Summary
International Symposium on Antennas and Propagation
2010
Session Number:3TF1
Session:
Number:3TF1-1
Effect of Spacing and Radiation Pattern of Antenna Elements on Capacity in Near-field MIMO System
Dalin Zhang, Toshikazu Hori, Mitoshi Fujimoto,
pp.-
Publication Date:2010/11/23
Online ISSN:2188-5079
Summary:
Multiple-Input-Multiple-Output (MIMO) transmission system, which uses plural antennas at both the transmitter and receiver, is an extremely spectrum-efficient technology. MIMO technology constitutes a breakthrough in wireless communication system design. The technology offers a number of benefits that help meet the challenges posed by both the impairments in the wireless channel as well as resource constraints. In addition to the time and frequency dimensions that are exploited in conventional Single-Input-Single-Output (SISO) transmission systems, the leverages of MIMO are realized by exploiting the spatial dimension [1]. Near Field Communication (NFC) is a short-range wireless connectivity technology [2] which enables the exchange of data between devices over a range of about 10 cm. Compared to the SISO system, using MIMO system will increase in data rate, which is realized for no additional power or bandwidth expenditure. However, the presence of a strong line-of-sight (LOS) component in a near field communication system, is viewed as a degradation in a conventional MIMO system [3]. This paper focuses on the element spacing, arrangement and radiation pattern of antenna elements in Near-field MIMO communication system. We try to find out the optimum parameters of the transmission array. In Sec.2, the analysis models of Near-field MIMO system with two types of arrangement are described. In Sec.3, the dual-dipole-element array is used to estimate the effect of the Half-Power Beam Width (HPBW) of radiation pattern on channel capacity, and the correlation among antenna elements is also discussed in detail in the section. The final conclusion is provided in Sec.4.