Multiplex communications – Generalized orthogonal or special mathematical techniques
Reexamination Certificate
2011-01-04
2011-01-04
Pham, Chi H (Department: 2471)
Multiplex communications
Generalized orthogonal or special mathematical techniques
C370S241000, C370S437000
Reexamination Certificate
active
07864658
ABSTRACT:
A multicarrier communication method selects carriers on the basis of an SN-ratio and the balancing of a transmission line. Available carriers are selected in accordance with the balancing of the balanced transmission line, in which the balancing is measured at either a sending terminal or a receiving terminal or alternatively at both, and the SN-ratio is measured between the sending terminal and the receiving terminal. Additionally, a modulation method having the greatest permissible multivalue is selected for each of the carriers, wherein the carriers are selected in light of the SN-ratio and balancing, or alternatively in a highest-to-lowest order of frequency. Transmission power is controlled for each of the carriers to suppress radiated emission, and the SN-ratio and balancing are measured at predetermined time intervals to renew the selection of the carriers and the selection of the modulation methods.
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Hanada Tsunehiro
Ichihara Fumio
Igata Yuji
Koga Hisao
Maki Masahiro
Adhami Mohammad S
Panasonic Corporation
Pham Chi H
Wenderoth , Lind & Ponack, L.L.P.
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