Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2008-06-10
2008-06-10
Ahn, Sam K (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
Reexamination Certificate
active
07386055
ABSTRACT:
A multicarrier radio communication technology that enables radio resources to be used effectively, interference-to be suppressed, and a cell search to be performed at high speed, in a multicarrier CDMA system. In this technology, a secondary synchronization code (S-SCH signal) for identifying the group of scrambling codes divided into groups beforehand is frequency multiplexed in a plurality of subcarriers. A secondary synchronization code is coded in the time direction. Subcarriers in which a secondary synchronization code is multiplexed are mutually separated and equally spaced. The number of subcarriers in which a secondary synchronization code is multiplexed can be set to a small value with respect to the total number of subcarriers. A secondary synchronization code is an orthogonal code. On the receiving side, a cell search is carried out using such a frequency multiplexed type S-SCH.
REFERENCES:
patent: 7154973 (2006-12-01), Hanada et al.
patent: 2001/0040882 (2001-11-01), Ichiyoshi
patent: 1028552 (2000-08-01), None
patent: 2000 138657 (2000-05-01), None
patent: 2001 320342 (2001-11-01), None
Hanada et al. Three-Step Cell Search Algorithm for Broadband Multi-carrier CDMA Packet Wireless Access, IEEE, Oct. 2001, G-32-G-37.
International Search Report dated Mar. 4, 2003.
Y. Hanada, et al., “Performance of 3-step Fast Cell Search Algorithm Considering Pilot Channel Structure in Broadband Multi-carrier CDMA Wireless Access”, IEEE, Mar. 7, 2001, pp. 783-784, with partial English translation.
Y. Hanada, et al., “3-Step Fast Cell Search Method and its Performance for Broadband Multi-carrier CDMA Wireless Access”, IEEE, vol. 100, No. 435, Nov. 17, 2000, pp. 49-55, with English Abstract.
Y. Hanada, et al., “3-Step Cell Search Performance using frequency multiplexed SCH for Broadband Multi-carrier CDMA Wireless Access”, IEEE, Jul. 2001, pp. 73-78, with English Abstract.
3GPP TS 25.214 V3.8.0 (Sep. 2001), “Physical Layer Procedures (FDD)”, 2001, pp. 1-50.
Morita Minori
Sumasu Atsushi
Ahn Sam K
Dickinson Wright PLLC
Matsushita Electric - Industrial Co., Ltd.
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