Design and analysis of large-scale antenna arrays for massive MIMO application /
Large-scale antenna arrays have a variety of applications including massive MIMO application for 5G technology. It offers high array and multiplexing gains which provide higher directivity that enhances the performance of link reliability and data rate. This thesis presents the design and analysis o...
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| Main Author: | |
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| Format: | Thesis |
| Language: | English |
| Published: |
Kuala Lumpur :
Kulliyyah of Engineering, International Islamic University Malaysia,
2019
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| Subjects: | |
| Online Access: | http://studentrepo.iium.edu.my/handle/123456789/4439 |
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| Summary: | Large-scale antenna arrays have a variety of applications including massive MIMO application for 5G technology. It offers high array and multiplexing gains which provide higher directivity that enhances the performance of link reliability and data rate. This thesis presents the design and analysis of large-scale antenna arrays. This project implements a simple and efficient technique of using sub-arrays for the development of large uniform arrays. Large arrays can be formed by repeating a small sub-arrays throughout the space of the large array. The use of sub-arrays simplifies the large array design by allowing the designer to concentrate on the smaller sub-array before constructing larger arrays. Thus, the performance and radiation characteristics of large arrays can be predicted through the investigation of sub-arrays. For this research, the array-factor for a planar and circular sub-array of 2x2 (4 elements) are analysed using MATLAB software and then large arrays are constructed by placing the 2x2 sub-array in a rectangular configurations to form 2x4 (8 elements), 4x4 (16 elements), 4x8 (32 elements) and up to 8x8 (64 elements) planar and circular arrays. Thus, the array-factors, gains, directivities, 3dB HPBWs, number of side lobes and side lobe level of the constructed large arrays has been analysed and compared with the small sub-array. The results are utilized to develop a model of modular large array configuration. Computer Simulation Technology (CST) was used to simulate a similar patch antenna arrays for validation. Gains are found higher for both planar and circular array in simulation than calculation. Number of side lobes are also reduced significantly in simulation results. Performance of regular circular array is found better than planar array. A new concept with sub-array based circular array is introduced which showed better performance than regular circular array. Sub-array based circular array provides 3 dB higher gain than 16 elements regular circular array, while it is 6.5 dB higher than 4x4 planar array. Hence developing a large circular array using sub-array is proved practical and more likely suitable for massive MIMO applications. |
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| Physical Description: | xv, 87 leaves : colour illustrations ; 30cm. |
| Bibliography: | Includes bibliographical references (leaves 80-83). |