Title :
Finite-precision effects analysis of adaptive canceler-equalizer
Author :
Lee, Inseop ; Jenkins, W. Kenneth
Author_Institution :
Coordinated Sci. Lab., Illinois Univ., Urbana, IL, USA
Abstract :
In this paper, we investigate the finite precision effects of an adaptive canceler-equalizer (ACE) structure. The degradation due to finite precision is unavoidable in digital implementations of the ACE. This analysis is necessary to select the proper number of bits for digital implementation. We provide a tool to estimate the minimum mean squared error (MMSE) as a function of the number of quantizer bits. The numerical results are shown to prove the accuracy of this estimation
Keywords :
adaptive equalisers; adaptive filters; adaptive signal processing; digital filters; feedback; feedforward; filtering theory; interference suppression; intersymbol interference; matrix algebra; roundoff errors; ISI cancellation; MMSE estimation; adaptive canceler-equalizer; digital implementations; feedback filter; feedforward filter; finite-precision effects analysis; minimum mean squared error; quantizer bits; Adaptive algorithm; Adaptive equalizers; Algorithm design and analysis; Decision feedback equalizers; Degradation; Digital communication; Finite impulse response filter; Intersymbol interference; Pulse modulation; Quantization;
Conference_Titel :
Circuits and Systems, 1999. 42nd Midwest Symposium on
Conference_Location :
Las Cruces, NM
Print_ISBN :
0-7803-5491-5
DOI :
10.1109/MWSCAS.1999.867747
