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US 2007/0127595 A1Published application
Reduced complexity coding system using iterative decoding
AssigneeCellular Elements LLC
InventorsMarvin Simon, Dariush Divsalar
Life of this patent
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Abstract
A concatenated coding scheme, using an outer coder, interleaver, and the inner coder inherent in an FQPSK signal to form a coded FQPSK signal. The inner coder is modified to enable interative decoding of the outer code.
Claims21
A method of coding, comprising:
- passing a sequence of bits to be coded through an outer encoder to produce outer encoded bits;
- and
- forming a modified FQPSK modulation on said outer encoded bits of the type which applies an inner code to said outer coded bits.
A method, comprising:
- outer coding a plurality of bits to form a repetition code;
- interleaving said bits according to a specified interleaving scheme;
- and
- remapped FQPSK modulating the repetition coded bits to form a concatenated code that will be transmitted over a channel.
1 more element
A receiver, comprising:
- a modified FQPSK demodulator, an iterative decoder, which iteratively demodulates and decodes an input signal.
A method, comprising:
- using a modified FQPSK coding system to code according to an iterative coding scheme.
A method, comprising decoding a modified FQPSK coded signal according to an iterative decoding scheme.
Dependencies are inferred from the claim text.