Design and performance analysis of a low complexity digital clock recovery algorithm for software-defined radio applications

In this paper, we propose and study a low-complexity digital clock recovery scheme suitable for implementation on programmable platforms, such as digital signal processing (DSP) or field-programmable gate-array (FPGA) platforms. Performance is established in terms of mean-square timing error and the required computational complexity, a key factor in the successful implementation of efficient software-defined radios (SDR). It is shown that the proposed algorithm achieves a superior performance when compared with the existing algorithms for a wide range of operating parameters. To assess complexity in terms of resource utilization, the FPGA platform is used to study the proposed algorithm along with other well-known algorithms.