JPH01122242A - Radio digital transmission/reception system - Google Patents

Radio digital transmission/reception system

Info

Publication number
JPH01122242A
JPH01122242A JP62280709A JP28070987A JPH01122242A JP H01122242 A JPH01122242 A JP H01122242A JP 62280709 A JP62280709 A JP 62280709A JP 28070987 A JP28070987 A JP 28070987A JP H01122242 A JPH01122242 A JP H01122242A
Authority
JP
Japan
Prior art keywords
data string
transmission
reception system
input
quadrature
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.)
Pending
Application number
JP62280709A
Inventor
Kunihiko Takahashi
Original Assignee
Nec Corp
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 Nec Corp filed Critical Nec Corp
Priority to JP62280709A priority Critical patent/JPH01122242A/en
Publication of JPH01122242A publication Critical patent/JPH01122242A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To simplify the whole of a transmission/reception system by devising the processing of an input data string to use a MODEM of M-level QAM as it is at the time of switching between M-level QAM and four-phase PSK modulation.
CONSTITUTION: When the quality of a line is deteriorated by the degradation of the radio propagation state, controllers 7 and 14 in transmission and reception sides are operated. A switching device 3 of 16-level QAM(quadrature amplitude modulation)-four phase PSK in a transmission side T ignores the input of two strings corresponding to a second data string d2 and performs coding only with quadrature discrimination bits B1∼B4 as the input of two strings corresponding to a first data string d1. Since the data of a third data string d3 consists of only information of quadrature discrimination bits B1∼B4 in the reception side R, error in output data of the third data string d3 is reduced even if the line state is bad. Thus, the whole of the transmission/reception system is simplified.
COPYRIGHT: (C)1989,JPO&Japio
JP62280709A 1987-11-05 1987-11-05 Radio digital transmission/reception system Pending JPH01122242A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62280709A JPH01122242A (en) 1987-11-05 1987-11-05 Radio digital transmission/reception system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62280709A JPH01122242A (en) 1987-11-05 1987-11-05 Radio digital transmission/reception system

Publications (1)

Publication Number Publication Date
JPH01122242A true JPH01122242A (en) 1989-05-15

Family

ID=17628856

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62280709A Pending JPH01122242A (en) 1987-11-05 1987-11-05 Radio digital transmission/reception system

Country Status (1)

Country Link
JP (1) JPH01122242A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7609747B2 (en) 1989-08-03 2009-10-27 Broadcom Corporation Radio frequency communication network having adaptive communication parameters
US7672674B2 (en) 1988-08-04 2010-03-02 Broadcom Corporation Remote radio data communication system with data rate switching
US8005042B2 (en) 1997-11-03 2011-08-23 Qualcomm Incorporated Method and apparatus for high rate packet data transmission
JP2011182457A (en) * 2005-08-05 2011-09-15 Panasonic Corp Radio communication apparatus and radio communication method

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7672674B2 (en) 1988-08-04 2010-03-02 Broadcom Corporation Remote radio data communication system with data rate switching
US7609747B2 (en) 1989-08-03 2009-10-27 Broadcom Corporation Radio frequency communication network having adaptive communication parameters
US8189540B2 (en) 1997-11-03 2012-05-29 Qualcomm Incorporated Method and apparatus for high rate packet data transmission
US8005042B2 (en) 1997-11-03 2011-08-23 Qualcomm Incorporated Method and apparatus for high rate packet data transmission
US8817911B2 (en) 2005-08-05 2014-08-26 Panasonic Intellectual Property Corporation Of America Integrated circuit for controlling a process
JP2012050125A (en) * 2005-08-05 2012-03-08 Panasonic Corp Radio communication equipment and radio communication method
US8391411B2 (en) 2005-08-05 2013-03-05 Panasonic Corporation Wireless communication apparatus and wireless communication method
US8605824B2 (en) 2005-08-05 2013-12-10 Panasonic Corporation Radio communication apparatus and radio communication method
JP2011182457A (en) * 2005-08-05 2011-09-15 Panasonic Corp Radio communication apparatus and radio communication method
US8982990B2 (en) 2005-08-05 2015-03-17 Panasonic Intellectual Property Corporation Of America Radio communication apparatus and communication method
US9148267B2 (en) 2005-08-05 2015-09-29 Panasonic Intellectual Property Corporation Of America Radio communication apparatus and radio communication method
US9363053B2 (en) 2005-08-05 2016-06-07 Panasonic Intellectual Property Corporation Of America Integrated circuit
US9544008B2 (en) 2005-08-05 2017-01-10 Panasonic Corporation Integrated circuit
US9755689B2 (en) 2005-08-05 2017-09-05 Panasonic Corporation Integrated circuit
US9935673B2 (en) 2005-08-05 2018-04-03 Panasonic Corporation Radio communication apparatus, and radio communication method
US10148309B2 (en) 2005-08-05 2018-12-04 Panasonic Corporation Radio communication apparatus, and radio communication method
US10298286B2 (en) 2005-08-05 2019-05-21 Panasonic Corporation Integrated circuit

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