An introduction to envelope constrained filter design
Antonio Cantoni, Ba‐Ngu Vo, Kok Lay Teo · Journal of Telecommunications and Information Technology · 2001
Envelope constrained filter design is concerned with the time domain synthesis of a filter whose response to a specified input signal stays within prescribed upper and lower bounds and in addition has minimal noise enhancement. In many practical applications, a ``soft`` approach, such as least mean square, is not the most suitable and it becomes necessary to use ``hard`` constraints such as the ones considered in the paper. We present an overview of key ideas related to robust continuous time envelope constrained filter design.