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Title:
WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2008/044629
Kind Code:
A1
Abstract:
A wireless communication apparatus wherein the performance can be prevented from degrading due to the affection of a frequency offset, while the sequence length of Zadoff-Chu sequence (ZC sequence) being kept long. In this wireless communication apparatus, a ZC sequence generating part (11) generates a ZC sequence corresponding to a preamble number that is selected at random and then inputted; a randomizing part (12) randomizes the ZC sequence; a preamble generating part (13) generates a preamble from the randomized ZC sequence; and a radio transmitting part (14) transmits, via an antenna (15), the preamble after subjecting it to predetermined radio transmission processes, such as a D/A conversion, an up-conversion and so on. For example, the randomizing part (12) multiplies the ZC sequence by a PN sequence so as to randomize the ZC sequence.

Inventors:
IWAI TAKASHI
IMAMURA DAICHI
FUTAGI SADAKI
MATSUMOTO ATSUSHI
TAKATA TOMOFUMI
Application Number:
PCT/JP2007/069557
Publication Date:
April 17, 2008
Filing Date:
October 05, 2007
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
IWAI TAKASHI
IMAMURA DAICHI
FUTAGI SADAKI
MATSUMOTO ATSUSHI
TAKATA TOMOFUMI
International Classes:
H04B1/707; H04B7/26; H04J13/00; H04J13/22
Domestic Patent References:
WO2002047304A12002-06-13
Foreign References:
JP2001223670A2001-08-17
JP2006275640A2006-10-12
JP2006298179A2006-11-02
Other References:
TEXAS INSTRUMENTS: "Non synchronized Random Access Sequence Design for E-UTRA", 3GPP TSG RAN WG1 #46, vol. R1-062004, 1 September 2006 (2006-09-01), XP002422898, Retrieved from the Internet
LG ELECTRONICS: "RACH Design for Large Cell Deployment", 3GPP TSG RAN WG1 MEETING #46, vol. R1-062307, 1 September 2006 (2006-09-01), XP003022201, Retrieved from the Internet
POPVIC: "Generalized chirp-like polyphase sequences with optimal correlation properties", IEEE TRANSACTIONS ON INFORMATION THEORY, July 1992 (1992-07-01), pages 1406 - 1409, XP000287157, DOI: doi:10.1109/18.144727
Attorney, Agent or Firm:
WASHIDA, Kimihito (Shintoshicenter Bldg.24-1, Tsurumaki 1-chome,Tama-sh, Tokyo 34, JP)
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