MIMO systems with rate feedback and space time transmit diversity
AssigneeMitsubishi Electric Research Laboratories, Inc.
InventorsJyhchau Horng, Jinyun Zhang
Life of this patent
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Abstract
A method and system transmits a stream of data symbols in a multiple-input/multiple-output wireless communications system that includes M pairs of transmitting antennas. The stream of data symbols are demultiplexed into M sub-streams and adaptively modulated and coded to a maximum data rate while achieving a predetermine performance on an associated channel used to transmit the sub-stream. Space-time transmit diversity encoding is applied to each coded sub-stream to generate two output streams, one output stream for each antenna.
Claims10
A method for transmitting a stream of data symbols in a multiple-input/multiple-output wireless communications system including M pairs of transmitting antennas, comprising:
- demultiplexing the stream of data symbols into M sub-streams;
- adaptively modulating and coding each sub-stream to a maximum data rate while achieving a predetermine performance on an associated channel used to transmit the sub-stream;
- and
- space-time transmit diversity encoding each coded sub-stream into two output streams, one output stream for each antenna.
A transmitter for transmitting a stream of data symbols in a multiple-input/multiple-output wireless communications system including M pairs of transmitting antennas, comprising:
- a demultiplexer generating M sub-streams from the stream of data;
- an adaptive modulation coder coding each sub-stream to a maximum data rate while achieving a predetermine performance on an associated channel used to transmit the sub-stream;
- a space-time transmit diversity encoder encoding each sub-stream into two output stream;
- and
- an antenna for each output stream.
A system for transmitting a stream of data symbols in a multiple-input/multiple-output wireless communications system including M pairs of transmitting antennas, comprising:
- a demultiplexer configured to demultiplex the stream of data symbols into M sub-streams;
- means for adaptively modulating and coding each sub-stream to a maximum data rate while achieving a predetermine performance on an associated channel used to transmit the sub-stream;
- means for space-time transmit diversity encoding each coded sub-stream into two output streams, one output stream for each antenna.
Dependencies are inferred from the claim text.