Analysis of the Degrees of Freedom of Two-Way MIMO Broadcast Channel with Delayed CSIT

• Main Authors: Chun-Ting Chen, 陳俊廷
• Other Authors: Chia-chi Huang
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/ddwyu7

碩士 === 元智大學 === 通訊工程學系 === 104 === Nowadays, perfect channel state information at transmitters (CSIT) is widely assumed in the study of multiple-input multiple-output (MIMO) systems. All of the transmitters and receivers know the channel state information to support the use of the zero-forcing scheme [1] and interference alignment scheme [2]. Cadambe and Jafar proposed the interference alignment scheme [2] for K-user interference channel with perfect CSIT. However, we hope we can use the completely stale transmitter channel to assist receivers on decoding the message. David Tse and Maddah-Ali proposed a method to decode the receiver messages that uses the delayed CSIT. In this thesis, we modify the channel model that David Tse and Maddah-Ali studied. Finally, we discuss the degrees of freedom and compare channel rate for simulation.