Generic finger architecture for spread spectrum applications

US6459883B2 · kind B2 · utility

Assignee

• Morphics Technology, Inc. · US

Inventors

• Ravi Subramanian · Mountain View, US
• Keith Rieken · Cupertino, US
• Uma Jha · Indian Harbour Beach, US
• David M. Holmes · Cupertino, US
• Joel D. Medlock · Los Gatos, US
• Murali R. Krishnan · Redmond, US

Key dates

• Filing date: Jul 31, 2001
• Grant date: Oct 1, 2002
• Expiry date: Jul 31, 2021

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L2027/0026
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A rake receiver in accordance with an exemplary embodiment of this invention is configurable by an external agent (e.g., microcontroller, DSP, or state machine) to suit the particular requirements of different spread spectrum systems. In an exemplary embodiment, the receiver includes multiple fingers. Each finger includes a plurality of generic despreaders/descramblers, a plurality of generic dechannelizers coupled to the despreaders/descramblers, and at least one timing estimation controller coupled to the despreaders/descramblers. The finger also includes at least one phase estimation controller, at least one frequency estimation controller, and at least one energy estimation controller all coupled to the generic dechannelizers.