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Sobre

Sobre

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Tópicos
de interesse
Detalhes

Detalhes

  • Nome

    Kamran Shafafi
  • Cargo

    Assistente de Investigação
  • Desde

    01 dezembro 2021
Publicações

2023

UAV-Assisted Wireless Communications: An Experimental Analysis of Air-to-Ground and Ground-to-Air Channels in Open Environments

Autores
Shafafi, K; Almeida, EN; Coelho, A; Fontes, H; Ricardo, M; Campos, R;

Publicação
CoRR

Abstract

2023

Joint Traffic and Obstacle-aware UAV Positioning Algorithm for Aerial Networks

Autores
Shafafi, K; Coelho, A; Campos, R; Ricardo, M;

Publicação
CoRR

Abstract

2009

Optimizing the pictorial compacted data detection process for working at the noisy environment, using reversible symmetrical codes

Autores
Shafafi K.; Samanfar A.; Saremian E.; Moradtalab O.;

Publicação
2009 International Conference on Information and Multimedia Technology, ICIMT 2009

Abstract
Variable-length codes, using source statistical features, improve the encoding. However, using these codes can results in error propagation in bit string transmitted to noisy transmission environments. This paper has used reversible symmetrical codes in the bit string obtained from JPEG compressor in order to overcome this problem. several examples of reversible code design algorithm have been reviewed and a symmetrical code based on Huffman code has been analyzed and deigned for JPEG compressor Jpeg compressor has been simulated by Huffman standard code and by reversible symmetrical code and the amount of their compression has been compared for several pictures Also, optimization of detection trend in noisy condition has been displayed. © 2009 IEEE.