AU2009213062A1

5G

Title

Spatial spreading in a multi-antenna communication system

Application Number:

AU20090213062

Publication Date:

08-10-2009

Current Assignee:

QUALCOMM INC

Family ID:

34703586

Application Date:

10-09-2009

Declaring Company:

QUALCOMM INC

Publication Country:

US

Priority Date:

17-12-2003

View on Espacenet goto-link

Title

Spatial spreading in a multi-antenna communication system

Application Number:

AU20090213062

Family ID:

34703586

Publication Country:

US

Publication Date:

08-10-2009

Application Date:

10-09-2009

Priority Date:

17-12-2003

Current Assignee:

QUALCOMM INC

Declaring Company:

QUALCOMM INC

View on Espacenet goto-link

Abstract  Abstract

Spatial spreading is performed in a multi-antenna system to randomize an "effective" channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where No >_ 1 and NM > 1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L > 1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels. Process (e.g., encode, interleave, and modulate) data to obtain N O data symbol blocks ' r114 Partition the N o data symbol blocks into N M data symbol subblocks to be transmitted in N M transmission spans £ 116 m=l ; 1.118 Select a steering matrix V(m) for transmission span m t.12o 1 Perform spatial processing on data symbol subblock m with steering matrix V(m) to obtain transmit symbols 1-122 Process and send the transmit symbols via N T transmit antennas in transmission span m

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.

© 2025 All Rights Reserved FrandAvenue