The document presents research from the International Conference on Systems, Science, Control, Communication, Engineering and Technology 2017, focusing on two key topics: a secure image transmission technique called secret fragment visible mosaic image creation, and improvements in 4G/5G systems to mitigate multipath effects. The proposed image transmission method offers a secure way of transmitting images without loss, while the study on wireless communication explores techniques to enhance performance in the presence of multipath channels. Both papers highlight advancements in data transmission security and communication reliability in the modern technological landscape.