Method and device for transmitting binary data
AssigneeMitsubishi Electric Corporation
InventorVincent Corlay
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Abstract
A method for transmitting binary data using an M-ASK constellation divided into M/2 sets of two symbols is disclosed. Each set of index i is associated with a probability pi of transmitting the first symbol of the set. First, m−1 bits are obtained from a binary source where m=log2M. A binary source is then selected in a plurality of binary sources responsive to said m−1 bits, each binary source of index i being associated with a probability of outputting a bit zero equal to pi. A symbol of the M-ASK constellation is obtained that is associated with the binary word formed by the m−1 bits and the bit obtained from the selected source. The symbol is finally transmitted to a receiver over a communication channel.
Claims19
A method, in a transmitter, for transmitting binary data using an M-Amplitude-Shift Keying (M-ASK) constellation divided into M/2 sets of two symbols, each set of index i being associated with a probability pi of transmitting the first symbol of the set and a probability 1−pi of transmitting the second symbol of the set and wherein each symbol of the M-ASK constellation is associated with a binary word defined with a given labelling, said method comprising:
- a) obtaining m−1 bits from a binary source where m =log2M;
- b) selecting the binary source in a plurality of binary sources responsive to said m−1 bits, each binary source of index i being associated with a probability of outputting a bit zero equal to pi;
- c) obtaining one bit from the selected binary source;
- d) obtaining a symbol of the M-ASK constellation associated with the binary word formed by the m−1 bits obtained from the binary source and the bit obtained from the selected binary source;
- e) transmitting said obtained symbol to a receiver over a communication channel.
A transmitter configured to transmit binary data using an M-Amplitude-Shift Keying (M-ASK) constellation divided into M/2 sets of two symbols, each set of index i being associated with a probability pi of transmitting the first symbol of the set and a probability 1-pi of transmitting the second symbol of the set and wherein each symbol of the M-ASK constellation is associated with a binary word defined using a given labelling, said transmitter comprising at least one processor configured to:
- a) obtain m−1 bits from a binary source where m=log2M;
- b) select the binary source in a plurality of binary sources responsive to said m−1 bits, each binary source of index i being associated with a probability of outputting a bit zero equal to pi;
- c) obtain one bit from the selected binary source;
- d) obtain a symbol of the M-ASK constellation associated with the binary word formed by the m−1 bits obtained from the binary source and the bit obtained from the selected binary source;
- e) transmit said obtained symbol to a receiver over a communication channel.
Dependencies are inferred from the claim text.