Capacity Loss Due to Polarization-Mismatch and Space-Correlation on MISO Channel
- Authors
- Joung, Heejin; Jo, Han-Shin; Mun, Cheol; Yook, Jong-Gwan
- Issue Date
- Apr-2014
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Polarization-mismatch; space-correlation; capacity loss; MISO channel; large-scale antenna arrays; small cell
- Citation
- IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, v.13, no.4, pp.2124 - 2136
- Indexed
- SCIE
- Journal Title
- IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
- Volume
- 13
- Number
- 4
- Start Page
- 2124
- End Page
- 2136
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/192890
- DOI
- 10.1109/TWC.2014.031314.131079
- ISSN
- 1536-1276
- Abstract
- This paper analyzes the effects of polarization-mismatch and space-correlation to a multiple-input and single-output (MISO) channel which is observable in the near future cellular communications environments such as large-scale antenna arrays and small cells. The analysis is based on a polarization-mismatched and space-correlated MISO channel which is modeled from the conventional dual-polarized channel. In the MISO channel, polarization-mismatch is described by the polarization-mismatch angle which is uniformly distributed from 0 to the maximum polarization-mismatch angle and space-correlation is described by the exponential correlation model. Assuming high SNR, approximate expressions of the ergodic capacity are derived as a function of the transmit power, number of transmit antennas, maximum polarization-mismatch angle, and space-correlation coefficient in four representative environments: narrowly or widely spread polarization-mismatch angles and slightly or highly correlated channels. Further, the capacity loss introduced by polarization-mismatch and space-correlation is derived with respect to the maximum polarization-mismatch angle and space-correlation coefficient. It is shown that the capacity loss introduced by polarization-mismatch is upper bounded by 2 bit/s/Hz. Whereas, the capacity loss introduced by space-correlation increase with the number of transmit antennas and is upper bounded by 0.832 bit/s/Hz. Required resources to compensate for the capacity loss is derived as well.
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