CN1736052B

5G,4G

Title

Synchronisation in multicarrier CDMA systems

Application Number:

CN20028024991

Publication Date:

29-09-2010

Current Assignee:

YANXING BIDEKE CO LTD

Family ID:

27488569

Application Date:

15-10-2002

Declaring Company:

APPLE INC , NORTEL NETWORKS LIMITED

Publication Country:

US

Priority Date:

17-10-2001

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Title

Synchronisation in multicarrier CDMA systems

Application Number:

CN20028024991

Family ID:

27488569

Publication Country:

US

Publication Date:

29-09-2010

Application Date:

15-10-2002

Priority Date:

17-10-2001

Current Assignee:

YANXING BIDEKE CO LTD

Declaring Company:

APPLE INC , NORTEL NETWORKS LIMITED

View on Espacenet goto-link

Abstract  Abstract

A method and device for capturing synchronous and cell selection is performed in the OFDM communication system is provided. performing coarse synchronization to determine the search window. then through measured related to signal sampling point subset and known values between fine synchronization is performed wherein the first signal sample point is in the search window. execute the relative process on the frequency domain of the received signal. In a multiple-output OFDM system each antenna of the OFDM transmitter has a unique known value. sending the known values as pairs of consecutive pilot symbols form each pair of pilot symbols transmitted on the same subset of subcarrier frequencies in the OFDM frame of.

A method and apparatus are provided for performing acquisition synchronization and cell selection within an MIMO-OFDM communication system. A coarse synchronization is performed to determine a searching window. A fine synchronization is then performed by measuring correlations between subsets of signal samples whose first signal sample lies within the searching window and known values. The correlations are performed in the frequency domain of the received signal. In a multiple-output OFDM system each antenna of the OFDM transmitter has a unique known value. The known value is transmitted as pairs of consecutive pilot symbols each pair of pilot symbols being transmitted at the same subset of sub-carrier frequencies within the OFDM frame.

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