Counter-Based and MUX-Based Design of DPLL, a Comparative Study

Abstract

The design of modern day communication system emphasizes on transmission and proper reception of data at minimum possible error rates and also at the same time on maintenance of high degrees of precision. But there are additional factors that add to it such as the operating speeds of the communication device developed should be compatible with the other sub-systems of the setup. Also, the design complexity of the device and the cost of design should be minimum. So, based on the various factors as mentioned above, a situation arises where a number of designs can be put forward for the same device having their sets of merits and demerits. As such, an analysis of these different designs is essential to derive an optimal solution which is the main objective of this work. Considering the various constraints at hand, we would like to put forward a comparative study between two different designs of the communication receiver device DPLL, namely the counter based DPLL and Multiplexer based DPLL design which brings to light the merits of one design over the other in terms of key parameters such as
speed, design, complexity, hardware requirement etc.

Keywords: Multiplexer, oscillator, detector, phase, recovery