Diversidade em Modulação Aplicada a Canais de Comunicações Móveis: Efeito dos Erros de Estimação de Canal na Transmissão de Imagens
In the present paper the modulation diversity (MD) technique is applied to image transmission (based on vector quantization) over a Rayleigh fading channel. The
benefits of MD are presented and discussed. The combination of MD with the index assignment technique (robust vector quantization) is evaluated. The work also evaluates the effects of channel estimation errors on the performance of a
communication system that uses MD, in terms of bit error rate and quality of the reconstructed images.
Authors who publish with 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 acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to 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 acknowledgement 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) prior to 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).