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Method for base station antennas and user emitting power by uplink large scale MIMO combined optimization

A base station antenna and transmit power technology, applied in power management, space transmit diversity, diversity/multi-antenna systems, etc., can solve problems such as closed expressions that do not give optimal solutions

Active Publication Date: 2016-08-03
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, no closed-form expression for the optimal solution is given, and the scheme assumes that the rate constraints of all users are the same

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  • Method for base station antennas and user emitting power by uplink large scale MIMO combined optimization
  • Method for base station antennas and user emitting power by uplink large scale MIMO combined optimization
  • Method for base station antennas and user emitting power by uplink large scale MIMO combined optimization

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[0051] 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.

[0052] A method for jointly optimizing the number of base station antennas and user transmit power in uplink massive multiple-input multiple-output (MIMO). The targeted scenario is an uplink massive MIMO system using a minimum mean square error (MMSE) receiver. After obtaining the statistical channel state information, the base station obtains the user's uplink rate processed by the MMSE receiver, and then obtains the user's transmit power represented by the user rat...

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Abstract

The invention discloses a method for combined optimizing base station antennas and user transmitted power by an uplink large scale MIMO, directed at an uplink large scale MIMO system which adopts (MinimumMean Square Error) MMSE receiver. The method comprises the following steps: after acquiring state information of statistic channel, the base station obtaining a user uplink rate that is processed by the MMSE receiver so as to obtain the user transmitted power expressed by the user uplink rate; on the basis of the user transmitted power, establishing an energy efficiency optimization object; obtaining the optimized base station user speed through finite iteration; in each iteration, the obtained optimized solution is a closed-form expression; finally, the base station, on the basis of the relationship between user rate and power, obtaining the optimized user uplink transmitted power so as to complete combined optimization of the base station antennas and user transmitted power. According to the invention, only state information of statistic channel are utilized in the execution of an algorithm, which avoids operations involving large dimensional instant channel matrix and reduces calculating complexity.

Description

technical field [0001] The invention provides a method for jointly optimizing the number of base station antennas and user transmission power in a massive MIMO uplink, and belongs to the technical fields of information signal processing and communication. Background technique [0002] Massive MIMO is one of the key technologies of the next generation cellular mobile communication, and has important research value. By configuring a large number of antennas at the base station, high spatial resolution and array gain can be obtained, so good performance can be achieved through simple signal processing. Theoretically, when the number of base station antennas is infinite, small-scale fading and noise can be eliminated through a linear receiver. One of the benefits of massive MIMO is improved energy efficiency, which is critical for the uplink because mobile power supplies typically have limited capacity. [0003] Existing design schemes have proposed a scheme to jointly optimiz...

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Application Information

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IPC IPC(8): H04B7/04H04B7/08H04L25/02H04W52/14H04W52/24H04W52/30H04W52/42
CPCH04B7/0426H04B7/0802H04L25/0256H04W52/146H04W52/241H04W52/30H04W52/42
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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