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Receiving apparatus, receiving method, and receiving system with channel estimation

A receiving device and a preamble technology, applied in transmission systems, baseband systems, multi-frequency code systems, etc., can solve the problems that the center position control of the filter cannot be implemented, and cannot be implemented.

Active Publication Date: 2011-12-28
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0142] As can be seen from the above, in the receiving apparatus, for the interpolation filter 39 (refer to Figure 4 ) control of the position of the filter center (hereinafter, also referred to as "filter center position control") cannot be implemented until L1 is decoded to identify (acquire) the pilot pattern of the data symbol
[0143] Therefore, the receiving device cannot implement filter center position control until L1 is decoded after starting OFDM signal reception

Method used

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  • Receiving apparatus, receiving method, and receiving system with channel estimation
  • Receiving apparatus, receiving method, and receiving system with channel estimation
  • Receiving apparatus, receiving method, and receiving system with channel estimation

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Embodiment Construction

[0236] Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0237] Embodiment of the receiving device of the present disclosure

[0238] Figure 11 is a block diagram showing the configuration of an embodiment of the reception device according to the present disclosure.

[0239] Note that in the figure, with image 3 Parts corresponding to the case of the shown existing receiving apparatus are respectively denoted by the same reference numerals, and, hereinafter, description thereof is appropriately omitted for the sake of simplification.

[0240] Figure 11 The receiving device shown with the image 3 The case of the shown conventional receiving apparatus is the same in that it includes constituent elements from the antenna 11 to the FFT section 18 , the transmission path distortion correction section 20 and the error correction section 21 .

[0241] but, Figure 11 The receiving device shown with the image...

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Abstract

A receiving apparatus includes: a transmission path characteristics estimating section obtaining pre-interpolation transmission path characteristic data as estimate values for transmission path characteristics as characteristics of a transmission path of an OFDM signal for transmission symbols of pilot signals by using the pilot signals contained in the OFDM signal, and filtering the pre-interpolation transmission path characteristic data by using an interpolation filter, thereby obtaining transmission path characteristic data as estimate values for transmission path characteristics for transmission symbols of the OFDM signal; a distortion correcting section performing distortion correction for the OFDM signal by using the transmission path characteristic data; and a filter controlling section controlling a pass band of the interpolation filter.

Description

technical field [0001] The present disclosure relates to a receiving device, a receiving method, and a receiving system. More particularly, the present disclosure relates to a reception device, a reception method, and a reception system each capable of preventing deterioration in estimation accuracy of a transmission path characteristic, which is a characteristic of a transmission path of an OFDM signal. Background technique [0002] Terrestrial digital broadcasting and the like employ an Orthogonal Frequency Division Multiplexing (OFDM) system as a modulation system for modulating data (signals). [0003] In OFDM systems, digital modulation such as Phase Shift Keying (PSK) or Quadrature Amplitude Modulation (QAM) is implemented. In this digital modulation, a large number of orthogonal subcarriers are provided within a transmission band, and predetermined data are assigned to the amplitude and phase of the subcarriers, respectively. [0004] In the OFDM system, since the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L25/02
CPCH04L27/2647H04L25/0226H04L5/0048H04L25/0232H04L5/0007
Inventor 横川峰志境仁志T·马修
Owner SONY CORP