Main Article Content
We introduce two different iterative receivers for space-time coded data transmitted through frequency selective fading channels. Both receivers operate semi-blindly and make use of the expectation maximization algorithm for estimating the unknown channel. The approaches differ in the sense that maximum-a-posteriori data detection and decoding are either performed over a supertrellis or over separate trellises. The two approaches are compared in terms of trellis complexity, achievable diversity level. and bit error rate. The supertrellis approach shows to be less computational demanding and has a faster convergence rate. The separate approach can achieve a higher diversity level and thus a smaller bit error rate. We explore this trade-off with examples and computer simulations. These show that, in many cases, the supertrellis approach can be a better solution than the separate approach.
How to Cite
Demo Souza, R. (2015). Receptores Iterativos para Canais MIMO Seletivos em Freqüência e Quase Estáticos: Uma Análise Comparativa. Journal of Communication and Information Systems, 19(2). https://doi.org/10.14209/jcis.2004.5
Authors who publish in this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Authors can enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) before and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).