenna without a receiver.
4, the Rx₃ antenna denotes an additional antenna. There is no change in the receiver circuit because the proposed method combines the received signal at the rotated antenna, Rx_{1_shift} , and the received signal at the Rx₃antenna using an RF combiner. To maximize the channel capacity, the optimal position of the Rx₃antenna must be determined analytically.
To evaluate the performance of the proposed method, we set D, the carrier frequency f_c , and the signal-to-noise ratio (SNR) to 4 m, 30 GHz, and 20 dB, respectively [15]. Fig.

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