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

A signal transmission method, device and system for a frequency division duplex base station

A technology of signal transmission and frequency division, applied in the field of communication, can solve the problems of high bandwidth, high cost and high power consumption of PD working rate feedback channel

Active Publication Date: 2018-07-03
HUAWEI TECH CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the research and practice of the existing technology, the inventors of the present invention found that the PD working rate and the bandwidth of the feedback channel required by the existing solution are very high, not only the cost is high, but also the power consumption is large

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
  • A signal transmission method, device and system for a frequency division duplex base station
  • A signal transmission method, device and system for a frequency division duplex base station
  • A signal transmission method, device and system for a frequency division duplex base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] This implementation will be described from the perspective of a signal transmitting device of a frequency division duplex base station.

[0079] A signal transmission method for a frequency division duplex base station, comprising: acquiring a downlink digital signal, performing first pre-distortion processing on the downlink digital signal according to a pre-distortion coefficient of a transmitting frequency band, to obtain a first processed digital signal; pre-distorting the downlink digital signal according to a receiving frequency band The coefficients perform second pre-distortion processing on the downlink digital signal to obtain a second processed digital signal; perform combined processing on the first processed digital signal and the second processed digital signal, and then transmit through the transmitter.

[0080] Such as figure 1 As shown, the specific process can be as follows:

[0081] 101. Obtain a downlink digital signal;

[0082] 102. Perform first ...

Embodiment 2

[0109] In this embodiment, the simulated combined circuit is taken as an example for detailed description, as follows:

[0110] The signal transmitting device of the frequency division duplex base station may include a transmit frequency band predistortion processing module (PDtx, Transmitter Band Predistortion), a receive frequency band predistortion processing module (PDrx, Receiver Band Predistortion) and a combination processing module, and may also include a predistortion Training module (PD Trainer) and feedback module, for example, such as Figure 2a As shown, the details can be as follows:

[0111] (1) Transmission band pre-distortion processing module (PDtx);

[0112] The transmit band predistortion processing module can be used to receive the downlink digital signal, and perform the first predistortion process on the downlink digital signal according to the transmit band predistortion coefficient (that is, perform distortion processing opposite to the distortion cha...

Embodiment 3

[0176] The same as the second embodiment, in this embodiment, the analog combination is also used as an example for illustration. The difference from the second embodiment is that the feedback module and the combination processing module do not share a resonance, but use independent Resonance can be as follows:

[0177] Such as image 3 As shown, the signal transmitting device of the frequency division duplex base station may include a transmit frequency band pre-distortion processing module (PDtx), a receive frequency band pre-distortion processing module (PDrx) and a combination processing module. In addition, it may also include a pre-distortion training module and a feedback module.

[0178] Among them, the structures and functions of the transmitting frequency band pre-distortion processing module, receiving frequency band pre-distortion processing module, combination processing module, feedback module and pre-distortion training module are the same as those in Embodimen...

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

An embodiment of the invention discloses a signal transmitting method, a signal transmitting device and a signal transmitting system for a frequency division duplex base station. According to the embodiment, the signal transmitting method comprises the following steps of acquiring downstream digital signals; performing first pre-distortion processing on the downstream digital signals according to a pre-distortion factor of a transmit frequency band to obtain first processed digital signals; performing second pre-distortion processing on the downstream digital signals according to a pre-distortion factor of a receive frequency band to obtain second processed digital signals; and combining the first processed digital signals and the second processed digital signals and transmitting the combination of the first processed digital signals and the second processed digital signals by using a transmitter. By the scheme, the signals of the transmit frequency band and the signals of the receive frequency band can be subjected to pre-distortion processing respectively, the problem that in the existing pre-distortion processing mode, bandwidth requires to cover the transmit frequency band and the receive frequency band simultaneously is solved, in the scheme, the required bandwidth and the required working speed can be greatly reduced, the cost can be reduced, and the power consumption can also be reduced.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a signal transmission method, device and system of a frequency division duplex (FDD, Frequency Duplex Division) base station. Background technique [0002] Frequency Division Duplexing (FDD, Frequency Division Duplexing) refers to a mobile communication mode that transmits on one frequency band while receiving on another frequency band. Its operation requires two independent channels, one for downlink To transmit information, another channel is used to transmit information upwards. When the existing FFD base station transmits signals, it generally divides the downlink digital signal (DL signal, Downlink signal) into two channels, one into the predistortion (PD, Predistortion) module, and the other into the PD training module (PD Trainer module), The output signal of the PD module is also divided into two channels. One way to the digital-to-analog converter (D AC,...

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): H04L25/49H04W88/08
CPCY02D30/70
Inventor 朱尔霓叶四清
Owner HUAWEI TECH CO LTD