In contrast to [[space-time block code|space–time block codes]] (STBCs), they are able to provide both coding gain and diversity gain and have a better [[bit error rate|bit-error rate]] performance. However, being based on [[convolutional code|trellis codes]], they are more complex than STBCs to encode and decode; they rely on a [[Viterbi algorithm|Viterbi decoder]] at the receiver where STBCs need only [[linear]] processing.
STTCs were discovered by [[Vahid Tarokh]] et. al in [[1998]]<sup>[[#References.{{ref|1]],[[#Referencesconstruction}}{{ref|2]]</sup>.performance}}
==References==
#'''{{note|construction}}{{journal reference|Author=Vahid Tarokh, Nambi Seshadri, and A. R. Calderbank''', [http://www.stanford.edu/~leipoo/ee359/Tarokh9.pdf "Space–time|Title=Space–time codes for high data rate wireless communication: Performance analysis and code construction"], ''[[Institute of Electrical and Electronics Engineers|IEEE]] [[Journal=IEEE Transactions on Information Theory|Trans. Inform. Theory]]'', vol. Pages=744–765|Volume=44,|Issue=2|Date=March pp1998|ID={{doi|10. 744–765, Mar. 19981109/18.661517}}}}
#'''{{note|performance}}{{journal reference|Author=Vahid Tarokh, Ayman Naguib, Nambi Seshadri and A. Robert Calderbank''', "|Title=Space–time codes for high data rate wireless communication: performance criteria in the presence of channel estimation errors, mobility, and multiple paths", ''|Journal=IEEE Trans.Transactions Commun.'', vol. 47, no. 2, pp.on Communications|Pages=199–206,|Volume=47|Issue=2|Date=February Feb1999|ID={{doi|10. 19991109/26.752125}}}}
