Abstract
The golden code is a full-rate full-diversity space---time code for the two-input two-output channel with good performance but high decoding complexity. The overlaid Alamouti codes were recently proposed as an alternative; in exchange for a slight performance penalty, they have lower decoding complexity on quasistatic channels with QAM alphabets. However, the complexity advantage of the overlaid codes vanishes for time-varying channels. This paper proposes the asymmetric golden code, a novel full-rate and full-diversity space---time code for the two-input two-output channel that offers reduced-complexity decoding on both quasistatic and time-varying channels.
Published Version
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