Signal processing device
AssigneeTamagawa University and Tamagawa Academy
InventorsKen Tanizawa, Fumio Futami
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Abstract
The present invention addresses the problem of improving data transmission/reception equipment and transmission efficiency per hour. A light output unit 111 of a light transmitting/receiving device outputs n optical signals (where n is an integer value of 2 or more), each with a different wavelength, based on n respective pieces of data to be transmitted. From the n optical signals, a multiplexer 112 produces an optical signal multiplexed with respect to wavelength. From the multiplexed optical signal, an encryption unit 113 produces an encrypted signal by performing multi-level modulation on the basis of a Y-00 protocol. The problem is solved thereby.
Claims7
A signal processing device, comprising:
- an optical output unit that outputs each of n first type optical signals having different wavelengths based on each of n pieces of data to be transmitted, wherein n is an integer value of 2 or more;
- a multiplexing unit that multiplexes each of the n first type optical signals to generate one second type optical signal wavelength-multiplexed;
- and
- a multi-level modulation unit that performs multi-level modulation on the second type optical signal wavelength-multiplexed based on a predetermined algorithm to generate a third type optical signal, wherein performing the multi-level modulation on the second type optical signal includes performing at least a first stage modulation and a second stage modulation subsequently.
A signal processing device, comprising:
- a modulation unit that converts a first type optical signal subjected to first multi-level modulation based on a predetermined algorithm after being multiplexed with respect to n wavelengths into a second type optical signal wavelength-multiplexed, using second modulation based on an algorithm corresponding to a predetermined algorithm, wherein n is an integer value of 2 or more;
- and
- a separation unit that separates the second type optical signal into respective n third type optical signals.
Dependencies are inferred from the claim text.