Mobile channel estimation for DBV-T COFDM demodulator

Details Mobile channel estimation for DBV-T COFDM demodulator Mobile channel estimation for DBV-T COFDM demodulator

2011-06-28

2011-06-28

Phu, Phuong (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S346000, C375S349000, C375S231000, C370S208000, C455S063100, C455S570000

Reexamination Certificate

active

07970068

ABSTRACT:
A channel estimator for use in a DVB-T system is capable of high Doppler performance without incurring restrictive delay spread limitations, in a hardware efficient manner. A first channel impulse response is generated that has ambiguity due to under-sampling in the frequency domain. A filter is then used to filter scattered pilots to generate a mask that is capable of resolving the ambiguities. In at least one approach, a finite impulse response filter is used during the mask generation process to generate a snapshot of the channel frequency response in non-real time. In another approach, an infinite impulse response filter is used during the mask generation process to generate a channel frequency response in real time.

REFERENCES:
patent: 7801020 (2010-09-01), Shukla et al.

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