Synthesis of analog signals using QUBO-based spectral shaping of binary sequences

Digital synthesis of test signals is a subject of ongoing research in electrical engineering. Owing to their simplicity, it is of particular interest the possibility of using binary sequences to generate high-quality analog signals. Published results report the usage of ΣΔ-based methods to generate binary spectrally-shaped test signals that, once filtered, result in high-quality analog signals useable for testing purposes. This paper proposes the usage of quadratic binary unconstrained optimization as an alternative providing comparable or superior results, thus representing a valid alternate synthesis method. The approach is first introduced by the usage of several examples. Experimental results are shown that validate the presented signal synthesis method.