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A.R. Calderbank
Researcher at AT&T
Publications - 110
Citations - 28619
A.R. Calderbank is an academic researcher from AT&T. The author has contributed to research in topics: Block code & Linear code. The author has an hindex of 44, co-authored 102 publications receiving 27709 citations. Previous affiliations of A.R. Calderbank include AT&T Labs & Mathematical Sciences Research Institute.
Papers
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Journal ArticleDOI
Space-time block codes from orthogonal designs
TL;DR: A generalization of orthogonal designs is shown to provide space-time block codes for both real and complex constellations for any number of transmit antennas and it is shown that many of the codes presented here are optimal in this sense.
Journal ArticleDOI
Space-time codes for high data rate wireless communication: performance criterion and code construction
TL;DR: In this paper, the authors consider the design of channel codes for improving the data rate and/or the reliability of communications over fading channels using multiple transmit antennas and derive performance criteria for designing such codes under the assumption that the fading is slow and frequency nonselective.
Book
Space-time block coding for wireless communications: performance results
TL;DR: It is shown that using multiple transmit antennas and space-time block coding provides remarkable performance at the expense of almost no extra processing.
Journal ArticleDOI
Quantum error correction via codes over GF(4)
TL;DR: In this article, the problem of finding quantum error-correcting codes is transformed into one of finding additive codes over the field GF(4) which are self-orthogonal with respect to a trace inner product.
Journal ArticleDOI
The Z/sub 4/-linearity of Kerdock, Preparata, Goethals, and related codes
TL;DR: Certain notorious nonlinear binary codes contain more codewords than any known linear code and can be very simply constructed as binary images under the Gray map of linear codes over Z/sub 4/, the integers mod 4 (although this requires a slight modification of the Preparata and Goethals codes).