Manchester encoder component for data processing IoT environment

Abstract

Line encoding is crucial especially in data communication which part of internet of things environment. Line encoding doing encode raw bit stream and applying some rules before transmitting to transmission medium. Some example of encoding technique is: non-return zero encoding (NRZ), return-zero encoding, and Manchester encoding. Manchester coding technique have advantages compared to NRZ and RZ coding. Manchester coding can recognize bit interval and will have no problem to encode long same bit stream. Manchester encoder commonly built using logical XOR gate, with clock and bit stream as input and output of XOR gate will determined as encoded signal. The common design has a weakness since the clock is use in operation, and the output will be separate into two parallel bit stream. Common design also has spike glitch in some transitions. In this work, the new design of Manchester encoder using FPGA device is proposed to overcome common design problems and suitable to be implemented in IoT environment.