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Apparatus and method for reducing papr of preamble signal in digital broadcasting system

a technology of digital broadcasting system and preamble signal, applied in the direction of orthogonal multiplex, multiplex communication, television signal transmission by single/parallax channels, etc., can solve the problems of system performance reduction and papr reduction performance reduction, and achieve the effect of reducing the papr of the preambl

Inactive Publication Date: 2009-10-29
SAMSUNG ELECTRONICS CO LTD
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Benefits of technology

[0028]The present invention has been designed to address at least the above-mentioned problems and / or disadvantages and to provide at least the advantages described below. Accordingly, an aspect of the present invention provides a transmission method and apparatus capable of reducing PAPR of a preamble in an OFDM system.
[0029]Another aspect of the present invention provides a transmission method and apparatus capable of reducing PAPR of a preamble in a digital broadcasting system using an OFDM transmission scheme.

Problems solved by technology

This high-PAPR signal may deviate from a linear operation range of a high-power linear amplifier, and a signal that has passed through the high-power linear amplifier may often suffer from distortion, causing a reduction in system performance.
. . pN-1 have high amplitudes, peaks of other signals may increase again in the clipping process, thereby causing a reduction in PAPR reduction performance.

Method used

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  • Apparatus and method for reducing papr of preamble signal in digital broadcasting system

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Embodiment Construction

[0041]The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of embodiments of the present invention. Accordingly, the description includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. Further, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

[0042]The terms and words used in the following description and claims are not limited to dictionary meanings, but are merely used by the inventor to enable a clear and consistent understanding of the invention. It should be apparent to those skilled in the art that the following description of exemplary embodiments of the present invention are provided for illu...

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Abstract

A method and apparatus for reducing a Peak to Average Power Ratio (PAPR) in a digital broadcasting system are provided. Reserved tones are determined, and the determined reserved tones are used to transmit a signal having an impulse characteristic in locations of sub-carriers that do not collide with a pilot signal of a preamble in a frame. The signal having the impulse characteristic is transmitted through the reserved tones in a symbol interval for which the preamble is transmitted.

Description

PRIORITY[0001]This application claims priority under 35 U.S.C. §119(a) to a Korean Patent Application filed in the Korean Intellectual Property Office on Apr. 28, 2008 and assigned Serial No. 10-2008-0039137, the entire disclosure of which is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates generally to a transmission apparatus and method in a digital broadcasting system. More particularly, the present invention relates to an apparatus and method for reducing a Peak to Average Power Ratio (PAPR) of a preamble signal in a digital broadcasting system.[0004]2. Description of the Related Art[0005]Digital broadcasting systems are broadcasting systems that use digital transmission technologies, such as Digital Audio Broadcasting (DAB), Digital Video Broadcasting (DVB) and Digital Multimedia Broadcasting (DMB).[0006]Among them, the DVB system, which is a European digital broadcasting technology, is a transmission...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04J11/00H04B7/02
CPCH04L27/2633H04L27/2618H04L27/26522H04N7/08H04N7/12H04N7/015H04L27/26
Inventor YUN, SUNG-RYULKWON, HWAN-JOONKIM, JAE-YOELLIM, YEON-JULEE, HAK-JUJEONG, HONG-SILMYUNG, SEHO
Owner SAMSUNG ELECTRONICS CO LTD
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