OFDM transmitting and receiving systems and methods
AssigneeSamsung Electronics Co., Ltd.
InventorsKyo-shin Choo, June-hee Lee
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Abstract
An orthogonal frequency division multiplexing (OFDM) transmission system is provided which includes a data processing unit which generates a transmission signal using a plurality of tones including a reserved tone, a storage unit which stores Peak Reduction Kernel information according to the type of data symbol, and a compensation unit which retrieves the Peak Reduction Kernel information according to the type of data symbol from the storage unit and causes the retrieved information to be carried by the reserved tone included in the transmission signal. Therefore, a Peak-to-Average Power Ratio (PAPR) can be efficiently compensated.
Claims14
An orthogonal frequency division multiplexing (OFDM) transmitting system comprising:
- a data processing unit which generates a transmission signal using a plurality of tones comprising reserved tones;
- a storage unit which stores Peak Reduction Kernel information entries corresponding to types of data symbols changing according to a preset periodic sequence;
- and
- a compensation unit which retrieves from the storage unit one of the stored Peak Reduction Kernel information entries matching a type of data symbol to be transmitted for the retrieved one of the stored Peak Reduction Kernel information entries to be carried by the reserved tones contained in the transmission signal.
An orthogonal frequency division multiplexing (OFDM) receiving system comprising:
- a storage unit which stores position information of reserved tones, into which Peak Reduction Kernel information is inserted, according to types of data symbols changing according to a preset periodic sequence;
- and
- a reception data processing unit which, if a transmission signal is received from an OFDM transmitting system, checks a position of a reserved tone matching a type of data symbol in the received transmission signal using the stored position information, and recovers the data symbol.
An orthogonal frequency division multiplexing (OFDM) transmitting method comprising:
- generating a transmission signal using a plurality of tones comprising reserved tones;
- retrieving information on a Peak Reduction Kernel matching a type of data symbol to be transmitted, from a storage unit which stores Peak Reduction Kernel information corresponding to types of data symbols changing according to a preset periodic sequence;
- and
- carrying by the reserved tones contained in the transmission signal, the retrieved information and transmitting the reserved tones with the retrieved information.
An orthogonal frequency division multiplexing (OFDM) receiving method comprising:
- receiving a transmission signal from an OFDM transmitting system;
- detecting a position of a reserved tone matching a type of data symbol represented by the received transmission signal using a storage unit which stores position information of reserved tones, into which Peak Reduction Kernel information is inserted, according to types of data symbols changing according to a preset periodic sequence;
- and
- recovering a data symbol carried by the reserved tone according to the detected position of the reserved tone.
Dependencies are inferred from the claim text.