TH53618A - Modulation technique for transmitting high data rates through band-restricted channels. - Google Patents

Abstract

DC60 (22/08/44) A digital modulator incorporates a digital source. More than one signal with a common data bit period. More than one encoder, each of which It encodes one digital data signal which is consistent with more than one. Signal using a variable pulse width code with various edges formed at different non-overlapping intervals. Set aside each range within that bit period. Greater number of pulse signal generators One, each generating different pulses Each pulse representing an edge Of the information signal An encoded digital that is consistent with more than one number of signals. Generator The PAH signal generates a PAH signal that contains pulses of the PAH that correspond to the different pulses.Each pulse demodulator of the digital data is incorporated by the received signal source. The Modulation, including periods Of consecutive bits in which each bit period has different non-overlapping periods associated with the corresponding interval in different periods of the bit contiguous by At each interval, there is a pulse of the PAH, which is spaced in a manner in relation to the other pulses of the other relative pahs, representing a digital signal encoded in the amplitude of the Pulses at Correspondingly variable The detector modulates the modulated signal to generate various pulses corresponding to the pulses of the incoming carrying waves. More than one decoder which Each machine decodes a different pulse. That were introduced in the respective ranges from which there are More than one interval in the bit period to produce a consistent digital signal. The digital modulator incorporates the digital source. More than one signal with a common data bit period. More than one encoder, each of which It encodes one digital data signal which is consistent with more than one. Signal using a variable pulse width code with various edges. That occurred during different periods That does not overlap Each range is within that bit period. Greater number of pulse signal generators One, each generating different pulses Each pulse representing an edge Of the information signal An encoded digital that corresponds to more than one signal. Generator The PAH signal generates a PAH signal that contains pulses of the PAH that correspond to the different pulses.Each pulse demodulator of the digital data is incorporated by the received signal source. The Modulation, including periods Of consecutive bits, each of which has a non-overlapping period, associated with the corresponding interval in the periods. Of bits that are contiguous by At each interval there is a pulse of the PAH, which is spaced in a manner in relation to the other pulses of the PAH at other times. Corresponding, representing a digital signal that is encoded in a pulse width Correspondingly variable The detector modulates the modulated signal to generate various pulses corresponding to the pulses of the incoming carrying waves. More than one decoder which Each machine decodes a different pulse. That were accepted in various periods Related to each period from which there are More than one interval in the bit period to generate the corresponding digital signal.

Claims (1)

1. The digital modulation method consists of the following steps: the preparation of more than one digital signal with periods of Data bits joint; Encoding each digital signal from a greater number One signal using a variable pulse width code with various edges Occurring in each non-overlapping period within the period of such bits; Generating various pulses Each pulse shown by a tag: