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URN	etd-0601113-180111
Author	Chung-de Liu
Author's Email Address	No Public.
Statistics	This thesis had been viewed 5570 times. Download 400 times.
Department	Communications Engineering
Year	2012
Semester	2
Degree	Master
Type of Document
Language	zh-TW.Big5 Chinese
Title	The Performance Evalution of MIMO System Using Interference Alignment
Date of Defense	2013-06-07
Page Count	38
Keyword	performance analysis distance metrics MIMO channel estimation error Interference Alignment
Abstract	Recently, interference alignment (IA) has emerged as a promising technique to effectively mitigate interference in wireless communication systems. It has also evolved as a powerful technique to achieve the optimal degrees of freedom of interference channel. IA can be im- plemented in many ways such as space, time, frequency and code dirercities. Currently, most researches on developing IA assume that channel state information (CSI) is well-known at the transceiver. In practice, perfect CSI at the transceiver cannot be obtained due to many factors such as signal delay, quantization error, channel estimation error and feedback error. Under our investigation, the performance of IA is very sensitive to imperfect CSI. Therefore, this thesis proposes a spatial domain IA scheme for the three-user multiple-input multiple-output (MIMO) downlink interference channels, and analyzes the effect of channel estimation errors by modeling the estimation error as independent complex Gaussian random variables. The simulation also shows comparison results between recieving orthogonal beamforming matrix with traditional decoder and directly used MIMO equalizer without any beamforming matrix.
Advisory Committee	Chao-Tang Yu - chair Chao-Kai Wen - co-chair Wan-Jen Huang - co-chair Tsang-Yi Wang - advisor
Files	etd-0601113-180111.pdf Indicate in-campus at 5 year and off-campus access at 5 year.
Date of Submission	2013-07-03

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