Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2007-10-23
2007-10-23
Pham, Chi (Department: 2616)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S348000, C370S350000, C370S443000, C375S219000
Reexamination Certificate
active
09914781
ABSTRACT:
A multi-carrier CDMA transmission system signal format that reproduces data symbols, aligns the reproduced data symbols along a frequency axis, multiplies the reproduced data symbols by a spreading code, and conducts multiplex transmission of data using a plurality of sub-carriers of different frequencies, in which a common pilot symbol inserted in a transmission signal for estimating a variation in channel and estimating a channel common to each of a plurality of users, and a user-specific individual pilot symbol transmitted along a channel different from the above-described channel.
REFERENCES:
patent: 6084871 (2000-07-01), Engstrom et al.
patent: 6175558 (2001-01-01), Miya
patent: 6188679 (2001-02-01), Sato
patent: 6282185 (2001-08-01), Hakkinen et al.
patent: 6347220 (2002-02-01), Tanaka et al.
patent: 6385181 (2002-05-01), Tsutsui et al.
patent: 6628698 (2003-09-01), Oda
patent: 6643333 (2003-11-01), Jung et al.
patent: 6728307 (2004-04-01), Derryberry et al.
patent: 6904283 (2005-06-01), Li et al.
patent: 6937665 (2005-08-01), Vandenameele
patent: 6999467 (2006-02-01), Krauss et al.
patent: 1 252 234 (1989-04-01), None
patent: 0795969 (1997-09-01), None
patent: 10-28077 (1998-01-01), None
patent: 11-514827 (1999-12-01), None
patent: 2000-201134 (2000-07-01), None
patent: WO 96/00471 (1976-01-01), None
patent: WO 9810542 (1998-03-01), None
patent: WO 98/10542 (1998-03-01), None
Yukiko Hanada, et al., Proceedings of the 1999 IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, p. 369, “OFDM/DS-CDMA Packet Musen Access Ni Oekru Pilot Douki Kenha”, Mar. 25-28, 1999.
Hiroyuki Arata, et al., Technical Research Report, RCS99-131,The Institute of Electronics, Information and Communication Engineers, “Agari Link Broad Band Musen Packet Densou Ni Okeru SC/DS-CDMA, MC-CDMA Houshiki No Tokusei Hikaku”, Oct. 15, 1999.
Hiroyuki Atarashi, et al., Technical Report of IEICE, A-P99-134, RCS99-131, The Institute of Electronics, Information and Communication Engineers, vol. 99, No. 357, pp. 71-77, “Performance Comparisons of Coherent SC/DS-CDMA, MC/DS-CDMA on Up-Link Broadband Radio Packet Transmission”, Oct. 1999 (with English Abstract).
Seiichi Sampei, The Transactions of the Institute of Electronics, Information and Communication Engineers, vol. J72-B-II, No. 1, pp. 7-15, “Rayleigh Fading Compensation Method for 16QAM Modem in Digital Land Mobile Radio Systems”, Jan. 1989 (with English translation).
Yukiko Hanada, et al., Proceedings of the 1999 IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, p. 369, “OFDM/DS-CDMA Packet Musen Access Ni Oekru Pilot Douki Kenha”, Mar. 25-28, 1999 (submitting English Translation only) (“Coherent Detection With Pilot Symbol in OFDM/DS-CDMA Packet Radio Access”, pp. 4-3).
Hiroyuki Atarashi, et al., Technical Report of IEICE, A-P99-134, RCS99-131, The Institute of Electronics, Information and Communication Engineers, vol. 99, No. 357, pp. 71-77, “Performance Comparisons of Coherent SC/DS-CDMA, MC/DS-CDMA on Up-Link Broadband Radio Packet Transmission”, Oct. 1999 (submitting English translation only, pp. 4-16).
Hara, S. et al., “Spread Spectrum-Based Subcarrier Recovery Method for Multi-Carrier Code Division Multiplexing System”, European Transactions on Telecommunications, Wiley & Sons, vol. 10, No. 4, Jul. 1999, pp. 369-376.
Dong-Seog, Han, et al., “On the Synchronization of MC-CDMA System for Indoor Wireless Communications”, Vehicular Technology Conference, vol. 2, No. 19, Sep. 1999, pp. 693-697.
Kaiser, S. et al., “Performance of Multi-Carrier CDMA Systems with Channel Estimation in Two Dimensions”, Personal, Indoor and Mobile Radio Communications, vol. 1, No. 1, Sep. 1997, pp. 115-119.
Abeta Sadayuki
Atarashi Hiroyuki
Sawahashi Mamoru
Jagannathan Melanie
NTT DoCoMo Inc.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Pham Chi
LandOfFree
Signal format in multi-carrier CDMA transmission system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Signal format in multi-carrier CDMA transmission system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signal format in multi-carrier CDMA transmission system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3835132