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A Hardware Calibration System for Large-Scale Broadband Channels

A correction system, broadband technology, used in transmission systems, radio transmission systems, electrical components, etc.

Active Publication Date: 2021-01-26
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the existing massive MIMO channel correction methods are mainly for narrowband, and one channel corresponds to one correction compensation factor

Method used

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  • A Hardware Calibration System for Large-Scale Broadband Channels
  • A Hardware Calibration System for Large-Scale Broadband Channels
  • A Hardware Calibration System for Large-Scale Broadband Channels

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Experimental program
Comparison scheme
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Embodiment Construction

[0053] The technical solution of the present invention will be further introduced below in combination with specific implementation methods and accompanying drawings.

[0054] This specific embodiment discloses a large-scale broadband channel hardware correction system, such as figure 2 As shown in (a), a power divider, a radio frequency module, and a correction signal source are configured on the base station side, and OFDM modulation and demodulation technology is used to generate a full-bandwidth pilot signal to correct broadband channel errors. RF modules such as figure 1 As shown, it has five ports, which are control interface, antenna port, transmitting port, calibration port, and receiving port in turn. The transmitting port is represented by TX port, and the receiving port is represented by RX port. The receiving end of the radio frequency module is connected to the receiving channel of the base station side, the transmitting end is connected to the transmitting chan...

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PUM

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Abstract

The invention discloses a large-scale broadband channel hardware correction system, which configures a power divider, a radio frequency module and a correction signal source on the base station side, and uses OFDM modulation and demodulation technology to generate a full bandwidth pilot signal to correct broadband channel errors; The receiving end of the module is connected to the receiving channel of the base station side, the transmitting end is connected to the transmitting channel of the base station side, the correction end is connected to the correction signal source, the antenna end is connected to the receiving end of the antenna, and the control interface is connected to the control signal output port of the base station. The working mode of the radio frequency module includes sending signals Power amplification mode, adjustable reception signal power amplification mode, self-loop correction mode and antenna side correction mode; the working modes of the system include receiving channel correction mode, transmission channel correction mode and normal transceiver mode, the base station side controls the system's working mode, and According to the working mode of the system, the control signal is output to control the work of the correction signal source and the radio frequency module. The invention can eliminate the influence brought by the broadband channel error.

Description

technical field [0001] The invention relates to a massive MIMO transmission system, in particular to a hardware correction system. Background technique [0002] The basic feature of a Massive Multiple Input Output (MIMO) system is to configure a large-scale antenna array on the base station side. A large-scale antenna array provides high spatial resolution, and different users can use different spatial degrees of freedom to communicate with the base station on the same time-frequency resource, thereby achieving better spectral resolution. In addition, since the user's beam can be confined within a small range, inter-user interference is significantly reduced. In a massive MIMO system, the transmit power of each antenna on the base station side is inversely proportional to the square of the number of antennas, thus greatly reducing the transmit power of the system, which is more in line with the concept of green communication. The above-mentioned advantages make the massive...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/11H04B17/21H04B7/0413
CPCH04B7/0413H04B17/11H04B17/21
Inventor 高西奇石丁王瀚颖丁俊朋徐达吴体昊王闻今卢安安
Owner SOUTHEAST UNIV
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