Method and apparatus for estimating a channel based on...

Details Method and apparatus for estimating a channel based on... Method and apparatus for estimating a channel based on...

2007-12-11

2007-12-11

Nguyen, Lee (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Having measuring, testing, or monitoring of system or part

C455S063100, C375S231000

Reexamination Certificate

active

10177732

ABSTRACT:
A method and apparatus are disclosed for equalizing a channel using improved channel estimates. The present invention assumes that fading will follow a statistical model and obtains an improved channel estimate using one or more basis functions to describe the channel based on known channel statistics. A Karhunen-Loeve expansion can be used for channel estimation to describe the channel. Waveforms are selected that are matched to characteristics of the channel, such as transmission waveforms whose energy is largely restricted to a bandwidth assigned to the channel. Coefficients are estimated for the basis functions using real-time data.

REFERENCES:
patent: 6263029 (2001-07-01), Alard et al.
patent: 6674740 (2004-01-01), Siala
Garbow et al., “Matrix Eigensystem Routines—EISPACK Guide Extension,” Lecture Notes in Computer Science, Section 2.1.5, 22, (1977).

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