Echo profile probe

Details Echo profile probe Echo profile probe

2005-09-16

2009-06-02

Ngo, Ricky (Department: 2416)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

C370S252000, C375S260000

Reexamination Certificate

active

07542411

ABSTRACT:
In an orthogonal frequency division multiplex (OFDM) communication network, a node transmits an echo profile probe to other nodes in the network. The echo profile probe is a message that allows characterization of the unique echo profile through the communication channel between each node pair. The echo profile is used to calculate the cyclic prefix length needed for optimum communication from one node to the other.

REFERENCES:
patent: 6487241 (2002-11-01), Cole
patent: 6856683 (2005-02-01), Murphy et al.
patent: 6876675 (2005-04-01), Jones et al.
patent: 7123580 (2006-10-01), Tang et al.
patent: 7292647 (2007-11-01), Giannakis et al.
patent: 2004/0081191 (2004-04-01), Kwon et al.
patent: 2006/0013325 (2006-01-01), Agrawal et al.

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