Wireless communications systems and methods for direct memory access and buffering of digital signals for multiple user detection

US7110437B2 · kind B2 · utility

Assignee

• MERCURY COMPUTER SYSTEMS, INC. · US

Inventors

• John H. Oates · Thomasville, US
• Steven R. Imperiali · Endwell, US
• Alden Fuchs · Leesburg, US
• Kathleen J. Jacques · Somerville, US
• Jonathan E. Greene · Great Barrington, US
• William J. Jenkins · Leominster, US
• Frank P. Lauginiger · Francestown, US
• David E. Majchrzak · Merrimack, US
• Paul E. Cantrell · Chelmsford, US
• Mirza Cifric · Brookline, US
• Ian Dunn · Providence, US
• Michael J. Vinskus · Litchfield, US

Key dates

• Filing date: Mar 14, 2002
• Grant date: Sep 19, 2006
• Expiry date: Mar 15, 2024

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B2201/70711
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

The invention provides methods and apparatus for multiple user detection (MUD) processing that have application, for example, in improving the capacity CDMA and other wireless base stations. One aspect of the invention provides a digital signal processor (“DSP”) that processes user waveforms. The DSP has an associated memory and an associated direct memory access (“DMA”) controller that controls access to that memory. A programmable logic device (“PLD”) is coupled to the DMA controller and configures it to move data relating to user waveform characteristics from the memory to a buffer external to the DSP.