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Data receiving method for TD-SCDMA system

A data receiving method and a code division multiple access technology are applied in the data receiving field of a time division synchronous code division multiple access system, and can solve problems such as deterioration of receiver performance.

Inactive Publication Date: 2009-02-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the channel estimation of the mid-amble part can no longer be completely equivalent to the channel impulse response characteristics of the data part on both sides, directly using it to participate in the detection of the data part will lead to the deterioration of the receiver performance

Method used

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  • Data receiving method for TD-SCDMA system
  • Data receiving method for TD-SCDMA system
  • Data receiving method for TD-SCDMA system

Examples

Experimental program
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Embodiment Construction

[0027] The specific implementation manners of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] refer to image 3 , illustrating a data receiving method for a time division synchronous code division multiple access system according to an embodiment of the present invention. Such as image 3 As shown, the data receiving method includes the following steps: S302, transforming the frame structure of the time-division synchronous code division multiple access system into a frame structure comprising two training sequences, and using the two training sequences to modify the frame structure of the time-division synchronous code division multiple access system. Perform channel estimation on the multiple data parts in the frame structure; and S304, respectively detect the multiple data parts according to the channel estimation results of the multiple data parts, so as to receive the multiple data parts.

[0029] Wherein, st...

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Abstract

The invention discloses a data receive method used for a time division-synchronous code division multiple access (TD-SCDMA) system, comprising the following steps: S302, reconstructing a frame structure of the time division-synchronous code division multiple access (TD-SCDMA) system into a frame structure including two training sequences, and respectively utilizing the two training sequences for channel estimation to a plurality of data divisions in the frame structure of the time division-synchronous code division multiple access (TD-SCDMA) system; and S304, detecting the plurality of data divisions for receiving a plurality of data divisions according to channel estimation results of the plurality of data divisions respectively. The invention can accurately detect the received data under the condition of rather high terminal movement velocity, particularly under high speed moving.

Description

technical field [0001] The present invention relates to the communication field, and more specifically relates to a data receiving method for a time division synchronous code division multiple access system. Background technique [0002] The basic frame structure of the existing Time Division Synchronization Code Division Multiple Access (TD-SCDMA) system is as follows: figure 1 As shown, it is mainly composed of a 352-chip data part at each end, a mid-amble part with a length of 144 chips in the middle, and a guard interval (GP) with a length of 16 chips at the end. Among them, the data part may also include a transport block format combination indicator (TFCI), a power control command word (TPC), and a synchronization control command word (SS), and its position distribution is as follows figure 2 shown. [0003] Under the frame structure of the existing TD-SCDMA system, the receiver uses the Mid-amble part for channel estimation, and thinks that the channel fading chara...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/03
Inventor 林伟耿鹏江海李萍
Owner ZTE CORP