Multiplex communications – Communication techniques for information carried in plural...
Reexamination Certificate
2004-07-21
2009-10-06
Pham, Chi H (Department: 2416)
Multiplex communications
Communication techniques for information carried in plural...
C370S204000, C370S537000
Reexamination Certificate
active
07599390
ABSTRACT:
A high-speed communications system utilizes approximate bit-loading during data transmission in a channel. In one embodiment, a plurality of parallel data preparation circuits in a data transmission circuit receive respective subsets of a data stream, each of the respective subsets of the data stream having a data rate that is less than a data rate of the data stream. Converters in the data preparation circuits convert the respective subsets of the data stream into respective analog signals. Multipliers in the data preparation circuits multiply the respective analog signals by respective vectors to produce respective sub-channel signals. At least a frequency band in the spectrum corresponding to one of the respective sub-channel signals partially overlaps at least a frequency band for at least one other of the respective sub-channel signals. The respective sub-channel signals are combined prior to transmission.
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Morgan & Lewis & Bockius, LLP
Pham Chi H
Rambus Inc.
Wong Warner
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