US2005028065A1

3G

Title

RANDOM-ACCESS MULTI-DIRECTIONAL CDMA2000 TURBO CODE INTERLEAVER

Application Number:

US20040929126

Publication Date:

03-02-2005

Current Assignee:

QUALCOMM INC

Family ID:

25157032

Application Date:

27-08-2004

Publication Country:

US

View on Espacenet

Priority Date:

23-02-2001

Declaring Company:

QUALCOMM INC

Abstract  Abstract

An interleaver that implements the LCS turbo interleaver algorithm utilized by the CDMA2000 standard is described. The interleaver includes a first computation unit for receiving an input address and computing a first sequential interleaved address during a first clock cycle in response thereto. A second computation unit is included for receiving an input address and computing a second sequential interleaved address during the first clock cycle in response thereto. The interleaver further includes a comparator for determining whether the first or the second sequential interleaved address is invalid and generating a signal in response thereto. The output of the comparator provides a control signal to a switch which selects the first or the second sequential interleaved address as an output interleaved address for the first clock cycle. The interleaver is further designed to move in a forward direction or a reverse direction.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent

Implicitly disclosed patent

Basis patent

Family member

© 2021 All Rights Reserved FrandAvenue