Approximate equiangular tight frames for compressed sensing and CDMA applications
Approximate equiangular tight frames for compressed sensing and CDMA applications
Performance guarantees for recovery algorithms employed in sparse representations, and compressed sensing highlights the importance of incoherence. Optimal bounds of incoherence are attained by equiangular unit norm tight frames (ETFs). Although ETFs are important in many applications, they do not exist for all dimensions, while their construction has been proven …