Receiving apparatus, receiving method, integrated circuit, digital television receiver, and program

A receiving device and technology for receiving signals, which are applied in digital transmission systems, electrical components, multiplexing communications, etc., can solve the problems of reduced receiving performance and poor equalization accuracy, and achieve the effect of suppressing operation errors.

Active Publication Date: 2010-03-24
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ultimately, equalization accuracy deteriorates, and reception performance decreases accordingly

Method used

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  • Receiving apparatus, receiving method, integrated circuit, digital television receiver, and program
  • Receiving apparatus, receiving method, integrated circuit, digital television receiver, and program
  • Receiving apparatus, receiving method, integrated circuit, digital television receiver, and program

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Embodiment approach

[0048] figure 1 It is a block diagram showing the configuration of the receiving device according to the embodiment. The reception device 100 includes an antenna 101 , a tuner unit 102 , a synchronization unit 103 , an FFT unit 104 , an equalization unit 110 , and a channel characteristic estimation unit 111 .

[0049] The antenna 101 receives a multi-carrier transmission signal transmitted from a transmission station not shown.

[0050] The tuner unit 102 selects a signal of a desired channel from the multi-carrier transmission signal received by the antenna 101, performs frequency conversion, and outputs it as a received signal.

[0051] The synchronization unit 103 estimates signal timing and the like based on the received signal output from the tuner unit 102 , and notifies the FFT unit 104 of the estimated signal timing and the like.

[0052] The FFT unit 104 converts the reception signal in the time domain (time domain) output from the synchronization unit 103 into a ...

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PUM

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Abstract

A receiving apparatus (100) wherein a noise power estimation section (107) estimates noise power contained in a received signal in a frequency area from the received signal. A transmission path property estimation part (111) estimates a transmission path property on the basis of a reference signal contained in the received signal. A tap coefficient calculation section (108) calculates the tap coefficient of a filtering section (109) on the basis of the noise power contained in the received signal and the autocorrelation value of the transmission path property. The filtering section (109) calculates the estimated value of the transmission path property by filtering the transmission path property according to the tap coefficient.

Description

technical field [0001] The present invention relates to a signal received by a multi-carrier transmission method, and relates to a technique for performing adaptive processing on estimated transmission path characteristics. Background technique [0002] The multicarrier transmission scheme is generally known as a transmission scheme well suited to a multipath environment. Because of its excellent characteristics, the OFDM (Orthogonal Frequency Division Multiplexing) method of performing transmission using a plurality of orthogonal carriers is adopted as one of the multi-carrier transmission methods in terrestrial digital broadcasting and wireless LAN (Local Area Network). [0003] Here, a reception system will be described taking terrestrial digital broadcasting as an example. Standards for terrestrial digital broadcasting using the OFDM system include ISDB-T (Integrated Services Digital Broadcasting for Terrestrial) in Japan and DVB-T (Digital Video Broadcasting-Terrestria...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J11/00
CPCH04L27/2647H04L25/022H04L25/0224
Inventor 马赫布卜·良志奴木村知弘
Owner PANASONIC CORP
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