Jefferson IP Law, LLP
Subcarrier allocation apparatus and method, subcarrier de-allocation apparatus and method in OFDM system
A subcarrier allocating apparatus allocating data to be transmitted to a plurality of orthogonal subcarriers in an orthogonal frequency division multiplexing (OFDM) system is provided. The apparatus includes a logical index generator generating a logical index for allocating a data subcarrier to a physical index, the logical index being included with only data subcarriers and the physical index indicating a location of a substantial subcarrier within a symbol, an intermediate index converter converting the logical index into an intermediate index by performing a given operation on the generated logical index and a pilot location constant, and a physical index converter converting the intermediate index into a physical index based on the number of data subcarriers on the left and right sides of a null subcarrier for insertion of a guard interval formed by the null subcarrier.
KTFreetel Co., Ltd. KT Corporation Hanaro Telecom, Inc. Samsung Electronics Co., Ltd. SK Telecom Co., Ltd. Electronics and Telecommunications Research Institute
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inventional inventional inventional
Young-Ha Youn-Ok Eon-Young Jun-Woo Su-Chang
Lee Park Hong Kim Chae