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Jafar, S. and Shamal, S. (2008) Degree of Freedom Region for the Mimo x Channel. IEEE Trans Information Theory, 54, 151-170.
https://doi.org/10.1109/TIT.2007.911262

has been cited by the following article:

• TITLE: Improved Interference Cancellation Scheme for X Channels with Four Antennas

  AUTHORS: Xinji Tian, Dong Yang, Haotian Zhang, Wenjie Jia

  KEYWORDS: X Channel, Space-Time Codeword, Multi-User Interference, Transmission Efficiency, Feedback Information

  JOURNAL NAME: Journal of Computer and Communications, Vol.5 No.6, April 25, 2017

  ABSTRACT: Interference cancellation scheme without feedback is proposed for X channels with four antennas at each user. Space-time codeword with Alamouti structure is designed for each user. Codewords are combined according a certain rule. The unwanted codewords are cancelled by linear operation on the received signals. Then, multi-user interference is mitigated by the orthogonal property of the Alamouti code. Comparing with the existing scheme for the same scene, feedback information is not required in the proposed scheme. So the transmission efficiency is improved.