US 2014/0192856 A1 · ADAPTIVE EQUALIZER

Abstract

An adaptive equalizer (100) has a signal converter (200) for performing a fast Fourier transform and/or an inverse fast Fourier transform. The signal converter (200) has: a first wide-bit memory (201) capable of reading/writing a plurality of sample signals; a first register group (202) comprising a plurality of registers capable of accessing the first wide-bit memory (201); a butterfly computation unit group (204) comprising a plurality of butterfly computation units; and a first connection switching unit (203) for switching the state of connection between the plurality of registers and the plurality of butterfly computation units.

Claims12

Dependent claims

An adaptive equalizer that performs adaptive equalization on a time-domain signal in a frequency domain, comprising a signal conversion section that performs at least one of a fast Fourier transform and an inverse fast Fourier transform, wherein the signal conversion section includes:

a memory capable of reading and writing signals for 2M samples, where M is a natural number;
2M registers accessible to the memory;
M butterfly operation sections;
and
a switching control section that switches a connection state between the 2M registers and the M butterfly operation sections.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/239,923Filed 29 Jun 2012

Priority

JP 2011-22792217 Oct 2011

Published

10 Jul 2014

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04L 25/03159
Arrangements for removing intersymbol interference: operating in the frequency domain
G06F 17/142
Discrete Fourier transforms: fast Fourier transforms, e.g. using a Cooley-Tukey type algorithm
H04L 25/03057
Adaptive, i.e. capable of adjustment during data reception: with a recursive structure
H04L 27/01
Modulated-carrier systems: equalisers

Adaptive equalizer

Life of this patent

Adaptive equalizer

Life of this patent

Abstract

Claims12