Patent Number: 6,434,205

Title: Digital broadcast receiver using weighted sum of channel impulse response data to adjust sampling window

Abstract: A digital broadcast receiver receiving a multi-carrier signal controls the timing of a sampling window, used in demodulation of the multi-carrier signal, according to a channel impulse response waveform obtained by processing of a synchronization signal occurring in the multi-carrier signal. The values in the channel impulse response waveform are multiplied by corresponding weighting coefficients, the resulting products are added to obtain a weighted sum, and the timing of the sampling window is adjusted according the weighted sum. Under a wide variety of reception conditions, this control scheme avoids inter-symbol interference, and leaves adequate timing margins to accommodate new signal components that may appear.

Inventors: Taura; Kenichi (Tokyo, JP), Ohkubo; Tadatoshi (Tokyo, JP), Ishida; Masayuki (Tokyo, JP)

Assignee: Mitsubishi Denki Kabushiki Kaisha

International Classification: H04H 1/00 (20060101); H04L 007/00 ()

Expiration Date: 08/13/2019