EP 1525730 A2 20050427 - METHOD FOR DIVIDING THE BIT RATE OF QPSK SIGNALS INTO TWO OR SEVERAL SUBCHANNELS
Title (en)
METHOD FOR DIVIDING THE BIT RATE OF QPSK SIGNALS INTO TWO OR SEVERAL SUBCHANNELS
Title (de)
VERFAHREN ZUR AUFTEILUNG DER BITRATE VON QPSK-SIGNALEN IN ZWEI ODER MEHRERE TEILKANÄLE
Title (fr)
VERFAHREN ZUR AUFTEILUNG DER BITRATE VON QPSK-SIGNALEN IN ZWEI ODER MEHRERE TEILKANALE
Publication
Application
Priority
- DE 10234823 A 20020731
- EP 0308335 W 20030729
Abstract (en)
[origin: WO2004014034A2] The invention relates to a method for dividing the bit rate of QPSK signals by splitting the spectrum of said QPSK signals into at least two channels having band-limited filters in the modulator and demodulator. The prefiltered QPSK signal is split into at least one real and at least one imaginary spectrum at the transmitter end, is transmitted in frequency multiplex, and the filters in the modulator of the transmitter and the demodulator of the receiver are dimensioned according to the transmission function.
IPC 1-7
IPC 8 full level
H04L 25/03 (2006.01); H04L 25/497 (2006.01); H04L 27/18 (2006.01); H04L 27/26 (2006.01)
CPC (source: EP US)
H04L 25/03834 (2013.01 - EP US); H04L 25/497 (2013.01 - EP US); H04L 27/02 (2013.01 - EP US); H04L 27/18 (2013.01 - EP US); H04L 27/2602 (2013.01 - EP US); H04L 27/26035 (2021.01 - EP US)
Citation (search report)
See references of WO 2004014034A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004014034 A2 20040212; WO 2004014034 A3 20040408; CN 1672378 A 20050921; DE 10234823 A1 20040219; DE 10234823 B4 20041118; EP 1525730 A2 20050427; JP 2006501701 A 20060112; JP 4069206 B2 20080402; US 2006056535 A1 20060316; US 7515645 B2 20090407
DOCDB simple family (application)
EP 0308335 W 20030729; CN 03817783 A 20030729; DE 10234823 A 20020731; EP 03766333 A 20030729; JP 2004525352 A 20030729; US 52286105 A 20050131