Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2007-06-26
2007-06-26
Payne, David C. (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S222000, C375S259000, C341S123000, C455S059000
Reexamination Certificate
active
09878547
ABSTRACT:
A method of communicating across a channel includes receiving information having a known bandwidth and a known spectrum. The information is preferably in the form of a multicarrier modulated signal, e.g., a DMT signal. In one aspect, this information is received at a receiver having a reduced channel bandwidth. An aliasing spectrum can be calculated based on the known spectrum and the frequency difference between the known bandwidth and the reduced-channel bandwidth. The received information can then be modified based upon the aliasing function to compensate for alias distortion. For example, the received information can be modified by modifying the noise component or signal-to-noise ratio of the received information.
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Ibrahim Yaser M.
Mujica Fernando A.
Polley Michael O.
Redfern Arthur J.
Warke Nirmal C.
Brady W. James
File Erin M.
Payne David C.
Shaw Steven A.
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