CN1784848A

5G,4G,3G

Title

Systems and methods for using code space in spread-spectrum communications network

Application Number:

CN20048012079

Publication Date:

07-06-2006

Current Assignee:

Family ID:

Application Date:

05-03-2004

Declaring Company:

Publication Country:

US

Priority Date:

06-03-2003

Title

Systems and methods for using code space in spread-spectrum communications network

Application Number:

CN20048012079

Family ID:

Publication Country:

US

Publication Date:

07-06-2006

Application Date:

05-03-2004

Priority Date:

06-03-2003

Current Assignee:

Declaring Company:

Abstract  Abstract

System and method for improving the direct sequence spread spectrum communication system. In one embodiment a system comprises: at least one communication channel the channel using the corresponding part of two different orthogonal spreading codes and the available orthogonal code space. the data processed by the communication channel part is demultiplexed (471) into different streams and the corresponding different orthogonal code covering (472 473). Then the flow is combined with different orthogonal code covering (475) and is transmitted by the same communication channel. In one embodiment in order to use three quarters of the Walsh space is not used in conventional low speed channel it uses at least two different Walsh codes of different lengths (+ - and + + --).

Systems and methods for improving the performance of direct-sequence spread-spectrum communication systems. In one embodiment a system comprises at least one communication channel that utilizes two different orthogonal spreading codes and corresponding portions of the available orthogonal code space. Portions of the data processed by the communication channel are demultiplexed (471) into different streams and covered (472 473) with corresponding different orthogonal spreading codes. The streams covered by the different orthogonal codes are then combined (475) and transmitted via the same communication channel. One embodiment utilizes at least two different Walsh codes of different lengths (+ - and + + - -) in order to make use of the three quarters of the Walsh space not utilized by low-rate legacy channels.

Systems and methods for improving the performance of direct-sequence spread-spectrum communication systems. In one embodiment a system comprises at least one communication channel that utilizes two different orthogonal spreading codes and corresponding portions of the available orthogonal code space. Portions of the data processed by the communication channel are demultiplexed (471) into different streams and covered (472 473) with corresponding different orthogonal spreading codes. The streams covered by the different orthogonal codes are then combined (475) and transmitted via the same communication channel. One embodiment utilizes at least two different Walsh codes of different lengths (+ - and + + - -) in order to make use of the three quarters of the Walsh space not utilized by low-rate legacy channels.

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.