Feedback-type channel estimation method and a device based...

Details Feedback-type channel estimation method and a device based... Feedback-type channel estimation method and a device based...

2004-08-13

2008-12-09

Vo, Don N (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S340000

Reexamination Certificate

active

07463691

ABSTRACT:
The invention provides a feedback-type channel estimation method and device based on a PN sequence and a pilot frequency in an OFDM system, said method obtains an impulse channel estimation of this OFDM symbol by obtaining a channel impulse response of a pseudo-random (PN) sequence of a received signal; then by obtaining a channel estimation of the pilot frequency symbol; and then by combining the former two results with a channel estimation of a previous OFDM symbol. The new channel estimation method of this invention can complete the interpolation function It has the advantages of high performances and low complexity, and is particular useful for OFDM system in high speed and long delay multi-path environment.

REFERENCES:
patent: 6134280 (2000-10-01), Matui
patent: 2003/0043887 (2003-03-01), Hudson
patent: 2004/0174940 (2004-09-01), Kim et al.

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