PCMA: Parametric constant modulus algorithm for demodulating co-channel FM signals
Date of Original Version
We propose a new approach called parametric constant modulus algorithm (PCMA) for demodulating two co-channel signals, each of which are frequency modulated. The algorithm is of interest in cellular communications and military/intelligence applications. Our method is based on minimizing a constant-modulus error (CME) criterion. It as different from the well-known constant modulus algorithm (CMA). Firstly, the CMA is traditionally employed for channel equalization problems. Secondly, the CMA minimizes the CME over the parameters of a transversal filter. On the other hand, our procedure extends the CMA concept to the co-channel signal separation problem: It uses a parametric model for the underlying signals and minimizes the CME over the parameters of the signal model, hence the name parametric CMA (PCMA).
Conference Record - Asilomar Conference on Signals, Systems and Computers
Rao, Ashwin, and Ramdas Kumaresan. "PCMA: Parametric constant modulus algorithm for demodulating co-channel FM signals." Conference Record - Asilomar Conference on Signals, Systems and Computers 1, (1995): 473-477. doi:10.1109/ACSSC.1995.540594.