초록 ▼

A restricted coded modulator apparatus (100, FIG. 1) is used to assign binary digits to symbols such that an error in one or more binary digits in an M-ary modulation format are the most likely. A parallel concatenated convolutional code is then applied to one or more digits of the symbol before tra

A restricted coded modulator apparatus (100, FIG. 1) is used to assign binary digits to symbols such that an error in one or more binary digits in an M-ary modulation format are the most likely. A parallel concatenated convolutional code is then applied to one or more digits of the symbol before transmitting the symbols across a communications channel (190, FIG. 1). At the receiving end, the one or more binary digits of the symbols and the associated error correction information are decoded by way of a parallel concatenated convolutional decoder (200, FIG. 4). The corrected information is then used to correct errors in other binary digits of the received symbol.

대표청구항 ▼

[ What is claimed is:] [1.] A method for applying an error control code to a stream of binary digits, the method comprising the following steps:a) converting the stream of binary digits to a plurality of unencoded streams of binary digits using restricted coded modulation;b) encoding one of the plur

[ What is claimed is:] [1.] A method for applying an error control code to a stream of binary digits, the method comprising the following steps:a) converting the stream of binary digits to a plurality of unencoded streams of binary digits using restricted coded modulation;b) encoding one of the plurality of unencoded streams of binary digits by way of a parallel concatenated convolutional encoder resulting in a stream of parallel concatenated convolutionally encoded binary digits;c) combining the stream of parallel concatenated convolutionally encoded binary digits with the one of the plurality of unencoded streams of binary digits; andd) combining the one stream of parallel concatenated convolutionally encoded binary digits and the one of the plurality of unencoded streams of binary digits with the plurality of unencoded streams of binary digits resulting in a combined stream of binary digits.