Multi-cell large-scale MIMO system resource allocation method based on EGC

Abstract

The invention discloses a multi-cell large-scale MIMO system resource allocation method based on ECG. The method comprises the following steps: adopting a more economical equal gain combination (EGC)receiver, taking the lower bound of the maximized system spectrum efficiency as the criterion after initializing the pilot frequency length, the pilot frequency signal power, the data signal power, and the user QoS demand, and iteratively optimizing a pilot frequency signal and a data signal until the system spectrum efficiency is converged in the premise of satisfying a user rate demand. The userQoS demand in the actual application is considered at the same time, the demand on the transmission rate by each user is satisfied, and the system spectrum efficiency is effectively improved throughthe resource application method proposed by the invention in comparison with equal power resource allocation.

Description

technical field [0001] The invention belongs to the technical field of communications, and relates to an uplink resource allocation method based on equal-gain combined reception to meet user needs, and in particular to an EGC-based multi-cell massive MIMO system resource allocation method. Background technique [0002] In order to meet the requirements of future 5G wireless networks, massive multiple-input multiple-output (massive MIMO) has attracted extensive attention. Massive MIMO uses hundreds of antennas to provide services for dozens of users in the same time-frequency resource, and is a key technology to improve spectral efficiency by several orders of magnitude. With the sharp increase in energy consumption of wireless communication devices and the high concern about global warming, green communication has gradually become a trend. Therefore, the research focus of resource allocation has gradually shifted from spectrum efficiency resource allocation to energy effici...

AI Technical Summary

Problems solved by technology

[0005] In previous studies on massive MIMO resource allocation, it was often assumed that the pilot signal and the data signal are equally power allocated. For such a power allocation mechanism, when the signal-to-noise ratio is low, the power of the pilot signal and the power of the data signal will be reduced, and the channel capacity at this time will be proportional to the square of the transmission power, which greatly reduces the energy efficiency of the system

At the same time, the research on the multi-cell multi-user massive MIMO system often ignores the user's requirements for the rate, and cannot be used in actual production and application.

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