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Method and apparatus of establishing a synchronisation signal in a communication system

A technology for synchronous signals and communication systems, applied in transmission systems, multi-frequency code systems, modulated carrier systems, etc., can solve problems such as undefined ZC root sequences

Active Publication Date: 2008-11-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this document, a Zadoff-Chu sequence of length 72 is suggested, but no specific ZC root sequence is defined

Method used

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  • Method and apparatus of establishing a synchronisation signal in a communication system
  • Method and apparatus of establishing a synchronisation signal in a communication system
  • Method and apparatus of establishing a synchronisation signal in a communication system

Examples

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Embodiment Construction

[0041] The downlink signal based on the OFDM transmission technology, for example, the downlink signal in the E-UTRA cellular system specifies that the center frequency of the available bandwidth, the so-called DC sub-carrier, is not used for transmission. The reason lies in the potential local-oscillator leakage that occurs at the transmitter of the base station or the receiver of the mobile user equipment. This potential local oscillator leakage will cause serious interference to the DC sub-carrier, making the DC sub-carrier almost unusable.

[0042]The E-UTRA cellular system uses multiple (three) primary synchronization (P-SCH) signals on the downlink (DL) to support OFDM symbol timing synchronization in the UE. The three P-SCH signals are bound to the cell identity group, for example, it can be one-to-one corresponding to the three cell identities in the cell identity group, and the timing synchronization and information transmission can be realized simultaneously in the above...

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PUM

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Abstract

The invention relates to a method of building synchronous signals in a communication system, comprising: defining a group of discrete fourier frequency coefficients; converting the group of discrete fourier frequency coefficients into discrete time coefficients; using the discrete time coefficients as the synchronous signals in the communication system. According to the embodiment of the invention, symmetry of the signals is fully utilized. Preferably, center frequency is not used in the transmission, namely DC carrier. The invention also relates to a transmitter and a received in the communication system.

Description

Technical field [0001] The present invention relates to communication and synchronization technology, in particular to synchronization in, for example, an OFDM system. Background technique [0002] 3GPP Technical Specification, 3GPP TS 36.211 V1.0.0 Third Generation Cooperation Organization, Technical Specification Group Radio Access Network, Physical Channel and Modulation (Version 8), France, March 2007 (3GPP Technical Specification, 3GPP TS 36.211 v1.0.0, 3 rd The Generation Partnership Project, Technical Specification Group Radio Access Network, Physical Channels and Modulation (Release 8), France, March 2007) describe the physical channels of the extended Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA). [0003] When determining the synchronization scheme of a communication system, of course, many parameters need to be weighed, so as to optimize the system performance in a certain sense. Whether it is for a specific synchronization performance, o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26
CPCH04L27/2613H04J13/0062H04J13/107H04J13/14
Inventor 布兰尼斯拉夫·波波维奇
Owner HUAWEI TECH CO LTD
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