Title :
The effects of PN sequences on the misconvergence of the constant modulus algorithm (CMA)
Author :
Axford, R.A., Jr. ; Milstein, L.B. ; Zeidler, J.R.
Author_Institution :
Space & Naval Warfare Syst. Center, San Diego, CA, USA
fDate :
2/1/1998 12:00:00 AM
Abstract :
The constant modulus algorithm (CMA) can misconverge when the received two-dimensional (2-D) signal is derived from encoding a binary PN sequence. The distortion of the probabilistic symmetry of the transmitted constellation can be controlled by careful selection of the underlying binary PN sequence, thereby influencing the convergence behavior of CMA
Keywords :
binary sequences; convergence; equalisers; phase shift keying; probability; pseudonoise codes; quadrature amplitude modulation; 2D signal; CMA; PN sequences; binary sequence; blind equalisation; constant modulus algorithm; convergence behavior; encoding; misconvergence; probabilistic symmetry distortion; pseudo-random PSK signals; pseudo-random QAM signals; two-dimensional signal; Blind equalizers; Clustering algorithms; Convergence; Cost function; Encoding; Minimization methods; Modems; Quadrature amplitude modulation; Transmitters; Two dimensional displays;
Journal_Title :
Signal Processing, IEEE Transactions on
