RAO Wei, GAO Hui-juan, DUAN Mei-yi, et al. New Blind Equalization Algorithm Based on a Mapping from a Complex Exponential Function[J]. Acta Electronica Sinica, 2016, 44(5): 1009-1016.
RAO Wei, GAO Hui-juan, DUAN Mei-yi, et al. New Blind Equalization Algorithm Based on a Mapping from a Complex Exponential Function[J]. Acta Electronica Sinica, 2016, 44(5): 1009-1016. DOI: 10.3969/j.issn.0372-2112.2016.05.001.
A new complex exponential function is defined to map the real and imaginary parts of a classic 16-QAM nonconstant modulus signal to the unit circle
respectively.With the relationship between the real and imaginary parts of the new constellation after mapping
a new cost function is built and then a new blind equalization algorithm is proposed.The proposed algorithm can converge the steady-state mean square error (MSE) to zero under a noiseless environment
which is different from the famous constant modulus algorithm (CMA) and some CMA-based improved algorithms.In addition
we provide the theoretical analysis of the proposed algorithm.Simulation results demonstrate that the proposed algorithm has the lower steady-state MSE than CMA and some CMA-based improved algorithms.