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Apparatus and method for detecting frame synchronous and coding group/cording quantity

A coding group, frame synchronization technology, applied in the direction of selection device, synchronization signal speed/phase control, communication between multiple stations, etc., can solve the problems of synchronization failure, identification difficulty, etc.

Inactive Publication Date: 2005-01-19
LG ELECTRONICS INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this case, the identification of the energy at point C obtained from the noisy environment becomes quite difficult since the energy can be reduced to another form of noise
[0020] Also, since the initial cell searcher counts 2 or 3 frames, although it may be possible to start slot synchronization on the last frame offset, the synchronization of the later stages (frame synchronization and detection of code group or number of codes) may fail

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  • Apparatus and method for detecting frame synchronous and coding group/cording quantity
  • Apparatus and method for detecting frame synchronous and coding group/cording quantity
  • Apparatus and method for detecting frame synchronous and coding group/cording quantity

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Embodiment Construction

[0051] The structure of the frame synchronization and code group or code number detection apparatus with timing offset / frequency tracking capability according to the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same drawing reference numerals are used for the same components even in different drawings. Matters defined in the description are provided only to aid in a comprehensive understanding of the invention. Therefore, it is apparent that the present invention can be carried out without those defined matters. Also, well-known functions and constructions are not described in detail since they would not unnecessarily obscure the invention.

[0052] first, Figure 4 is a block diagram illustrating frame synchronization and code group or code number detection means according to the present invention.

[0053] Such as Figure 4 As shown, the device includes: a despreader 100 at that time, which des...

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Abstract

The present invention relates to an apparatus for synchronizing frame and detecting code group / number that is useful for an initial cell search of an asynchronous IMT-2000 system. To this end, the present invention discloses a method for synchronizing frame and detecting code group / number, including the steps of: synchronizing a slot at the time of a system booting, wherein the system obtains time offsets by using at least two despreaders with different timings from each other; detecting energies and time offsets based on the designated position of the slot timing; and detecting frame synchronization and code group / number by using the detected energies and information.

Description

technical field [0001] The present invention relates to a device and method for frame synchronization and encoding group or encoding quantity detection applicable in 3GPP (Global Cooperation Project) asynchronous International Mobile Telecommunications (IMT)-2000 system, especially relates to a tracking function Apparatus and method for frame synchronization and code group or code number detection to minimize degradation typically caused by frequency offset between terminal received signal and base station internally generated signal. Background technique [0002] Firstly, the typical use of the frame synchronization and code group or code number detection means in the related art will be described. [0003] figure 1 is a block diagram illustrating the conventional frame synchronization and code group or code number detection process; [0004] As shown in the figure, the device comprises a time despreader 10 for despreading the received input by obtaining the position of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L7/08H04B1/7083
CPCH04B1/7083H04L7/08
Inventor 宋在昱
Owner LG ELECTRONICS INC