Back to results
US 2012/0084620 A1Published application
Transmission device and receiving device
AssigneeFujitsu Limited
InventorShunji MIYAZAKI
Life of this patent
Estimating the term…
Abstract
A transmission device according to the present invention splits information bits, calculates two parity bit sequences from the split information bits, combines the parity bit sequences with information bits (encoded information bit) such that the calculated two parity bit sequences are not added to the same information bits. Then, the transmission device changes the order of the combined information, distributes each of the reordered information to levels L0 and L1, and performs multi level modulation, thus making the reliability of each bit constant.
Claims5
A transmission device comprising:
- a first element encoder that encodes information bits and creates a first parity bit sequence;
- a second element encoder that encodes information bits in which a sequence of bit strings are changed and creates a second parity bit sequence;
- a first rate matching unit that creates information obtained by combining a part of the information bits with the first parity bit sequence and adjusts a bit size of the created information;
- a second rate matching unit that creates information obtained by combining a part of the information bits with the second parity bit sequence and adjusts a bit size of the created information;
- and
- a multi level modulating unit that creates a bit string by combining the information that is output from the first rate matching unit with the information that is output from the second rate matching unit and performs multi level modulation in accordance with the bit string.
3 more elements
A receiving device comprising:
- a first element decoder that repeatedly performs error correction decoding on first likelihood data in accordance with a decoding result of another element decoder, the first likelihood data associated with information bits, and a second likelihood data associated with a first parity bit sequence;
- and
- a second element decoder that repeatedly performs the error correction decoding on the first likelihood data in accordance with a decoding result of the first element decoder, the first likelihood data associated with information bits, and a third likelihood data associated with a second parity bit sequence, wherein
- the first element decoder performs error correction decoding in accordance with the decoding result of the second element decoder and
- the first element decoder and the second element decoder specify an order of decoding in accordance with a first encoding rate and a second encoding rate.
2 more elements
Dependencies are inferred from the claim text.