Title :
The impact of white gaussian noise mismatch on linear and decision feedback equalizers
Author :
Gozzo, F. ; Anderson, John B.
Author_Institution :
Loral Federal Syst., Owego, NY, USA
Abstract :
Analyzes the sensitivity of equalizers to white gaussian noise mismatch, which exists whenever the noise power observed during training differs from that observed during detection. A closed-form solution for the mean-square error is obtained for linear and decision feedback equalizers as a function of the channel spectrum and degree of noise mismatch. The results show that increasing equalizer complexity may actually degrade performance in the presence of channel mismatch.<>
Keywords :
Gaussian channels; Gaussian noise; communication complexity; decision feedback equalisers; sensitivity analysis; signal detection; white noise; channel spectrum; closed-form solution; decision feedback equalizers; detection; equalizer complexity; linear equalizers; mean-square error; noise power; sensitivity; training; white gaussian noise; white gaussian noise mismatch; Closed-form solution; Decision feedback equalizers; Degradation; Gaussian noise;
Journal_Title :
Communications, IEEE Transactions on
