Signal generating method and electronic device

A technology of signal generation and electronic equipment, applied in the field of communication, can solve problems such as serious signal interference, achieve the effect of reducing the amplitude requirement, reducing the difficulty of signal generation, and improving performance

Active Publication Date: 2020-03-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] Although this technique can successfully generate a modulated signal in 16QAM format, the technique requires a signal amplitude of 1.9V π
At the same time, since this technology uses a 16-level drive signal, the interference between signals will be very serious during transmission.

Method used

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  • Signal generating method and electronic device
  • Signal generating method and electronic device
  • Signal generating method and electronic device

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Embodiment Construction

[0047] In order to make the purpose, technical solution and advantages of the present disclosure clearer, the implementation manners of the present disclosure will be further described in detail below in conjunction with the accompanying drawings.

[0048] Figure 7 Shown is a system schematic diagram of a fiber optic communication system. In the optical fiber communication system, a transmitter and a receiver may be included, and an optical fiber link for signal transmission between the transmitter and the receiver. On the transmitter side, it may also include an electrical transmitter, which can provide a digital signal, and the transmitter can receive the digital signal from the electrical transmitter, and perform channel coding and modulation on the digital signal to obtain The optical signal is transmitted to the receiver through the optical fiber link.

[0049] Figure 8 What is shown is a schematic structural diagram of an electronic device provided by an embodiment ...

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Abstract

The disclosure provides a signal generating method and electronic equipment, which belong to the technical field of communication. The disclosure increases the mapping process so that the four-level signal is converted into a six-level signal, thereby driving the dual-drive Mach-Zendel modulator DDMZM based on the six-level signal, reducing the signal-to-noise ratio requirement of the input signal and improving the The ability of the sending end to resist noise, while reducing the influence of crosstalk between signals, lowers the demand standards for DACs, drivers and other devices. In addition, the embodiments of the present disclosure greatly reduce the amplitude requirement of the driving signal, so that the amplitude requirement of the driving signal is lowered, and the requirement for power consumption is further reduced, the working pressure of the DDMZM is reduced, and the performance of the overall system is improved.

Description

technical field [0001] The present disclosure relates to the technical field of communications, and in particular to a signal generation method and electronic equipment. Background technique [0002] In modern communication technology, signal modulation technology is an important means. Signal modulation refers to the process of processing the information of the signal source and loading it on the carrier to make it into a form suitable for channel transmission. In short, it is a technology that makes the carrier change with the signal. Through signal modulation, the signal can obtain better transmission performance. Among the commonly used signal modulation methods, according to the different modulation parameters, the signal modulation methods can be mainly divided into three categories: amplitude modulation, frequency modulation and phase modulation. In amplitude modulation, 16-level quadrature amplitude modulation (16Quadrature AmplitudeModulation, 16QAM) has high prac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/34H04J13/00H04J13/12
CPCH04B10/2575H04B10/556H04L27/34H04B10/541H04B10/5561
Inventor 左天健张森
Owner HUAWEI TECH CO LTD
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