TH94911B - "Four-level photon communication with approximation of decision-making, combined with a combination of binary pulse signal modulation and data format modifications for convolution codes" - Google Patents

Abstract

An optical communication system in which data distortion occurs due to the effects of photons in the pulse. Variable amounts of light and external noise Implementation of the four photon communication process The level of use of binary pulse position modulation and convolutional encoding is One approach that can help reduce the rate of data errors. But because of the usage pattern of the four-photon level communication used with binary pulse position modulation is incomplete. with the needs of information Therefore, it is necessary to modify the format of the data using bit cutting. Some parts were removed and additional check bits were added to provide an appropriate format for use, including the modification of the data format in the receiver to be suitable for decoding using the Vitherby method. As a result of Testing when modifying the format of the data found that it can be used with convolutional code. And the results of using the code can reduce the data error rate.

Claims (1)

1. How to modify the data format after convolution encoding and before decoding. By the way, weiterb It consists of a mapping process, where the data obtained from the convolution encoding is modified when adding additional bits, puncture bit reduction processes are applied to reduce the number of bits and achieve a pattern. Suitable for communication Four-stage photon model is applied in conjunction with binary-pulse signal mixing.