PREAMBLE TRANSMISSION AND RECEPTION METHOD AND APPARATUS FOR OFDM SYSTEM
First Claim
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1. A preamble transmission method comprising:
- generating a preamble block including at least one pair of a code block having control information and a header, the pair repeating to fill the preamble block; and
transmitting the preamble block after mapping to Orthogonal Frequency Division Multiplexing (OFDM) cells by repeating on frequency axis.
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Abstract
A method and apparatus for transmitting and receiving a preamble having sequence information for an OFDM system is provided. The preamble transmission method includes generating a preamble block including at least one frame having a header with a known sequence and a code block containing control information and transmitting the preamble block mapped to Orthogonal Frequency Division Multiplexing (OFDM) cells by repeating in frequency axis direction.
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Citations
8 Claims
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1. A preamble transmission method comprising:
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generating a preamble block including at least one pair of a code block having control information and a header, the pair repeating to fill the preamble block; and transmitting the preamble block after mapping to Orthogonal Frequency Division Multiplexing (OFDM) cells by repeating on frequency axis. - View Dependent Claims (2)
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3. A preamble reception method comprising:
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detecting a code block within a reception bandwidth; combining, if the code block repeats, the repeated code blocks; extracting control information from the code block; and decoding received data signal based on the control information. - View Dependent Claims (4)
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5. A preamble transmitter comprising:
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an encoder for generating at least one code block having control information; a sequence generator for adding a header to the code block; a repeater for repeating, when a pair of the code block and the header is shorter than a preamble block, the pair to fill the preamble block; and a symbol mapper for transmitting the preamble block after mapping to Orthogonal Frequency Division Multiplexing (OFDM) cells by repeating on frequency axis. - View Dependent Claims (6)
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7. A preamble receiver comprising:
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a control information extractor for extracting control information from a code block within a predetermined reception bandwidth after combining, if the code block repeats within the reception bandwidth, the repeated code blocks; and a data extractor for decoding a received data signal based on the control information. - View Dependent Claims (8)
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Specification