Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2007-04-03
2007-04-03
Patel, Jay K. (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S135000, C375S147000
Reexamination Certificate
active
10380222
ABSTRACT:
A subcarrier transmission ON/OFF control system based on an MC-CDMA system capable of improving information transmission efficiency and reception performance while keeping the number of transmission bits constant. Furthermore, a subcarrier transmit power control system based on an MC-CDMA system or OFDM system capable of improving information transmission efficiency and reception performance. The former system based on the MC-CDMA system does not carry out transmission through subcarriers of low reception quality, with no transmit power assigned (transmission OFF), assigns the corresponding transmit power to subcarriers with transmit power assigned (transmission ON) and carries out transmission (subcarrier transmission ON/OFF control) The latter system based on the MC-CDMA system or OFDM system carries out transmission according to a reception level of each subcarrier on the receiving side, with greater transmit power assigned to subcarriers with higher reception levels and smaller transmit power assigned to subcarriers with lower reception levels (subcarrier reverse transmit power control).
REFERENCES:
patent: 5832387 (1998-11-01), Bae et al.
patent: 6275522 (2001-08-01), Johnson et al.
patent: 6721569 (2004-04-01), Hashem et al.
patent: 7039120 (2006-05-01), Thoumy et al.
patent: 10155031 (1998-06-01), None
patent: 11068630 (1999-03-01), None
patent: 11163822 (1999-06-01), None
patent: 11317723 (1999-11-01), None
patent: 2000358008 (2000-12-01), None
patent: 2001144724 (2001-05-01), None
Maeda et al. “A Delay Profile Information Based Subcarrier Power Control Combined With A Partial Non-Power Allocation Technique For OFDM/FDD Systems” Personal, Indoor and Mobile Radio Communications, 2000. PIMRC 2000. The 11th IEEE International Symposium, vol. 2, Sep. 18-21, 2000 pp. 1380-1384.
T. Yoshiki, et al.; “Performance of a Multilevel Transmit Power Control Scheme for the OFDM Subcarrier Adaptive Modulation System”, Technical Report of IEICE, SSE2000-71, RCS2000-06(2000-07), pp. 63-67 with English Abstract.
N. Maeda, et al.; “Performance of the Delay Profile Information Channel based Subcarrier Transmit Power Control Technique for OFDM/FDD Systems”, Transaction of Institute of Electronics, Information and Communication Engineers, B, vol. J84-B, No. 2, Feb. 2001, pp. 205-213 with partial English translation.
Odom Curtis
Patel Jay K.
LandOfFree
Multi-carrier transmission apparatus, multi-carrier... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-carrier transmission apparatus, multi-carrier..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-carrier transmission apparatus, multi-carrier... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3753478