An Alamouti-Eisenstein code over Z[w] delivers 0.79 dB asymptotic energy gain and improved finite-blocklength reliability compared to the classical Alamouti code over Z[i] due to A2+A2 hexagonal geometry.
Explicit space–time codes achieving the diversity–multiplexing gain tradeoff
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Finite-Blocklength Analysis of Alamouti Codes over Eisenstein Integers
An Alamouti-Eisenstein code over Z[w] delivers 0.79 dB asymptotic energy gain and improved finite-blocklength reliability compared to the classical Alamouti code over Z[i] due to A2+A2 hexagonal geometry.