TY - JOUR
T1 - Capacity of 4-by-4 MIMO Channel Using One Composite Leaky Coaxial Cable with User Position Information
AU - Hou, Yafei
AU - Zhu, Junjie
AU - Denno, Satoshi
AU - Okada, Minoru
N1 - Funding Information:
Thisworkwas supported by the Ministry of InternalAffairs andCommunicationsSCOPE(Strategic Information and CommunicationsR&D Promotion Programme) 2014 under Grant 135007001.
Funding Information:
Manuscript received May 21, 2019; revised August 2, 2019; accepted September 18, 2019. Date of publication September 23, 2019; date of current version November 12, 2019. This work was supported by the Ministry of Internal Affairs and Communications SCOPE (Strategic Information and Communications R&D Promotion Programme) 2014 under Grant 135007001. The review of this article was coordinated by Dr. C. Yuen. (Corresponding author: Yafei Hou.) Y. Hou, J. Zhu, and S. Denno are with the Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan (e-mail: yfhou@okayama-u.ac.jp; pect572b@s.okayama-u.ac.jp; denno@ okayama-u.ac.jp).
Publisher Copyright:
© 1967-2012 IEEE.
PY - 2019/11
Y1 - 2019/11
N2 - Leaky coaxial cable (LCX) is applied broadly for many application scenarios because it can be utilized as antenna for user localization, wireless power transfer (WPT) and wireless coverage. Usually, one LCX can be used as one antenna, and therefore more cables are required for the configuration of an multiple-input and multiple-output (MIMO) system. This paper will provide a simple design that a 4-by-4 MIMO channel can be realized with one composite cable. Therefore the proposal can release the space limitation for MIMO deployment. The results show that, over 5 GHz frequency band, even though the distance between two V-type LCXs is 2 cm, the proposed 4-by-4 LCX-MIMO can have good channel condition which ensures the proposed composite cable can be made as a finer one. In addition, using user's position information (PI), we propose a simple power allocation scheme for the proposed LCX-MIMO system. Compared with the allocation method of equal power, the proposed method using PI can largely improve its capacity with the same level of computational complexity and without requirement of the feedback of channel status information (CSI).
AB - Leaky coaxial cable (LCX) is applied broadly for many application scenarios because it can be utilized as antenna for user localization, wireless power transfer (WPT) and wireless coverage. Usually, one LCX can be used as one antenna, and therefore more cables are required for the configuration of an multiple-input and multiple-output (MIMO) system. This paper will provide a simple design that a 4-by-4 MIMO channel can be realized with one composite cable. Therefore the proposal can release the space limitation for MIMO deployment. The results show that, over 5 GHz frequency band, even though the distance between two V-type LCXs is 2 cm, the proposed 4-by-4 LCX-MIMO can have good channel condition which ensures the proposed composite cable can be made as a finer one. In addition, using user's position information (PI), we propose a simple power allocation scheme for the proposed LCX-MIMO system. Compared with the allocation method of equal power, the proposed method using PI can largely improve its capacity with the same level of computational complexity and without requirement of the feedback of channel status information (CSI).
KW - Leaky coaxial cable
KW - MIMO channel
KW - channel capacity
KW - position information
KW - power allocation
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U2 - 10.1109/TVT.2019.2942945
DO - 10.1109/TVT.2019.2942945
M3 - Article
AN - SCOPUS:85077740688
SN - 0018-9545
VL - 68
SP - 11042
EP - 11051
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
IS - 11
M1 - 8846094
ER -