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US 11,184,031 B2Granted
Transmission apparatus, reception apparatus, transmission method, and reception method
AssigneePanasonic Intellectual Property Corporation of America
InventorsHiroyuki Motozuka, Takenori Sakamoto
Life of this patent
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Abstract
The interleaver 104 interleaves first to Nth code words. The OFDM modulation circuit 105 converts the interleaved first to Nth code words into OFDM signals. The transmission RF circuit 106 transmits the OFDM signals. The number of data symbols included in the first code word is less than the number of data symbols included in the second code word. The interleaver 104 writes the first code word to the Nth code word in ascending order and starts reading from the second code word.
Claims12
A transmission apparatus comprising:
- an interleaver circuit that interleaves first to Nth code words (N is an integer of 2 or greater), a number of data symbols included in the first code word being less than a number of data symbols included in the second code word, wherein the interleaving is performed by:
- writing a first set of data symbols included in the first code word to an Nth set of data symbols included in the Nth code word in a row direction in an ascending order;
- and
- reading the first set of written data symbols to the Nth set of written data symbols in a column direction starting from a first data symbol of a second set of data symbols included in the second code word;
- an OFDM modulation circuit that converts the interleaved first to Nth code words into OFDM signals;
- and
- a transmission circuit that transmits the OFDM signals.
4 more elements
A reception apparatus comprising:
- a reception circuit that receives OFDM signals including first to Nth code words (N is an integer of 2 or greater) interleaved by a transmission apparatus;
- a DFT circuit that extracts the interleaved first to Nth code words from the OFDM signals;
- and
- a deinterleaver circuit that deinterleaves the interleaved first to Nth code words,
- wherein a number of data symbols included in the first code word is less than a number of data symbols included in the second code word, and
- wherein the interleaved first to Nth code words are generated by an interleaver circuit of the transmission apparatus by:
- writing a first set of data symbols included in the first code word to an Nth set of data symbols included in the Nth code word in a row direction in an ascending order;
- and
- reading the first set of written data symbols to the Nth set of written data symbols in a column direction starting from a first data symbol of a second set of data symbols included in the second code word.
6 more elements
A transmission method comprising:
- interleaving first to Nth code words (N is an integer of 2 or greater), a number of data symbols included in the first code word being less than a number of data symbols included in the second code word, wherein the interleaving is performed by:
- writing a first set of data symbols included in the first code word to an Nth set of data symbols included in the Nth code word in a row direction in an ascending order;
- and
- reading the first set of written data symbols to the Nth set of written data symbols in a column direction starting from a first data symbol of a second set of data symbols included in the second code word;
- converting the interleaved first to Nth code words into OFDM signals;
- and
- transmitting the OFDM signals.
4 more elements
A reception method comprising:
- receiving OFDM signals including first to Nth code words (N is an integer of 2 or greater) interleaved by a transmission apparatus;
- extracting the interleaved first to Nth code words from the OFDM signals;
- and
- deinterleaving the interleaved first to Nth code words,
- wherein a number of data symbols included in the first code word is less than a number of data symbols included in the second code word, and
- wherein the interleaved first to Nth code words are generated by an interleaver circuit of the transmission apparatus by:
- writing a first set of data symbols included in the first code word to an Nth set of data symbols included in the Nth code word in a row direction in an ascending order;
- and
- reading the first set of written data symbols to the Nth set of written data symbols in a column direction starting from a first data symbol of a second set of data symbols included in the second code word.
6 more elements
Dependencies are inferred from the claim text.