Transmission system for digital signals, and transmitter and receiver therefor

US5881107A · kind A · utility

Assignee

• Deutsche ITT Industries, GmbH · DE

Inventors

• Miodrag Termerinac · Hartheim, DE
• Franz-Otto Witte · Landsberg am Lech, DE

Key dates

• Filing date: Mar 11, 1997
• Grant date: Mar 9, 1999
• Expiry date: Mar 11, 2017

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L27/3827
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

Transmission system with a transmitter (T), a receiver (R), and a filter combination (FI1, FI2; FQ1, FQ2) for transmitting a digital signal (sr), encoded in symbols (Si), from the transmitter (T) to the receiver (R) at any frequency position by quadrature modulation, wherein one of the two quadrature signal components (ki, kq) in the transmitter is delayed before the quadrature modulation by a time interval td, particularly by td=Tsymb/4. (FIG. 7)