JP2006311611A

5G,4G,3G

Title

INTERFERENCE CANCELLATION IN SPREAD SPECTRUM COMMUNICATIONS SYSTEM

Application Number:

JP20060207835

Publication Date:

09-11-2006

Current Assignee:

Family ID:

Application Date:

31-07-2006

Declaring Company:

Publication Country:

US

Priority Date:

10-09-1999

Title

INTERFERENCE CANCELLATION IN SPREAD SPECTRUM COMMUNICATIONS SYSTEM

Application Number:

JP20060207835

Family ID:

Publication Country:

US

Publication Date:

09-11-2006

Application Date:

31-07-2006

Priority Date:

10-09-1999

Current Assignee:

Declaring Company:

Abstract  Abstract

PROBLEM TO BE SOLVED: To improve quality of a received signal without increasing transmission power level in a code division multiple access (CDMA) communications system.

SOLUTION: A transmitter transmits a spread spectrum pilot signal and data signal. Each of the signals has a chip code related with itself. A receiver receives the transmitted pilot signal and the data signal. The received pilot signal is filtered by using the chip codes series for the pilot signal and weights for elements of the received pilot signal are determined by using an adaptive algorithm. The received data signal is weighted by the determined weights and filtered with the data signal chip code to reproduce the data from the received signal.

COPYRIGHT: (C)2007JPO&INPIT

COPYRIGHT: (C)2006JPO&NCIPI

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.