System and method for communicating data using constant amplitude equalized waveform
AssigneeHarris Corporation
InventorsJohn Nieto, William Furman, Michael Wadsworth
Life of this patent
Estimating the term…
Abstract
A system communicates data and includes an encoder for encoding communications data with a forward error correction code. A data randomizer randomizes the communications data with a random bit sequence and a combining circuit combines the communications data with known symbols into frames. A modulator maps the communications data into minimum shift keying or Gaussian minimum shift keying (MSK or GMSK) symbols based on a specific mapping algorithm to form a communications signal having an MSK or GMSK waveform over which the communications data can be transmitted.
Claims25
A system for communicating data, which comprises:
- an encoder for encoding communications data using a forward error correction code;
- a data randomizer that randomizes the communications data with a random bit sequence;
- a combining circuit for combining the communications data with known symbols into frames;
- and
- a modulator for mapping the communications data from the combining circuit into minimum shift keying or Gaussian minimum shift keying (MSK or GMSK) symbols based on a specific mapping algorithm to form a communications signal having a MSK or GMSK waveform over which the communications data can be transmitted.
A system for communicating data, which comprises:
- a transmitter for transmitting a communications signal that carries communications data, and including an encoder for encoding the communications data with a forward error correction code, a data randomizer that randomizes the communications data with a random bit sequence, a combining circuit for combining the communications data with known symbols into frames, and a modulator for mapping the communications data from the combining circuit into minimum shift keying or Gaussian minimum shift keying (MSK or GMSK) symbols based on a specific mapping algorithm to form a communications signal having a MSK or GMSK waveform over which the communications data can be transmitted;
- and
- a receiver for receiving the communications signal from the transmitter, and including a filter that is matched to a main pulse of the MSK or GMSK waveform and a block or symbol equalizer for equalizing the communications signal.
A method for communicating data, which comprises:
- encoding communications data with a forward error correction code;
- randomizing the communications data with a random bit sequence;
- combining the communications data with known symbols into frames;
- and
- mapping the communications data into minimum shift keying or Gaussian minimum shift keying (MSK or GMSK) symbols after combining based on a specific mapping algorithm to form a communications signal having a MSK or GMSK waveform over which the communications data can be transmitted.
Dependencies are inferred from the claim text.