JP2003509894A

5G,4G,3G

Title

Not Available

Application Number:

JP20010522694

Publication Date:

11-03-2003

Current Assignee:

INTERDIGITAL INC

Family ID:

23559015

Application Date:

17-08-2000

Declaring Company:

INTERDIGITAL INC

Publication Country:

US

Priority Date:

10-09-1999

View on Espacenet goto-link

Title

Not Available

Application Number:

JP20010522694

Family ID:

23559015

Publication Country:

US

Publication Date:

11-03-2003

Application Date:

17-08-2000

Priority Date:

10-09-1999

Current Assignee:

INTERDIGITAL INC

Declaring Company:

INTERDIGITAL INC

View on Espacenet goto-link

Abstract  Abstract

(PROBLEMS) To further improve the quality of a received signal without increasing the transmission power level in a code division multiple access (CDMA) communication system. The present invention provides data signal transmission / reception using a plurality of transmission antennas. Each antenna transmits a unique pilot signal having a unique pseudo-random chip code sequence. The receiver filters the transmitted pilot signal using a chip code sequence of the pilot signal. The filtered pilot signal is weighted and combined. The weight to each pilot signal is adaptively adjusted based in part on the signal quality of the combined signal. Data signals are transmitted such that different spread spectrum outputs of the data signals are transmitted from a plurality of transmitting antennas. Each of the spread spectrum outputs has a different chip code identifier. On the receiving side, each of the spread spectrum outputs is filtered with an associated chip code sequence. The filtered spread spectrum output is weighted according to the adjusted weight associated with the pilot signal of each antenna.

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.

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