METHOD AND APPARATUS FOR IMPLEMENTING SPACE TIME PROCESSING WITH UNEQUAL MODULATION AND CODING SCHEMES
First Claim
1. In a wireless communication system including a transmitter and a receiver, a method for implementing spatial data processing with unequal modulation and coding schemes (MCSs), the method comprising:
- generating a plurality of data streams from at least one input data;
performing a spatial processing on at least one of the data streams to generate a plurality of spatial streams, an MCS for each data stream being selected independently; and
transmitting the spatial streams via multiple transmit antennas.
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Abstract
A method and apparatus for implementing spatial processing with unequal modulation and coding schemes (MCSs) or stream-dependent MCSs are disclosed. Input data may be parsed into a plurality of data streams, and spatial processing is performed on the data streams to generate a plurality of spatial streams. An MCS for each data stream is selected independently. The spatial streams are transmitted via multiple transmit antennas. At least one of the techniques of space time block coding (STBC), space frequency block coding (SFBC), quasi-orthogonal Alamouti coding, time reversed space time block coding, linear spatial processing and cyclic delay diversity (CDD) may be performed on the data/spatial streams. An antennal mapping matrix may then be applied to the spatial streams. The spatial streams are transmitted via multiple transmit antennas. The MCS for each data stream may be determined based on a signal-to-noise ratio of each spatial stream associated with the data stream.
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Citations
38 Claims
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1. In a wireless communication system including a transmitter and a receiver, a method for implementing spatial data processing with unequal modulation and coding schemes (MCSs), the method comprising:
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generating a plurality of data streams from at least one input data;
performing a spatial processing on at least one of the data streams to generate a plurality of spatial streams, an MCS for each data stream being selected independently; and
transmitting the spatial streams via multiple transmit antennas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A transmitter for implementing spatial data processing with unequal modulation and coding schemes (MCSs), the transmitter comprising:
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a spatial processor for performing spatial processing on at least one of a plurality of data streams, an MCS for each data stream being selected independently; and
a plurality of transmit antennas for transmitting the data streams. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A receiver for implementing spatial data processing with unequal modulation and coding schemes (MCSs), the receiver comprising:
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at least one receive antenna for receiving a plurality of spatial streams, an MCS for each data stream mapped to the spatial streams being selected independently at a transmitter;
a channel estimator for performing channel estimation to generate a channel matrix; and
a spatial decoder for decoding the received spatial streams using the channel matrix. - View Dependent Claims (37, 38)
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Specification