US2008253471A1

4G

Title

SYSTEMS AND METHODS FOR ADAPTIVE BIT LOADING IN A MULTIPLE ANTENNA ORTHOGONAL FREQUENCY DIVISION MULTIPLEXED COMMUNICATION SYSTEM

Application Number:

US20080118838

Publication Date:

16-10-2008

Current Assignee:

Family ID:

Application Date:

12-05-2008

Declaring Company:

Publication Country:

US

Priority Date:

08-08-2003

Title

SYSTEMS AND METHODS FOR ADAPTIVE BIT LOADING IN A MULTIPLE ANTENNA ORTHOGONAL FREQUENCY DIVISION MULTIPLEXED COMMUNICATION SYSTEM

Application Number:

US20080118838

Family ID:

Publication Country:

US

Publication Date:

16-10-2008

Application Date:

12-05-2008

Priority Date:

08-08-2003

Current Assignee:

Declaring Company:

Abstract  Abstract

In an orthogonal frequency division multiplexed (OFDM) system a transmitter and/or receiver communicate separate data streams on non-orthogonal spatial channels. Each spatial channel may use the same set of OFDM subcarriers and may take advantage of the multipath characteristics of the spatial channel allowing the communication of additional data without an increase in frequency bandwidth. Space-frequency subcarrier modulation assignments may be dynamically assigned on a per subcarrier basis as well as a per spatial channel basis to help maximize the data-carrying capacity of the channel. In some embodiments each of the spatial channels may be associated with one of a plurality of spatially diverse antennas. In other embodiments beamforming may be performed to allow the transmission and/or reception of signals within the spatial 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.