Channels estimation for multiple input—multiple...

Details Channels estimation for multiple input—multiple... Channels estimation for multiple input—multiple...

2005-02-01

2005-02-01

Pham, Chi (Department: 2667)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

C370S210000

Reexamination Certificate

active

06850481

ABSTRACT:
The distortion in the sub-carrier signals is determined by transmitting known values that are incorporated into the preamble portion of the frame and/or are incorporated into pilot symbols that are inserted into the data portion of the frame. The receiver typically receives these known values in a distorted form and then processes the distorted values together with the original known values to obtain a channel response. The channel response is then used to estimate the frequencies at which the channels are received.

REFERENCES:
patent: 5469465 (1995-11-01), Birchler et al.
patent: 5603107 (1997-02-01), Gottfried et al.
patent: 5973642 (1999-10-01), Li et al.
patent: 6219334 (2001-04-01), Sato et al.
patent: 6621851 (2003-09-01), Agee et al.

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