Adaptive equalization techniques for multipath fading and co-channel interference
- 30 December 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
The performance of an adaptive fractionally spaced decision feedback equalizer (DFE) in the presence of cyclostationary cochannel interference (CCI) for a frequency-selective quasistatic channel environment is investigated. Simulation and calculation results show that the mean squared error (MSE) convergence for a DFE adapted directly with either the least mean square (LMS) or recursive least squares (RLS) algorithm is prohibitively slow or relatively rapid, respectively. Simulation results also indicate that the performance of an alternative adaptive approach with a computed DFE is limited by its CCI auto-correlation estimation, which requires an unrealistically accurate channel impulse response (CIR) estimate. The preferred approach is to employ an RLS DFE which does not require explicit CIR or CCI autocorrelation estimation.Keywords
This publication has 4 references indexed in Scilit:
- Adaptive equalization for a multipath fading channel in the presence of co-channel interferencePublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Cyclostationary crosstalk suppression by decision feedback equalization on digital subscriber loopsIEEE Journal on Selected Areas in Communications, 1992
- Adaptive equalization for TDMA digital mobile radioIEEE Transactions on Vehicular Technology, 1991
- Minimum mean square equalization in cyclostationary and stationary interference-analysis and subscriber line calculationsIEEE Journal on Selected Areas in Communications, 1991