Multicarrier receiver

US6744821B1 · kind B1 · utility

Assignee

• ALCATEL · FR

Inventors

• Kathleen Peggie Florimond Van Acker · Rumst, BE
• Geert Leus · Hasselt, BE
• Marc Moonen · Herent, BE
• Thierry Pollet · Mechelen, BE
• Olivier Van De Wiel · Sunnyvale, US

Key dates

• Filing date: Jun 28, 1999
• Grant date: Jun 1, 2004
• Expiry date: Jun 28, 2019

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L2025/03522
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A multicarrier receiver (RX′) comprises the cascade connection of a sliding Fourier transformer (SLIDING FFT) which subsequently Fourier transforms parts of an incoming cyclically extended multicarrier symbol (MS), and a per-carrier frequency domain equaliser (PC-FEQ) including for each carrier a tapped delay line (TD1, TD2, . . . , TDN/2) for equalising the Fourier transformed parts of the incoming multicarrier symbol (MS). The per-carrier frequency domain equaliser (PC-FEQ) allows to optimise the system capacity individually per carrier, and in a preferred embodiment of the invention includes tapped delay lines (TD1, TD2, . . . , TDN/2) with adaptive complex taps, with an adaptive length and with an individual delay that may differ for different carriers.