JPH0443448B2 - - Google Patents

Info

Publication number
JPH0443448B2
JPH0443448B2 JP59233827A JP23382784A JPH0443448B2 JP H0443448 B2 JPH0443448 B2 JP H0443448B2 JP 59233827 A JP59233827 A JP 59233827A JP 23382784 A JP23382784 A JP 23382784A JP H0443448 B2 JPH0443448 B2 JP H0443448B2
Authority
JP
Japan
Prior art keywords
signal
column
value
signals
multilevel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP59233827A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61112431A (ja
Inventor
Yasutsune Yoshida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Priority to JP23382784A priority Critical patent/JPS61112431A/ja
Priority to US06/794,662 priority patent/US4750191A/en
Priority to AU49365/85A priority patent/AU588162B2/en
Priority to CA000494589A priority patent/CA1282494C/en
Priority to BR8505564A priority patent/BR8505564A/pt
Priority to DE3588002T priority patent/DE3588002T2/de
Priority to EP85114133A priority patent/EP0186757B1/en
Priority to EP93119447A priority patent/EP0588387B1/en
Priority to DE3588126T priority patent/DE3588126T2/de
Priority to CN85108891A priority patent/CN1007951B/zh
Publication of JPS61112431A publication Critical patent/JPS61112431A/ja
Publication of JPH0443448B2 publication Critical patent/JPH0443448B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Analogue/Digital Conversion (AREA)
  • Dc Digital Transmission (AREA)
JP23382784A 1984-11-06 1984-11-06 Ｄａ変換装置 Granted JPS61112431A (ja)

Priority Applications (10)

Application Number Priority Date Filing Date Title
JP23382784A JPS61112431A (ja) 1984-11-06 1984-11-06 Ｄａ変換装置
US06/794,662 US4750191A (en) 1984-11-06 1985-11-04 D/A converter capable of producing an analog signal having levels of a preselected number different from 2N and communication network comprising the D/A converter
AU49365/85A AU588162B2 (en) 1984-11-06 1985-11-05 D/A converter capable of producing an analog signal having levels of a preselected number different from 2N and communication network comprising the D/A converter
CA000494589A CA1282494C (en) 1984-11-06 1985-11-05 D/a converter capable of producing an analog signal having levels of a preselected number different from 2 and communication network comprising the d/a converter
BR8505564A BR8505564A (pt) 1984-11-06 1985-11-06 Conversor digital-analogico,modulador e demodulador
DE3588002T DE3588002T2 (de) 1984-11-06 1985-11-06 QAM Modulator und Demodulator.
EP85114133A EP0186757B1 (en) 1984-11-06 1985-11-06 QAM modulator and demodulator
EP93119447A EP0588387B1 (en) 1984-11-06 1985-11-06 D/A converter capable of producing an analog signal having levels of a preselected number different from 2**N and communication network comprising the D/A converter
DE3588126T DE3588126T2 (de) 1984-11-06 1985-11-06 D/A-Wandler, fähig zur Erzeugung eines analogen Signals mit vorausgewählter, von 2N verschiedener Pegelzahl, und ein mit einem solchen D/A-Wandler versehenes Kommunikationsnetz
CN85108891A CN1007951B (zh) 1984-11-06 1985-11-06 能产生预选电平数不等于2n的模拟信号的数模转换器及带有这种转换器的调制器和解调器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23382784A JPS61112431A (ja) 1984-11-06 1984-11-06 Ｄａ変換装置

Publications (2)

Publication Number Publication Date
JPS61112431A JPS61112431A (ja) 1986-05-30
JPH0443448B2 true JPH0443448B2 (enrdf_load_stackoverflow) 1992-07-16

Family

ID=16961181

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23382784A Granted JPS61112431A (ja) 1984-11-06 1984-11-06 Ｄａ変換装置

Country Status (1)

Country Link
JP (1) JPS61112431A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07112208B2 (ja) * 1987-02-19 1995-11-29 富士通株式会社 多値振幅変復調方式通信システム

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57118430A (en) * 1981-01-14 1982-07-23 Matsushita Electric Ind Co Ltd Digital-to-analog converter
JPS58117723A (ja) * 1981-12-31 1983-07-13 Advantest Corp Ｄａ変換装置

Also Published As

Publication number Publication date
JPS61112431A (ja) 1986-05-30

Similar Documents

Publication Publication Date Title
CA1235754A (en) Digital demodulator arrangement for quadrature signals
EP0031193B1 (en) Double sideband quadrature carrier modulation system and method of transmitting information using the point constellation of such a system
JPS5951645A (ja) 誤り訂正多値符号化復号化方式およびその装置
JP3582650B2 (ja) 位相変調装置とその位相変調方法、及び位相変調プログラム
US5844943A (en) Method and converter for converting rectangular signals to phase signals
US4646327A (en) Waveform shaping apparatus
EP0112107B1 (en) Data transmitting-receiving system
JP2654321B2 (ja) トレリス符号化の方法および装置
EP0348968A3 (en) Multilevel quadrature amplitude modulator capable of reducing a maximum amplitude of a multilevel quadrature amplitude modulated signal regardless of transmission data information or redundant information
US6370201B1 (en) Simplified branch metric calculation in pragmatic trellis decoders
JPS62133842A (ja) 多値直交振幅変調方式
JPH0443448B2 (enrdf_load_stackoverflow)
US4750191A (en) D/A converter capable of producing an analog signal having levels of a preselected number different from 2N and communication network comprising the D/A converter
JPS60134545A (ja) データ通信用信号構造
US4461011A (en) Method and apparatus for converting binary information into a high density single-sideband signal
JPH0122787B2 (enrdf_load_stackoverflow)
US6239666B1 (en) Uniform amplitude modulator
JP2548932B2 (ja) 多値ｑａｍ通信システム
JPH0648830B2 (ja) 変調装置
JPH0234551B2 (enrdf_load_stackoverflow)
JP3060531B2 (ja) 多値直交振幅変調方法およびその装置
GB2103456A (en) Digital data transmission systems
JPS61112459A (ja) 変復調装置
JP3313400B2 (ja) 符号化多値変調装置
JPH05304542A (ja) 復調方法及び復調器