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Power control method for uplink large-scale MIMO (Multiple Input Multiple Output) system based on low complexity receiver

A low-complexity, power-controlled technology, applied in the field of wireless communication, can solve the problems of large channel matrix dimension and high computational complexity

Active Publication Date: 2016-07-06
上海瀚芯实业发展合伙企业(有限合伙)
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Problems solved by technology

However, the inverse operation of the channel matrix is ​​included in the MMSE receiver. When the system scale is large, the dimension of the channel matrix will become very large, and the computational complexity is very high

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  • Power control method for uplink large-scale MIMO (Multiple Input Multiple Output) system based on low complexity receiver
  • Power control method for uplink large-scale MIMO (Multiple Input Multiple Output) system based on low complexity receiver
  • Power control method for uplink large-scale MIMO (Multiple Input Multiple Output) system based on low complexity receiver

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Embodiment Construction

[0056] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention All modifications of the valence form fall within the scope defined by the appended claims of the present application.

[0057] A power control method for an uplink massive MIMO system based on a low-complexity receiver, such as figure 1 shown, including the following steps:

[0058] Step 1: In an uplink massive MIMO system, a truncated polynomial (TPE) receiver is used, and the truncated polynomial is used as an inversion matrix in the MMSE receiver.

[0059] The expression of the TPE receiver in the step 1 is:

[0060]

[0061] Among them, A t Indicates the TPE receiver, J is t...

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Abstract

The invention discloses a power control method for an uplink large-scale MIMO (Multiple Input Multiple Output) system based on a low complexity receiver. The power control method comprises the following steps: in the uplink large-scale MIMO system, adopting a truncated polynomial (TPE) receiver, and taking a truncated polynomial as an inverse matrix in a minimum mean square error (MMSE) receiver; and acquiring statistical channel state information by a base station, and using an iterative algorithm to perform joint optimization on a multinomial coefficient of the TPE receiver and an uplink transmitting power of a user. The power control method for the uplink large-scale MIMO system based on the low complexity receiver provided by the invention effectively avoids a large dimensional matrix inverse operation of the MMSE receiver and reduces the complexity, and the performance can be approximated to the MMSE receiver.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to an uplink massive MIMO system power control method based on a low-complexity receiver. Background technique [0002] Since the massive MIMO technology was proposed, it has received extensive attention and has gradually become a research hotspot. By deploying a large number of antennas at the base station, high array gain and spatial resolution are obtained, enabling the system to serve more users in parallel at the same time, greatly improving spectrum efficiency. Therefore, massive MIMO has great potential to meet users' exponential growth in data communication needs, and is a very promising next-generation cellular network technology. [0003] In massive MIMO systems, good performance can be obtained using linear receivers. Minimum mean square error (MMSE) receivers are the best performing linear receivers. However, the inversion operation of the c...

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Application Information

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IPC IPC(8): H04W52/14H04W52/24H04W52/30H04W52/42H04B7/08H04B7/04
CPCH04B7/0426H04B7/08H04W52/146H04W52/241H04W52/30H04W52/42
Inventor 黄永明范立行李双龙杨绿溪
Owner 上海瀚芯实业发展合伙企业(有限合伙)
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