JPH0435337A

JPH0435337A - Method for sending and receiving pulse train formed into consecutive phase signal by four-mode phase modulation

Info

Publication number: JPH0435337A
Application number: JP13751390A
Authority: JP
Inventors: Akira Takano; 晃高野
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-05-28
Filing date: 1990-05-28
Publication date: 1992-02-06

Abstract

PURPOSE:To send and receive a consecutive signal in which the length of a modulation wave of each bit is variable by sending a 4-code form signal corresponding to each bit from a sender side, identifying the phase at a receiver side so as to demodulate the order of bits and the code. CONSTITUTION:Four code form signals are indicated in captions 1, 2, 3, 4 and a pulse bit string 5 of is sent and received sequentially from the left. In the case of sending the bit string 5, the leftmost bit is set as a 1st and an odd number order bit. Then a four-code form signal relating to the bit order and the bit level is sequentially sent, resulting in sending a consecutive signal 6. In the case of receiving the four code form signal, the phase of the consecutive signal 6 is sequentially decoded to demodulate the bit. Thus, lots of consecutive signals of variable length modulation waves are sent/received at a high speed.

Description

【発明の詳細な説明】（イ）発明の目的デジタル通信に於いて、パルス列を連続位相信号にして
送受信する。DETAILED DESCRIPTION OF THE INVENTION (A) Purpose of the Invention In digital communication, a pulse train is converted into a continuous phase signal and transmitted and received.

（ロ）発明の構成第１図のブロック図に於いて、まず、パルス列のパルス
に対して、奇数番目と偶数番目のパルス位置のピント符
号の０１及び、■を組み合わせたバ〆レスの様式に対応
する４様式位相で変調した４様式位相信号を各々■、■
、■、及び、■で示す。(B) Structure of the Invention In the block diagram shown in FIG. 1, first, for the pulses of the pulse train, the focus code of 01 and ■ at the odd and even pulse positions is combined. The four-modal phase signals modulated with the corresponding four-modal phases are ■ and ■, respectively.
, ■, and ■.

即ち、■と■は奇数番目のパルス位置のビット符号のＯ
と１を、そして、■と■は偶数番目のパルス位置のビッ
ト符号の０と１を４様式位相で変調した４様式位相信号
を示す。次に、パルス列■０１１０００１０を左から順
次、送信する場合を示す。まず、その左端のパルス位置
から各々のパルスに対して、該当する４様式位相信号を
対応させれば、■、■、■、■、■、■、■、及び、■
の順序になり、同一の４様式位相信号は隣接しない。そ
して、その順序で、連続位相信号■を左から送信する。That is, ■ and ■ are O of the bit sign of the odd-numbered pulse position.
and 1, and ■ and ■ indicate a four-mode phase signal in which the bit codes 0 and 1 at even-numbered pulse positions are modulated by four-mode phases. Next, a case will be shown in which the pulse train ■01100010 is transmitted sequentially from the left. First, if the corresponding four-mode phase signal is associated with each pulse from the leftmost pulse position, ■, ■, ■, ■, ■, ■, ■, and ■
, and identical four-modal phase signals are not adjacent. Then, in that order, the continuous phase signal ■ is transmitted from the left.

その受信は、連続位相信号■を受信した順序で、４様式
位相を識別して復調し、それに対応するパルスの様式か
ら送信したパルス列０１１０００１０が復元できる。In the reception, the four-mode phase is identified and demodulated in the order in which the continuous phase signal (■) is received, and the transmitted pulse train 01100010 can be recovered from the corresponding pulse mode.

（ハ）発明の効果デジタル通信に於いて、パルス列を連続位相信号にして
送受信できる。(c) Effects of the invention In digital communication, pulse trains can be converted into continuous phase signals and transmitted and received.

[Brief explanation of the drawing]

別紙図面の第１図はブロック図で、本発明の構成を例示
したものである。FIG. 1 of the attached drawings is a block diagram illustrating the configuration of the present invention.

Claims

[Claims]

First, for each pulse in the pulse train, four sets of formats are determined by combining whether the pulse position is an odd number or an even number and whether the bit code is 0 or 1. This is called its pulse pattern. Next, four different phases corresponding to the pulse styles of each of those four are set, which are called four-mode phases. Then, each of the four signals modulated with the four modal phases is
It is called a modal phase signal. Then, each of them is made to correspond to each of the pulse modes. To transmit the pulse train, first, the four-mode phase signals corresponding to the respective pulse formats are converted into continuous phase signals in the order of the pulse arrangement of the pulse train. Then, identical four-modality phase signals are not adjacent. and,
Transmit that continuous phase signal. The reception demodulates the transmitted continuous phase signals by identifying a four-modal phase that varies from pulse modality to pulse modality in the received order. Then, the transmitted pulse train is restored from the corresponding pulse pattern. That is, the patent claims include: 1) a method of modulating the pulses of a pulse train with four modal phases to produce a four modal phase signal;
2) a method of transmitting the four-mode phase signal as a continuous phase signal; and 3) a method of receiving it.