I want to implement some signal processing blocks in C++ so I did a bit of search on the available libraries for signal processing in C++ and I found that IT++ provides comprehensive set of functions, vector, matrices, etc. Additionally, it is widely used in many research projects related to wireless communications. However, it seems not to be maintained anymore (As there are couple of open issues in the Bug Tracker without resolution). Is my intuition correct?
If yes, what are the equivalent libraries that can provide similar functionalities like IT++? I am looking for a library that implements (LDPC, Reed Solomon, AWGN Channel, FFT/IFFT, Mod/Demo, Filtering, etc..). In addition, the library should support complex vector and matrices operations.