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Joint pre-coding and power control method for multi-antenna cellular network

A joint precoding and cellular network technology, applied in the field of multiple-input and single-output cellular networks, can solve the problems of poor scheduling and low transmission efficiency for users in edge cells

Active Publication Date: 2011-03-23
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0006] The present invention provides a method for joint precoding and power control of a multi-antenna cellular network, which solves the problems of poor scheduling and low transmission efficiency of edge cell users in existing scheduling methods, and solves the relationship between performance, fairness and complexity at the same time. On the premise of ensuring higher performance and improving the channel capacity of the MISO system, taking into account fairness and reducing the complexity of the system

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  • Joint pre-coding and power control method for multi-antenna cellular network
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  • Joint pre-coding and power control method for multi-antenna cellular network

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[0071] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0072] like figure 1 , figure 2 As shown, the intersection of every 3 adjacent cells and the sector corresponding to the center point (base station) form a regular hexagon, forming a cooperative cluster. In the cooperative cluster, the intersection of every 3 adjacent cells is a cooperative transmission domain. The clover-shaped part in the figure; in the cooperative cluster, the part outside the cooperative transmission domain is the non-cooperative transmission domain.

[0073] figure 2 An embodiment of the system is given according to the above-mentioned network topology. In the embodiment, a multi-cell multi-user downlink MISO link composed of a total number of users K=50 users is considered, and the users are evenly distributed in a regular hexagonal cooperative cluster. The number of coordinated edge cells N b =3, the number of base station ...

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Abstract

The invention relates to a joint pre-coding and power control method for a multi-antenna cellular network, and belongs to the field of multi-antenna transmission of wireless mobile communication. The method is suitable for a multiple input single output cellular network, solves the problems that a cell edge user cannot be well scheduled and transmission efficiency is low in the conventional scheduling method and the problem of a relationship among performance, fairness and complexity, and comprises the following steps of: initializing, scheduling a cooperative user, scheduling a non-cooperative user and transmitting. Multi-point cooperative transmission technology and a channel correlation scheduling algorithm are adopted, and a transmitted signal is pre-coded, so that the performance andcomplexity of a system are well considered, interference among cells is effectively inhibited, the performance of the cell edge user is improved, and high system capacity can be achieved on the premise that the complexity is low and the transmission rate of the cell edge user is ensured.

Description

technical field [0001] The invention belongs to the multi-antenna transmission field of wireless mobile communication, and in particular relates to a joint precoding and power control method of a multi-antenna cellular network, which is applicable to a multi-input single-output cellular network. Background technique [0002] With the sharp increase in the number of mobile communication users and the rapid rise of wireless broadband services (such as multimedia services), it is expected that mobile communication systems can provide higher data transmission rates (above 100Mbps) and higher spectral efficiency (above 10bps / Hz) ). [0003] The multiple-input single-output (MISO) system is a smart antenna technology that configures multiple antennas at the transmitting end and a single antenna at the receiving end, and is an effective means to improve spectrum efficiency. However, in the actual application of the MISO system, the interference from the same cell and adjacent cell...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/02H04B7/04H04W52/24
Inventor 葛晓虎黄坤杨曦曹程倩杜曲胡金钟刘应状张靖
Owner HUAZHONG UNIV OF SCI & TECH
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