On fast-decodable space-time block codes

Biglieri, Ezio; Hong, Yi; Viterbo, Emanuele

doi:http://dx.doi.org/10.1109/TIT.2008.2009817

On fast-decodable space-time block codes

Citation

Biglieri E, Hong Y, Viterbo E. On fast-decodable space-time block codes. IEEE Trans. Inf. Theory. 2009; 55(2): 524-530. DOI 10.1109/TIT.2008.2009817

Abstract

We focus on full-rate, fast-decodable space–time block codes (STBCs) for 2 x 2 and 4 x 2 multiple-input multiple-output (MIMO) transmission. We first derive conditions and design criteria for reduced-complexity maximum-likelihood (ML) decodable 2 x 2 STBCs, and we apply them to two families of codes that were recently discovered. Next, we derive a novel reduced-complexity 4 x 2 STBC, and show that it outperforms all previously known codes with certain constellations.