User selection method in multi-community multi-user interference channel system
A multi-cell multi-user, interference channel technology, applied in the field of user selection in multi-cell multi-user interference channel system, can solve the problems of high complexity of user selection scheme and poor system performance, etc.
Inactive Publication Date: 2015-04-22
ZHENGZHOU UNIV
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[0010] The technical problem to be solved by the present invention is: how to propose a low-complexity and high-performance user selection method in a multi-cell multi-user interference channel system to solve the defects of poor system performance of the OIAUS scheme and traditional user selection based on eigenvalue decomposition The problem of high program complexity
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[0043]In order to make the purpose, content and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.
[0044] The user selection method in the multi-cell multi-user interference channel system proposed by the present invention is described as follows in conjunction with the accompanying drawings and embodiments:
[0045] like figure 1 As shown, the present invention comprises the following steps:
[0046] S1: Obtain the interference channel matrix from other cell base stations to the user in this cell, and combine the interference channel matrix with the interference channel matrix of the user in the cost cell;
[0047] The steps of obtaining the interference channel matrix of each user are as follows:
[0048] Assuming that the number of user groups in the system is 3, each user group includes K users, and the number of transmit antennas at the base statio...
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The invention discloses a user selection method in a multi-community multi-user interference channel system in the technical field of communication. The user selection method in multi-community multi-user interference channel system includes: firstly, obtaining an interference channel matrix from other communities to the users in the community, and combing the interference channel matrix into an interference channel matrix of the users of the community; resolving quick response (QR) sorting the interference channel matrix of the users of the community, and obtaining a corresponding upper triangular matrix and postprocessing matrix; using the upper triangular matrix to obtain a user channel mass matrix; obtaining optimal users through the user channel mass matrix; finally, obtaining a postprocessing matrix through the interference channel matrix corresponding to the optimal users. The user selection method in the multi-community multi-user interference channel system is capable of ensuring that the users can select the system, lowering calculating complexity of channel quality information of each user, increasing handling capacity of the system, obviously improving the residual interference after user selection, and improving feasibility of the method in practical application.
Description
technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a user selection method in a multi-cell multi-user interference channel system. Background technique [0002] The pursuit of higher transmission rates and higher spectral efficiency is a long-standing topic in wireless communications. Multiple antenna technology (Multiple Input Multiple Output, MIMO) introduces additional spatial freedom for wireless communication by configuring multiple antennas at the transmitting end and the receiving end, thereby greatly improving the spectrum utilization and throughput of the system. With the deepening of research, MIMO technology has been extended from point-to-point single-user system to point-to-multipoint multi-user MIMO system (Multi-User MIMO: MU-MIMO). The MIMO system can greatly improve the system capacity and spectral efficiency. In the evolution of the 3GPP LTE standard, the MU-MIMO technology has been adopte...
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IPC IPC(8): H04W48/16
Inventor 高向川王忠勇朱政宇靳进王朝伟
Owner ZHENGZHOU UNIV