Differential space–time codes
are ways of transmitting data in
wireless communications. They are forms of
space–time code
A space–time code (STC) is a method employed to improve the reliability of data transmission (telecommunications), transmission in wireless, wireless communication systems using multiple transmit antenna (radio), antennas. STCs rely on trans ...
that do not need to know the
channel impairments at the receiver in order to be able to decode the signal. They are usually based on
space–time block code
Space–time block coding is a technique used in wireless, wireless communications to transmit multiple copies of a data stream across a number of Antenna (radio), antennas and to exploit the various received versions of the data to improve the r ...
s, and transmit one
block-code from a set in response to a change in the input signal. The differences among the blocks in the set are designed to allow the receiver to extract the data with good reliability. The first differential space-time block code was disclosed by
Vahid Tarokh and
Hamid Jafarkhani
Hamid Jafarkhani () (born 1966, in Tehran) is an Iranian-born American electrical engineer and professor. He serves as the Chancellor's Professor in electrical engineering and computer science in the Henry Samueli School of Engineering at the Uni ...
.
References
Encodings
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