CARRIER ALLOCATION METHOD IN OFDM SYSTEM AND TRANSMITTING APPARATUS USING THE METHOD

WIPO Patent Application WO2006068349

A3

The present invention relates to a method for allocating subcarriers in an orthogonal frequency division multiplex (OFDM) system, and a transmitter thereof. In the OFDM system according to an exemplary embodiment of the present invention, the subcarrier allocation is performed in the buffer (10) before a modulation mapping operation is performed according to a modulation method such that the delay may not be generated in the subchannel formed on the symbol axis. The delay corresponding to the symbols is prevented without using any additional hardware for eliminating the delay generated when the subcarriers are allocated to the subchannel formed on the symbol axis.

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PARK HYEONG-SOOK (KR)
PARK YOUN-OK (KR)

PCT/KR2005/001380

November 09, 2006

May 11, 2005

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KOREA ELECTRONICS TELECOMM (KR)
SAMSUNG ELECTRONICS CO LTD (KR)
KT CORP (KR)
SK TELECOM CO LTD (KR)
KT FREETEL CO LTD (KR)
HANARO TELECOM INC (KR)
PARK HYEONG-SOOK (KR)
PARK YOUN-OK (KR)

H04L27/26

CHEONG YUI WONG ET AL.: "Multiuser subcarrier allocation for OFDM transmission using adaptive modulation", IEEE 49TH HOUSTON VEHICULAR TECHNOLOGY CONFERENCE. TEXAS, USA, 16 May 1999 (1999-05-16) - 20 May 1999 (1999-05-20), PISCATAWAY, NJ, USA, pages 479 - 483, XP000899278
PIETRZYK S. AND JANSSEN G.J.M.: "Multiuser subcarrier allocation for QoS provision in the OFDMA systems", IEEE 56TH VEHICULAR TECHNOLOGY CONFERENCE. VTC 2002-FALL. VANCOUVER, CANADA, 24 September 2002 (2002-09-24) - 28 September 2002 (2002-09-28), NEW YORK, USA, pages 1077 - 1081, XP010608981

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