Comparison of Nearby Channel Estimation and Cooperative Communication Schemes

• Main Authors: Chen, Ming-Ting, 陳銘廷
• Other Authors: Wu, Jia-Chyi
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/23044582165328751550

碩士 === 國立臺灣海洋大學 === 通訊與導航工程學系 === 104 === In wireless communication systems, signals may not transmit success from transmitter to receiver due to various factors, such as diffraction, refraction, and multipath fading effect to result distorted signals. To ease these problems, we may apply a better channel estimation scheme by inserting longer pilot into the transmitted signals in the transmitter to better realize the channel condition. Thus, the channel impulse response can be estimated, so as to compensate for the impact caused by the Multipath Effect. In this study, we have measured the frequency responses within the adjacent channels, and to estimate the correlation statistics between channels to yield nearby channels. Gathering the actual frequency response helps to predict the suitable range of distance between nearby channels which can be used to assist the conventional Cooperative Communication to implement channel estimation and to save the bandwidth. Finally, the cooperative communication that adopts nearby channel estimation will be compared to the one that does not in order to show the performance of nearby channels.