EP1556983B1

5G,4G,3G

Title

TRANSMIT DIVERSITY PROCESSING FOR A MULTI-ANTENNA COMMUNICATION SYSTEM

Application Number:

EP20030779264

Publication Date:

05-06-2013

Current Assignee:

Family ID:

Application Date:

27-10-2003

Declaring Company:

Publication Country:

US

Priority Date:

25-10-2002

Title

TRANSMIT DIVERSITY PROCESSING FOR A MULTI-ANTENNA COMMUNICATION SYSTEM

Application Number:

EP20030779264

Family ID:

Publication Country:

US

Publication Date:

05-06-2013

Application Date:

27-10-2003

Priority Date:

25-10-2002

Current Assignee:

Declaring Company:

Abstract  Abstract

For transmit diversity in a multi-antenna OFDM system a transmitter encodes interleaves and symbol maps traffic data to obtain data symbols. The transmitter processes each pair of data symbols to obtain two pairs of transmit symbols for transmission from a pair of antennas either (1) in two OFDM symbol periods for space-time transmit diversity or (2) on two subbands for space-frequency transmit diversity. NT ? (NT - 1)/2 different antenna pairs are used for data transmission with different antenna pairs being used for adjacent subbands where NT is the number of antennas. The system may support multiple OFDM symbol sizes. The same coding interleaving and modulation schemes are used for different OFDM symbol sizes to simplify the transmitter and receiver processing. The transmitter performs OFDM modulation on the transmit symbol stream for each antenna in accordance with the selected OFDM symbol size. The receiver performs the complementary processing.

For transmit diversity in a multi-antenna OFDM system a transmitter encodes interleaves and symbol maps traffic data to obtain data symbols. The transmitter processes each pair of data symbols to obtain two pairs of transmit symbols for transmission from a pair of antennas either (1) in two OFDM symbol periods for space-time transmit diversity or (2) on two subbands for space-frequency transmit diversity. NTs? (NT - 1)/2 different antenna pairs are used for data transmission with different antenna pairs being used for adjacent subbands where NT is the number of antennas. The system may support multiple OFDM symbol sizes. The same coding interleaving and modulation schemes are used for different OFDM symbol sizes to simplify the transmitter and receiver processing. The transmitter performs OFDM modulation on the transmit symbol stream for each antenna in accordance with the selected OFDM symbol size. The receiver performs the complementary processing.

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.