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Method, system and device for demodulating signal

A signal demodulation and symbol number technology, which is applied in the field of signal demodulation and can solve the problems of pilot frequency transmission and signal demodulation of LTE system of R9 and R10 versions that cannot be realized.

Active Publication Date: 2013-07-31
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the pilot transmission and signal demodulation of R9 and R10 LTE systems cannot be realized in the existing technology

Method used

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  • Method, system and device for demodulating signal
  • Method, system and device for demodulating signal
  • Method, system and device for demodulating signal

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Embodiment Construction

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0048] The core idea provided by the embodiment of the present invention is: by introducing a dedicated pilot pattern set and a dedicated pilot pattern, the dedicated pilot transmission and signal demodulation of the R9 and R10 version LTE systems are realized.

[0049] Embodiment 1 of the present invention provides a method for sending a data packet, which is applied in a system including a base station, a relay node, and a UE. The specific process is as follows f...

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Abstract

The invention discloses a method for demodulating a signal. The method comprises the following steps that: a base station judges the type of a transmission sub-frame; if the transmission sub-frame is a special sub-frame, the base station selects a corresponding special pilot pattern set for the special sub-frame; the base station selects a special pilot pattern from the special pilot pattern set according to a downlink transmission mode supported by UE and the number of transport stream, and notifies the UE of the downlink transmission mode and the number of the transport stream; and the basestation processes the data and the special pilot according to the selected special pilot pattern and sends the processed signal to the UE, so that the UE demodulates the received signal. Through the method, the special pilot pattern set and the special pilot patterns are introduced, and the special pilot transmission and the signal demodulation of an LTE system of version R9 and version R10 are realized.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a signal demodulation method, system and device. Background technique [0002] MIMO (Multiple-Input Multiple-Output, technology, as an important physical layer multi-antenna technology to improve transmission quality and efficiency, plays an important role in the new generation of communication systems. Various MIMO technologies such as transmit diversity, spatial multiplexing and beamforming have been Applied in 3GPP LTE (3rdGeneration Partnership Project Long Term Evolution, 3rd Generation Partnership Project Long Term Evolution) system. In LTE system, transmit diversity and space diversity support up to 4 antenna ports, and UE (User Equipment, user equipment) adopts The common reference signal completes the measurement and the demodulation of the signals of each antenna port, and the beamforming uses the dedicated reference signal to demodulate the user data. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04B7/08H04L27/26
Inventor 徐婧缪德山拉盖施肖国军
Owner DATANG MOBILE COMM EQUIP CO LTD
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