Method for distributing power and choosing antenna in distributed type MIMO (multiple input multiple output) system and capable of increasing power efficiency of mobile communication system

Abstract

The invention discloses a method for distributing power and choosing an antenna in a distributed type MIMO (multiple input multiple output) system and capable of increasing power efficiency of a mobile communication system, and the method comprises the following steps: 1) utilizing a receiving terminal to periodically detect the large-scale channel fading information in the distributed type MIMO mobile communication system and feed the information back to a transmitting terminal; 2) carrying out filling power distribution among ports by a base station according to the received large-scale channel fading information; and 3) distributing equal power to all the ports according to the power distributing result received by each port, wherein the process of distributing the power and quickly choosing the antenna each time is finished by repeating the third step in each running period. By using the method for distributing the power and choosing the antenna in the distributed type MIMO system provided by the invention, the power efficiency of the mobile communication system is increased, the antenna-choosing and switching method for a multi-antenna mobile communication system is improved, and the mobile demand on the mobile communication system is ensured. The main task of an algorithm is to calculate the filling power distribution among the ports. The power distribution is based on the large-scale channel fading information, so the complexity in the actual system running process is lower.

Description

technical field [0001] The invention relates to a method for base station transmission power allocation and antenna resource allocation in the field of wireless mobile communication, and belongs to the field of wireless resource management research in mobile communication systems. Background technique [0002] With the wide application of MIMO technology in mobile communication systems, centralized multi-antenna systems and distributed multi-antenna systems have become typical wireless network structures in mobile communication systems. In order to effectively use the multi-antenna resources in the mobile communication system, the collaborative technology is used between the centralized or distributed antennas in the system to improve the system spectrum utilization and power consumption, and the multi-antennas are placed reasonably to form a relay antenna system to reduce Various new wireless network structures, such as high power efficiency and improved wireless signal cov...

AI Technical Summary

Problems solved by technology

[0004] The traditional antenna selection method mainly selects the transmitting and receiving antennas in the centralized multi-antenna system according to the wireless channel state of each antenna to reduce the number of radio frequency units and improve the performance of the airspace correlation, which cannot be applied to the antennas composed of different placement methods of multiple antennas. In the distributed network structure of

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