Patent
Pre-coding interference elimination method based on sub-space estimation
Chen Zengmao,Wang Xiangyang,Chu Yuzhi,Tang Yunmin +3 more
- 15 May 2018
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TL;DR: In this paper, the authors proposed a pre-coding interference elimination method based on sub-space estimation, which consists of estimating information of an interference channel of a primary user on a secondary user by utilizing a subspace estimation method.
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Abstract: The invention provides a pre-coding interference elimination method based on sub-space estimation. The pre-coding interference elimination method based on sub-space estimation comprises the steps of:estimating information of an interference channel of a primary user on a secondary user by utilizing a sub-space estimation method at first; decomposing a received signal covariance matrix to obtain an interference covariance matrix and a noise covariance matrix; projecting a signal transmitted by the secondary user into a vertical space of an interference channel on the primary user; and projecting a signal transmitted by the secondary user into the vertical space that the primary user is combined with a balanced coded signal, so that interference of the secondary user on the primary user iseliminated. According to the ratio of a channel matrix characteristic value to a noise characteristic value between the primary user and the secondary user, the distance between the primary user and the secondary user is estimated; and thus, power control is carried out.
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Citations
Patent
Interference elimination modulation method based on decomposition matrix in super Nyquist transmission system
Wang Shiyan,Li Qian,Duan Sirui +2 more
- 12 Jul 2019
TL;DR: In this article, an interference elimination modulation method based on a decomposition matrix in a super Nyquist transmission system was proposed, which belongs to the field of wireless mobile communication, where the transmission rate of the transmitted signal is improved, the intersymbol interference is completely eliminated, and decoding complexity of a receiving end is reduced.
Patent
Cognitive radio device and method based on single-channel self-interference cancellation
Ma Wanzhi,Ying Liu,Pan Wensheng,Shao Shihai,Zhao Hongzhi,Wang Chuandan +5 more
- 29 May 2020
TL;DR: In this paper, a cognitive radio device and a method based on single-channel self-interference cancellation was proposed, where coupled transmitting signals are subtracted from a cognitive receiving channel and a communication receiving channel, so that simultaneous same-frequency work of the receiving and the transmitting channels is realized.
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Patent
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