Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Reexamination Certificate
2011-08-02
2011-08-02
Trimmings, John (Department: 2117)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
C714S795000, C714S801000, C714S715000, C714S757000, C714S799000, C714S752000, C714S794000, C398S182000, C398S141000, C375S308000, C375S265000, C375S267000, C375S260000, C375S316000
Reexamination Certificate
active
07992070
ABSTRACT:
A transmitter includes a plurality of encoders configured to receive source bit streams from m information sources, each of the plurality encoders including identical (n,k) low-density parity check (LDPC) codes of code rate r=k
, where k is a number of information bits and n is codeword length. An interleaver is configured to collect m row-wise codewords from the plurality of encoders, and a mapper is configured to receive m bits at a time column-wise from the interleaver and to determine an M-ary signal constellation point. A modulator is configured to modulate a light source in accordance with the output of the mapper at a transmission rate Rs/r (Rs—the symbol rate, r—-the code rate). A receiver and transmission and receiving methods are also disclosed.
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Cvjetic Milorad
Djordjevic Ivan B.
Wang Ting
Xu Lei
Bitetto James
Kolodka Joseph
NEC Laboratories America, Inc.
Trimmings John
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