There are a few core technologies to enable high-performance 4th generation (4G) broadband wireless communication system. A multiple input multiple output (MIMO) provides high-rate transmission through expended channels by multiple array antennas in both sender and receiver side. Also orthogonal frequency division multiplexing (OFDM) is well-known as the most appropriate technique for high data rate transmission such as Mobile WiMAX and WLAN. Efficient decrease of inter-carrier interference (ISI) and inter-carrier interference (ICI) are the reasons for why OFDM is suitable for high-performance transmission, 4G mobile communication. In this paper, we mainly focus on two of objects, combination between MIMO and OFDM, and OFDM channel simulator using Ray-tracing algorithm. The results of this paper can be used implementation of a Wireless Software Platform for 4G Mobile Communication Systems.
목차
Abstract Ⅰ. 서론 Ⅱ. 시스템 모델 Ⅱ.1. OFDM Ⅱ.2. STBC(Alamouti Code) Ⅱ.3. 최대비 결합(Maximum Ratio Combining) Ⅱ.4. STBC-OFDM Ⅲ. 실험 결과 Ⅳ. 결론 참고문헌
키워드
Multiple Input Multiple Output(MIMO)Orthogonal Frequency Division Multiplexing (OFDM)Space Time Block Codes(STBC)Maximum-Likelihood detector(ML)