Coarse synchronization method of wireless terminal

A wireless terminal, coarse synchronization technology, applied in the communication between multiple stations, advanced technology, climate sustainability, etc. Overcome the possibility of peaks, improve leak detection performance, improve the effect of leak detection performance

Active Publication Date: 2011-01-26
芯鑫融资租赁(厦门)有限责任公司
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The above-mentioned coarse synchronization detection method not only has unsatisfactory missing detection performance, but also has a high probability of false detection. In the actual network, the following problems will be encountered:
If the wireless terminal is performing coarse synchronization detection at this time, the calculated R j (n) A strong peak will appear on the edge of the time slot transmitted by other wireless terminals, result

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
  • Coarse synchronization method of wireless terminal
  • Coarse synchronization method of wireless terminal
  • Coarse synchronization method of wireless terminal

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] In the following description, numerous technical details are set forth in order to provide the reader with a better understanding of the present application. However, those of ordinary skill in the art can understand that even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the claims of the present application can be realized.

[0038] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0039] The technical scheme of the present invention can be applied to wireless communication systems such as TD-SCDMA and LTE. The "power characteristic window period" referred to in the various embodiments of the present invention is the transmission period of the system signal. For the TD-SCDMA system, the power ch...

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 relates to the field of wireless communication and discloses a coarse synchronization method of a wireless terminal. The method comprises the following steps: using characteristic windows of four regions, and taking the minimum value in normalized power characteristic information of two regions of a and c to be divided by the maximum value of the normalized power characteristic information of the two regions of b and d for obtaining R(n), thereby effectively overcoming the possibility of emerging peak values on time slot edge when calculating the R(n), greatly reducing the false detection rate, improving the missed detection performance and improving the missed detection performance of coarse synchronization by 3db in the practical situation.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to the rough synchronization technology of wireless terminals. Background technique [0002] In communication systems such as Time Division Synchronous Code Division Multiple Access (TD-SCDMA for short) and Long Term Evolution (LTE for short), after the wireless terminal is turned on, it needs to perform cell Detect, and detect the synchronization information of the cell (for example, in TD-SCDMA, it is necessary to detect the synchronization information of the subframe). [0003] In general communication systems, pilot sequences with better autocorrelation and cross-correlation characteristics are included, and wireless terminals can detect cell synchronization information by correlating received information with pilot sequences. Correlation within one cycle (such as one subframe in TD-SCDMA) requires a large amount of calculation, which will increase the power consumption an...

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
IPC IPC(8): H04B7/26
CPCY02D30/70
Inventor 沈旭强刘利平曹强刘丰威
Owner 芯鑫融资租赁(厦门)有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products