Title :
Performance of adaptive Volterra equalizers on nonlinear satellite channels
Author :
Gutierrez, Alberto ; Ryan, William E.
Author_Institution :
Center for Space Telemetering & Telecommun. Syst., New Mexico State Univ., Las Cruces, NM, USA
Abstract :
Adaptive nonlinear Volterra equalizers are developed for compensation of nonlinear signal distortion in a satellite communications channel. The equalizers do not require a Volterra characterization of the channel and adaption of the weights is accomplished with the least-mean square (LMS) algorithm. Convergence of the equalizers are discussed as well as a multiple-step LMS adaption method which improves the convergence characteristics. The authors compare the performance and complexity of these equalizers to that of a linear equalizer for QPSK, 8PSK and 16QAM
Keywords :
adaptive equalisers; communication complexity; convergence of numerical methods; digital radio; electric distortion; least mean squares methods; quadrature amplitude modulation; quadrature phase shift keying; satellite communication; 16QAM; 8PSK; QPSK; adaptive Volterra equalizers; compensation; complexity; convergence; least-mean square algorithm; multiple-step LMS adaption method; nonlinear Volterra equalizers; nonlinear satellite channels; nonlinear signal distortion; performance; Band pass filters; Convergence; Equalizers; Intersymbol interference; Nonlinear distortion; Nonlinear filters; Quadrature amplitude modulation; Satellite broadcasting; Satellite communication; Signal to noise ratio;
Conference_Titel :
Communications, 1995. ICC '95 Seattle, 'Gateway to Globalization', 1995 IEEE International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2486-2
DOI :
10.1109/ICC.1995.525217
