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A massive mimo multicast power allocation method for joint optimization of energy efficiency and spectrum efficiency

A joint optimization and large-scale technology, applied in the field of communication, can solve problems such as high complexity of the expectation process, difficulty in obtaining instantaneous channel state information, and difficulty in solving, so as to achieve a balance between energy efficiency and spectral efficiency, improve energy efficiency and spectral efficiency, The effect of reducing interference between users

Active Publication Date: 2022-07-26
SOUTHEAST UNIV
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Problems solved by technology

[0004] The traditional energy-efficiency-spectrum-efficiency joint optimization problem is often based on instantaneous channel state information, but in massive MIMO systems, it is difficult to obtain instantaneous channel state information, and when the number of antennas on the base station side is large, the process of solving the multicast rate of the system The complexity of the expected process is high
For the problem of maximizing the weighted sum of energy efficiency and spectral efficiency, it is usually difficult to solve because the objective function is a fraction and the numerator is a non-convex function

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  • A massive mimo multicast power allocation method for joint optimization of energy efficiency and spectrum efficiency
  • A massive mimo multicast power allocation method for joint optimization of energy efficiency and spectrum efficiency
  • A massive mimo multicast power allocation method for joint optimization of energy efficiency and spectrum efficiency

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[0062] Below in conjunction with the accompanying drawings and specific embodiments, the present invention will be further clarified. It should be understood that these examples are only used to illustrate the present invention and not to limit the scope of the present invention. Modifications in the form of valence all fall within the scope defined by the appended claims of the present application.

[0063] A massive MIMO multicast power allocation method with joint optimization of energy efficiency and spectrum efficiency, such as figure 1 shown, including the following steps:

[0064] 1. Massive MIMO Beam Domain Multicast Communication

[0065] Considering the single-cell massive MIMO non-orthogonal unicast multicast transmission scenario, the base station side is configured with a large-scale antenna array with M transmitting antennas (large-scale means that M is 10 2 or 10 3 Magnitude). There are K target users in the cell, belonging to the same multicast group, and e...

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Abstract

The invention discloses a massive MIMO multicast power distribution method with joint optimization of energy efficiency and spectrum efficiency. That is, multicast signals are sent to users on the same time-frequency resources at the same time. Through the uplink channel sounding process, the base station obtains the statistical channel state information of each user, and uses the weighting factor to implement the multicast transmission power allocation that optimizes system resources (ie, maximizes the weighted sum of energy efficiency and spectral efficiency). The invention has low implementation complexity, and can effectively balance the energy efficiency and spectrum efficiency of massive MIMO multicast transmission to obtain maximum resource efficiency.

Description

technical field [0001] The invention belongs to the field of communications, and in particular relates to a massive MIMO broadcast transmission power distribution method utilizing a large-scale antenna array and statistical channel state information to jointly optimize energy efficiency and spectrum efficiency. Background technique [0002] In a massive MIMO system, a massive antenna array is arranged at the base station to serve multiple users at the same time. The use of massive MIMO technology can effectively reduce the interference between users and greatly improve the energy efficiency and spectral efficiency of wireless communication systems. In the process of massive MIMO downlink transmission, the base station side converts the transmitted signal to the beam domain through unitary transformation, and transmits the signal in the beam domain channel, making full use of the spatial angular resolution of the massive antenna array and the user channel in the beam domain. ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413H04B7/0426H04B7/06
CPCH04B7/0413H04B7/043H04B7/0626Y02D30/70
Inventor 尤力任博文黄雨菲陈婷婷何思然江彬王闻今
Owner SOUTHEAST UNIV
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