Design guidelines for the high-speed dynamic partial reconfiguration based software defined radio implementations on Xilinx Zynq FPGA

Abstract

Reconfigurability of Field Programmable Gate Array (FPGA) makes it one of the most promising approaches in the implementation of the Software Defined Radio (SDR). FPGA Dynamic Partial Reconfiguration (DPR) feature emphasizes that approach by allowing the implemented SDR system to switch between multiple communications standards in runtime reusing the same FPGA hardware resources. Reconfiguration time is a significant parameter in DPR designs especially when a fast switching is required in real time system like SDR. In this paper, different designs of Partial Reconfiguration (PR) controllers are studied and evaluated according to their impact to improve the reconfiguration time of DPR-based SDR implementation. A multi-standard convolutional encoder design is implemented using DPR with different PR controllers as a case study. The design is implemented and tested on Xilinx Zynq evaluation board “ZC702”. This comparative study provides important design insights and recommendations to the DPR-based SDR designers to help them select the best PR controller based on their system throughput requirement and power budget.