Multi-cell cooperative large-scale mimo robust precoding design and distributed processing method

A distributed processing and precoding technology, applied in electrical components, radio transmission systems, transmission systems, etc., can solve the problem of robust multi-cell precoding, etc., and achieve inter-cell interference suppression, low interaction overhead, and low calculation. The effect of complexity

Active Publication Date: 2021-11-19
SOUTHEAST UNIV
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  • Claims
  • Application Information

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Problems solved by technology

So far, there is no research on multi-cell robust precoding based on a posteriori channel model

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  • Multi-cell cooperative large-scale mimo robust precoding design and distributed processing method
  • Multi-cell cooperative large-scale mimo robust precoding design and distributed processing method
  • Multi-cell cooperative large-scale mimo robust precoding design and distributed processing method

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Embodiment Construction

[0063] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0064] Such as figure 1 As shown, it shows a flow chart of the multi-cell massive MIMO robust precoding design of the present invention, including:

[0065] (1) Establish the user's posterior channel model;

[0066] (2) Establish the user's interference plus noise covariance model and the covariance model of the received signal;

[0067] (3) Establish the user's traversal rate model or traversal rate upper bound model;

[0068] (4) Solve the weighted traversal and rate maximization problem or the weighted traversal and rate upper bound maximization problem to obtain the precoding iterative formula.

[0069] Such as figure 2 As shown, it shows the multi-cell cooperative massive MIMO robust precoding network-wide parallel distributed processing method based on maximizing weighted ergodic and rate upper bounds according to ...

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Abstract

The invention discloses a multi-cell cooperative large-scale MIMO robust precoding design and distributed processing method. The method includes the following steps: (1) establishing the user's posterior channel model; (2) establishing the user's interference plus noise Covariance model and covariance model of the received signal; (3) Establish the user's ergodic rate model or ergodic rate upper bound model; (4) Solve the weighted ergodic and rate maximization problem or the weighted ergodic and rate upper bound maximization problem to obtain the predicted Encoding iterative. Among them, the robust precoding design can resist the influence of channel estimation error, channel aging, and channel correlation on precoding by establishing the user's a posteriori channel model. By modeling user interference plus noise including inter-cell interference, the This solves a weighted sum rate maximization problem. Three distributed processing methods with different amounts of information interaction are disclosed, and the multi-cell coordinated massive MIMO robust precoding design is specifically realized.

Description

technical field [0001] The present invention relates to a multi-cell cooperative precoding design and distributed processing method, in particular to a multi-cell cooperative massive MIMO robust precoding design and distributed processing method. Background technique [0002] Massive Multiple-Input Multiple-Ouput (M-MIMO) technology can not only serve multiple users simultaneously on the same time-frequency resources, but also achieve higher spectral efficiency by arranging a large number of antennas in the base station. And energy efficiency, become the key technology of 5G physical layer. Through cooperation between base stations, multi-cell technology can further improve the performance of massive MIMO systems. In multi-cell cooperation technology, base stations exchange channel information and user data information, so that the same user can be served by multiple base stations at the same time, and spatial multiplexing greatly improves the rate performance of users. Ho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0456
CPCH04B7/0456
Inventor 高西奇王晨卢安安孙晨
Owner SOUTHEAST UNIV
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