Method and apparatus for implementing space time processing
First Claim
1. A method for transmitting multiple data streams in an Institute of Electrical and Electronics Engineers (IEEE) 802.11 device, the method comprising:
- generating a first spatial stream and a second spatial stream;
on a condition that the first spatial stream and the second spatial stream belong to a first station (STA);
processing each of the first spatial stream and the second spatial stream to generate two or more space-time streams,mapping the space-time streams associated with the first STA to a plurality of data streams, andtransmitting the plurality of data streams via a plurality of antennas to the first STA;
on a condition that the first spatial stream belongs to a first STA and the second spatial stream belongs to a second STA;
processing the first spatial stream to generate a first set of two or more space-time streams and the second spatial stream to generate a second set of two or more space-time streams,mapping the first set of space-time streams and the second set of space-time streams to a plurality of data streams, andtransmitting the data streams via a plurality of antennas to the first STA and the second STA.
0 Assignments
0 Petitions
Accused Products
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.
-
Citations
12 Claims
-
1. A method for transmitting multiple data streams in an Institute of Electrical and Electronics Engineers (IEEE) 802.11 device, the method comprising:
-
generating a first spatial stream and a second spatial stream; on a condition that the first spatial stream and the second spatial stream belong to a first station (STA); processing each of the first spatial stream and the second spatial stream to generate two or more space-time streams, mapping the space-time streams associated with the first STA to a plurality of data streams, and transmitting the plurality of data streams via a plurality of antennas to the first STA; on a condition that the first spatial stream belongs to a first STA and the second spatial stream belongs to a second STA; processing the first spatial stream to generate a first set of two or more space-time streams and the second spatial stream to generate a second set of two or more space-time streams, mapping the first set of space-time streams and the second set of space-time streams to a plurality of data streams, and transmitting the data streams via a plurality of antennas to the first STA and the second STA. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. An Institute of Electrical and Electronics Engineers (IEEE) 802.11 device comprising:
a processor and a memory having stored therein executable instructions for execution by the processor to at least; generate a first spatial stream and a second spatial stream; on a condition that the first spatial stream and the second spatial stream belong to a first station (STA); process each of the first spatial stream and the second spatial stream to generate two or more space-time streams, map the space-time streams associated with the first STA to a plurality of data streams, and transmit the plurality of data streams via a plurality of antennas to the first STA; on a condition that the first spatial stream belongs to a first STA and the second spatial stream belongs to a second STA; process the first spatial stream to generate a first set of two or more space-time streams and the second spatial stream to generate a second set of two or more space-time streams, map the first set of space-time streams and the second set of space-time streams to a plurality of data streams, and transmit the data streams via a plurality of antennas to the first STA and the second STA. - View Dependent Claims (8, 9, 10, 11, 12)
Specification