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A common reference-based modulator and method in an MIMO system

A modulation method and modulator technology, applied in radio transmission systems, electrical components, transmission systems, etc., can solve the problems of large circuit occupied space, high modulation complexity, and high loss, and achieve the effect of efficient implementation and easy implementation.

Active Publication Date: 2019-05-31
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a modulator and method based on common reference in the MIMO system, so as to solve the problems of large circuit occupation space, high loss and high modulation complexity caused by the traditional modulation system based on common local oscillation

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  • A common reference-based modulator and method in an MIMO system
  • A common reference-based modulator and method in an MIMO system

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Embodiment Construction

[0023] Such as figure 1 As shown, a modulator based on common reference in a MIMO system includes at least: a reference signal source 1, a power amplifier, a power divider 3, a modulation channel, a baseband signal 9, and a transceiver system 10, and the power amplifier includes: a first power amplifier 201 and the second-stage power amplifier 202; the reference signal source 1 inputs the amplified signal of the reference signal source 1 to the input terminal of the power divider 3 through the first power amplifier 201, and is divided into multiple modulation channels by the power divider 3 ; Each channel of multiple modulation channels includes: phase detector 4, loop filter 5, modulation module unit 6, power controllable VCO 7, frequency divider 8; each reference signal output by the power divider is input to the corresponding The reference signal input terminal of one of the phase detectors. The reference signal and the feedback signal output by the power controllable VCO...

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Abstract

The invention relates to a co-reference-based modulator and method in an MIMO system, belongs to the technical field of wireless communication, and is characterized in that the co-reference-based modulator at least comprises a reference signal source, a power amplifier, a power divider, a modulation channel, a baseband signal and a receiving and transmitting system, and the power amplifier comprises a first power amplifier and a second power amplifier; wherein the reference signal source inputs an amplified signal of the reference signal source into the input end of the power divider through the first power amplifier, and the amplified signal is divided into multiple paths of modulation channels through the power divider; each modulation channel comprises a phase discriminator, a loop filter, a modulation module unit, a power controllable VCO and a frequency divider. The modulation system based on the common local oscillator solves the problems that a traditional modulation system based on the common local oscillator is large in circuit occupied space, high in loss and high in modulation complexity.

Description

technical field [0001] The invention relates to a modulator and method based on common reference in the MIMO system, belonging to the technical field of wireless communication. Background technique [0002] With the rapid development of the fifth-generation communication system (5G), it is necessary to adopt a massive multiple-input multiple-output MIMO (multiple combinations of multi-channel and multi-antenna technology) system to increase channel capacity in order to transmit more communication data. There are multiple modulation channels in the MIMO system. In the traditional co-local oscillator-based modulation mode, the system needs to directly operate on high-frequency local oscillators. This modulation technology will cause problems such as local oscillator leakage and energy loss. Moreover, the MIMO multi-channel modulation technology puts forward higher requirements on the structure of the modulation circuit, cost usage, and system power consumption. [0003] The t...

Claims

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Application Information

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IPC IPC(8): H04L27/32H04L27/36H04B7/0413
Inventor 詹劲松薛佳孙璐王博胡聪
Owner XIDIAN UNIV