Unlock instant, AI-driven research and patent intelligence for your innovation.

Receiving and transmitting device and method, pre-circuit, modulator and transceiver system

A technology for transmitting devices and modulators, which is applied in front-end circuits, transmitting devices, modulators, transceiver systems, and receiving fields, and can solve the problems of unused negative sidebands and the need to improve bandwidth utilization

Active Publication Date: 2018-10-12
HUAWEI TECH CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since only the positive sideband is filled with business data, and the negative sideband is not filled with business data, the negative sideband is not utilized, and the bandwidth utilization rate needs to be improved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Receiving and transmitting device and method, pre-circuit, modulator and transceiver system
  • Receiving and transmitting device and method, pre-circuit, modulator and transceiver system
  • Receiving and transmitting device and method, pre-circuit, modulator and transceiver system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0035] See figure 1 , which is a structure of the sending device provided in the embodiment of the present invention, which may include:

[0036] The double sideband OFDM modulator 1 is used to perform double sideband OFDM modulation on the bit sequence of the service data to obtain a double sideband OFDM analog electrical signal.

[0037] Where...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The embodiment of the invention discloses a receiving and sending device and method, a front circuit, a modulator and a transceiver system, so as to improve bandwidth utilization. The sending device includes a double-sideband OFDM modulator, which is used to perform double-sideband OFDM modulation on the bit sequence of the service data to obtain a double-sideband OFDM analog electrical signal, and the double-sideband OFDM analog electrical signal carries service data on both positive and negative sidebands; IQMZ is used to perform optical carrier modulation on the double-sideband OFDM analog electrical signal to obtain a double-sideband OFDM optical signal. The double-sideband OFDM optical signal carries service data on both positive and negative sidebands. In the embodiment of the present invention, the OFDM analog electrical signal carries service data on both the positive and negative sidebands, and the double-sideband OFDM optical signal modulated by it also carries service data on both the positive and negative sidebands. Compared with the traditional method of only carrying service data on the positive sideband, its bandwidth utilization rate is doubled.

Description

technical field [0001] The present invention relates to the technical field of communication, more specifically, to a receiving and sending device and method, a front-end circuit, a modulator and a transceiver system. Background technique [0002] Orthogonal Frequency Division Multiplexing (OFDM) technology can dynamically allocate the bit sequences of high-speed serial service data to sub-carriers whose spectrums overlap each other and are orthogonal. more extensive research and application. [0003] In the field of optical communication, the traditional method is to generate an OFDM analog electrical signal, and then modulate the OFDM analog electrical signal through an IQMZ (orthogonal Mach-Zehnder modulator) to obtain a single-sideband OFDM optical signal. When generating OFDM analog electrical signals, from the frequency domain, only the positive sideband is filled with service data, and the negative sideband is not filled with service data: taking the FFT / IFFT length ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04B10/5561H04L27/2601H04L27/2649H04B10/5165H04B10/548H04B10/675H04B10/69H04L5/0046H04L27/2627
Inventor 陈慰健
Owner HUAWEI TECH CO LTD