Synchronization method and equipment for multi-carrier communication system

A multi-carrier communication and frame synchronization technology, applied in the field of communication, can solve the problems of not being able to fully exploit performance gains, and not being able to make full use of the full sequence information
CN101409700AInactive Publication Date: 2009-04-15BEIJING UNIV OF POSTS & TELECOMM +1
4 Cites 16 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING UNIV OF POSTS & TELECOMM
Publication Date
2009-04-15
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a synchronous method of a multi-carrier communication system and a device thereof. A non-repeated polynomial sequence synchronous symbol is sent out by a sending terminal. Polynomial conversion treatment is implemented on the received signal at a receiving end, and frame synchronization and frequency offset estimation are implemented. An estimated frequency offset value substitutes into an initial receiving signal for the compensation. Finally, the compensated receiving signal is interrelated with a local synchronous sequence of the synchronous symbol length to finish the symbol synchronization process. The non-repeated polynomial sequence is only sent out at the sending terminal as the synchronous symbol for the timing estimation and the frequency offset estimation. On the basis of not infecting the frame synchronization and the frequency offset synchronization, the timing synchronous precision of the symbol is greatly improved. And the synchronous method and the device thereof have the advantages of simple algorithm, low calculation complexity and good synchronous effect.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to the technical field of communication, in particular to a multi-carrier communication system synchronization method and equipment. Background technique

[0002] With the development of wireless communication technology, multi-carrier technology (especially Orthogonal Frequency Division Multiplexing technology) has been widely used not only in the field of broadcast digital audio and video because of its high spectrum utilization rate and effective resistance to multipath. , and has been introduced into the standards of wireless local area network and wireless metropolitan area network. In the Long Term Evolution (LTE) research initiated by the 3rd Generation Partnership Project (3GPP), Orthogonal Frequency Division Multiplexing (OFDM) has been adopted as a downlink multiple address mode.

[0003] The synchronization process of the multi-carrier system includes frame synchronization, carrier synchronization and symbol s...

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