단말용 스마트 안테나 구현 및 성능검증 연구 = Development and Performance Analysis of Smart Antennas for Terminals

다국어 초록 (Multilingual Abstract)

In this paper, we have developed the testbed of the smart antenna systems for terminals, and analyzed the performance of the smart antenna system using the measurement data in real channel environments.
After analyzing the measurement data we found out that the effect of fading can be reduced when we used four 90 degree switching beam antenna system. Therefore, the link budget can be increased from not only the beamforming gain but also the gain obtained by reducing the effect of fading by using the smart antenna technologies for terminals.

목차 (Table of Contents)

• 목 차
• Ⅰ. 서 론 ·················································································· 1
• Ⅱ. 스마트 안테나 시스템 ····················································· 4
• 1. 스위칭 빔 안테나 방식 ······················································ 5
• 2. 본 연구에서의 단말용 스마트 안테나 구조도 ············· 10
• Ⅲ. 빔 선택 알고리즘 ························································· ··· 39
• Ⅳ. Testbed 구현 및 Field test ············································ 46
• 1. Testbed 제작 ······································································ 46
• 2. Field test 및 성능 분석 ······················································ 51
• Ⅴ. 성능향상 연구 ···································································· 68
• 1. 단말용 MIMO Beamforming 연구 ··································· 68
• Ⅵ. 결론 및 향후 연구 ····························································· 74
• 참고문헌 ···················································································· 76
• 영문초록 ···················································································· 77