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

Method and system for judging downlink pilot time slot of time division-synchronous code division multiple access (TD-SCDMA) repeater

A TD-SCDMA, pilot time slot technology, applied in the field of communication, to achieve the effect of easy implementation and reliable capture

Inactive Publication Date: 2014-09-24
珠海银邮光电技术发展股份有限公司 +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the acquisition of the downlink pilot time slot (DwPTS) has always been the key point of the main research and needs to be broken by those skilled in the art. The existing technology has proposed a variety of acquisition or judgment methods, but they still need to be further improved and 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
  • Method and system for judging downlink pilot time slot of time division-synchronous code division multiple access (TD-SCDMA) repeater
  • Method and system for judging downlink pilot time slot of time division-synchronous code division multiple access (TD-SCDMA) repeater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] like figure 1 As shown, the TD-SCDMA repeater downlink pilot time slot judging system provided in this embodiment includes: a reference level signal input module, a TD downlink detection signal input module, an ADC sampling module, a logic comparator, and a characteristic time slot judging module , timer, analog comparator and downlink pilot falling edge capture module.

[0038] Among them, the reference level signal input module is used to provide a preset reference level signal for the analog comparator and logic comparator; the TD downlink detection signal input module is used to provide the TD downlink detection signal to the analog comparator and ADC sampling module; The sampling module is used to sample the TD downlink detection signal, and provide the sampling signal to the logic comparator; the logic comparator is 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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method and a system for judging a downlink pilot time slot of a TD-SCDMA repeater. The method comprises the steps of conducting m-point sampling on a current TD downlink detection signal, wherein m>=3, and the sampling interval is smaller than 50 mu s; comparing m-point sampling values with a reference level and obtaining corresponding comparison results; comparing comparison results with digital features of a downlink pilot and adjacent portions of the downlink pilot; if comparison results conform to digital features of the downlink pilot and adjacent portions of the downlink pilot, determining that the position of an m-point sampling sequence is an initial position of the downlink pilot; in an interval of the latest sampling point time delay 4875-4925 mu s, starting comparison between the TD downlink detection signal and a reference level signal; and detecting output after starting of the comparison between the TD downlink detection signal and the reference level signal, and judging that this moment is the falling edge of the downlink pilot when the output is the low level. The method and the system are reliable, accurate and easy to implement.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a device and method for synchronous switching control of a first time slot switching point of a TD-SCDMA repeater. Background technique [0002] TD-SCDMA third-generation mobile communication system (referred to as TD system) has undergone intensive construction and is providing faster and higher-quality network services for the vast number of mobile communication users. Compared with the well-known second-generation communication system, the TD system provides many attractive network features, including dynamic channel configuration, joint detection, synchronization, smart antenna and other technologies. The introduction of these new technologies has brought some technological changes and higher requirements, and the complexity of system equipment design has also greatly increased. [0003] For repeaters and dry amplifiers, unlike traditional 2G equipment, the duplex mode...

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): H04B17/00H04W24/00H04B17/30
Inventor 李广
Owner 珠海银邮光电技术发展股份有限公司