Differential space–time codes
are ways of transmitting data in
wireless communications
Wireless communication (or just wireless, when the context allows) is the transfer of information between two or more points without the use of an electrical conductor, optical fiber or other continuous guided medium for the transfer. The most ...
. They are forms of
space–time code 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
In physics, spacetime is a mathematical model that combines the three dimensions of space and one dimension of time into a single four-dimensional manifold. Spacetime diagrams can be used to visualize relativistic effects, such as why differen ...
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
Vahid Tarokh (; born ) is an Iranian-American electrical engineer, mathematician, computer scientist, and professor. Since 2018, he has served as a Professor of Electrical and Computer Engineering, a Professor of Mathematics, and the Rhodes Family ...
and
Hamid Jafarkhani
Hamid Jafarkhani ( fa, حمید جعفرخانی) (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 S ...
.
References
Encodings
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