Beam forming design of cloud radio transmission system with robustness

Abstract

The invention discloses a beam forming design of a cloud radio transmission system with robustness. The invention discloses a beam forming design scheme for a Cloud RAN (cloud radio access network); the scheme can realize the minimum energy consumption of the whole system under the situation of detecting the error of the channel state information, and can enable the communication equipment in thesystem to satisfy respective communication demand; the scheme specifically comprises the steps: a base station satisfies the maximum energy consumption limitation of itself, and each user satisfies the signal-interference-noise ratio required in the communication process. The mutual interference among communication signals among various users of the same base station is sufficiently considered, and the signal-interference-noise ratio is used for measuring the communication quality of each user. In the application, the beam forming design can be performed on various users through an iteration algorithm under the situation that the channel state information is uncertain by only needing to set the required communication quality of the user and the maximum available transmission energy consumption of the base station.

Description

technical field [0001] The invention designs a wireless communication and signal processing system, and in particular relates to a wireless communication system suitable for an environment of uncertain channel information. Background technique [0002] High-density deployment of cells and cooperative communication are two hot technologies in the development of mobile communication in the future, because these two technologies can meet people's growing data needs. However, due to the high-density deployment of cells, the number of base stations needs to be increased, and cooperative communication requires a backhaul link to support the cooperation between base stations. Whether it is increasing the number of base stations or increasing the backhaul link, a large amount of energy is required. It can be said that these two technologies increase data traffic at the cost of increasing energy consumption. It is well known that radio access networks consume a large amount of energ...

AI Technical Summary

Problems solved by technology

[0007] Although the cloud wireless access network at the base station has a huge energy-saving advantage, due to the introduction of the central processing unit, a large amount of energy is lost on the backhaul link between the base station and the central processing unit

At the same time, due to the time-varying communication environment of wireless communication, the beamforming design based on the channel information obtained from the pilot signal cannot guarantee the user's communication quality in the time-varying channel environment. Under the current situation, ensuring the communication quality of users while significantly reducing system energy consumption has become a major problem in the development of cloud wireless access networks.

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