Simplified block linear equalizer with block space time transmit diversity
AssigneeInterDigital Technology Corporation
InventorYounglok Kim
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Abstract
The present invention is a method and system for receiving data transmitted using block space time transmit diversity (BSTTD) in a code division multiple access (CDMA) communication system. The system comprises a transmitter, for transmitting a first data field using a first antenna and a second data field using a second antenna, and a receiver. The receiver includes an antenna for receiving the first and second transmitted data fields, and a BSTTD joint detector which determines symbols of the first and second transmitted data fields using a minimum mean square error block linear equalizer model and an approximated Cholesky decomposition of the model.
Claims12
A method for receiving data fields transmitted using block space time transmit diversity (BSTTD) in a code division multiple access (CDMA) communication system, the method comprising the steps of:
- transmitting a first data field using a first antenna, and a second data field using a second antenna;
- the second data field produced by rearranging blocks of the first data field;
- receiving the first data field and the second data field;
- generating a signal model ignoring interference between the data blocks;
- and,
- determining transmitted data symbols of the first data field and the second data field utilizing minimum mean square error block linear equalization, approximate Cholesky decomposition, and forward and backward substitution.
A receiver for recovering data fields transmitted from a block space time transmit diversity (BSTTD) transmitter which transmits a first data field using a first antenna and a second data field using a second antenna, the second data field produced by rearranging blocks of the first data field, the receiver comprising:
- an antenna for receiving a vector comprising both the first data field and the second data field;
- and,
- a BSTTD joint detector for determining transmitted symbols of the first data field and the second data field utilizing minimum mean square error block linear equalization, approximate Cholesky decomposition, and forward and backward substitution, while ignoring interference between data blocks.
A CDMA communication system for recovering data fields transmitted using block space time transmit diversity (BSTTD), the system comprising:
- a transmitter transmitting a first data field using a first antenna and a second data field using a second antenna, the second data field produced by rearranging blocks of the first data field;
- and
- a receiver for receiving data fields transmitted using BSTTD comprising:
- an antenna for receiving a vector comprising the first data field and the second data field;
- and,
- a BSTTD joint detector which utilizes minimum mean square error block linear equalization, approximate Cholesky decomposition, and forward and backward substitution to determine symbols of the first data field and the second data field, while ignoring interference between data blocks.
Dependencies are inferred from the claim text.