JP2011250440A

3G

Title

Method and Apparatus for Transmitting and Receiving High Speed Data Using Code Division Multiple Access Channels

Application Number:

JP20110148223

Publication Date:

08-12-2011

Current Assignee:

Family ID:

Application Date:

04-07-2011

Declaring Company:

Publication Country:

US

Priority Date:

10-07-1998

Title

Method and Apparatus for Transmitting and Receiving High Speed Data Using Code Division Multiple Access Channels

Application Number:

JP20110148223

Family ID:

Publication Country:

US

Publication Date:

08-12-2011

Application Date:

04-07-2011

Priority Date:

10-07-1998

Current Assignee:

Declaring Company:

Abstract  Abstract

PROBLEM TO BE SOLVED: To provide a novel and improved communication system in which a user transmits data using code division multiple access communication channels.

SOLUTION: In a transmitter data is encoded spread and provided to a bank of upconverters. Each upconverter upconverts the spread data to different center frequencies. A switch selects one of the upconverted signals in accordance with a deterministic pseudorandom sequence. The spread data is provided to the upconverter which is driven by a variable frequency synthesizer. In a receiver the received data is passed to a bank of downconverters driven by local oscillators each of which is tuned to a different frequency. The downconverted data is provided to the switch which selects one of the downconverted data streams in accordance with a delayed version of the deterministic sequence used to select the upconversion frequency.

COPYRIGHT: (C)2012JPO&INPIT

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:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.