Patent · US Expired

Adaptive transverse equalizer

US4745623A · kind A · utility

3Cited by

7References

7Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Georg Sebald · Birkenfeld, DE
Berthold Lankl · Egmating, DE
Josef Nossek · Iffeldorf, DE

Key dates

Filing date	Sep 25, 1986
Grant date	May 17, 1988
Priority date	—
Expiry date	Sep 25, 2006

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2025/03624
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

An adaptive transverse equalizer formed of delay elements, control elements and summers, and which is constructed in accordance with a serial-in/parallel-out or parallel-in/serial-out concept. Such an equalizer should be improved such that, given a simple structure, it exhibits a high equalizing performance and is particularly suitable for multi-stage digital radio link systems. For this purpose, an equalizer is provided as a linear transverse equalizer and having (n-1) positive and m negative coefficients set in accordance with a zero-forcing algorithm. A linear transverse filter is provided which supplies at least one additional, positive coefficient following upon an access region of the linear transverse filter and whose loop transit time corresponds to n-times or (n+i) times a symbol period.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.