US2005265430A1

5G,4G,3G,2G

Title

System for using rapid acquisition spreading codes for spread-spectrum communications

Application Number:

US20050181450

Publication Date:

01-12-2005

Current Assignee:

Family ID:

Application Date:

14-07-2005

Publication Country:

US

Priority Date:

30-06-1995

Declaring Company:

Abstract  Abstract

A system for rapidly acquiring a spreading code used in a code division multiple access (CDMA) system comprises a generator for generating a first long code and a second long code with each long code having a length of N chips. The first long code is different from the second long code. A transmitter transmits the first long code and the second long code at a first phase angle and at a second phase angle respectively on a carrier signal over a communications channel using radio waves. The first long code and the second long code may be transmitted at an in-phase (I) angle and at a quadrature-phase (Q) angle respectively on the carrier signal. From the communications channel an I acquisition circuit and a Q acquisition circuit may acquire in parallel the first long code and the second long code from the I angle and the Q angle respectively of the carrier signal by searching in parallel N/2 chips of the first long code and the second long code.

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.