A timing recovery criterion derived from the tap weights of a decision feedback equalizer for QAM digital subscriber line systems
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) - Tập 2 - Trang 1281-1284 vol.2
Tóm tắt
In this paper a timing recovery criterion is derived from the optimum feedforward coefficients of an adaptive symbol-spaced complex-valued decision feedback equalizer (DFE). The criterion is deduced by evaluating the relationship of sampling phase and corresponding, in the minimum mean square error (MMSE) sense optimum, equalizer tap weights exemplarily for a typical digital subscriber line (DSL) scenario. It turns out that a linear combination of the real and imaginary parts of the precursor and cursor coefficient can be applied as timing recovery criterion suitable for digital implementation.
Từ khóa
#Decision feedback equalizers #Quadrature amplitude modulation #DSL #Sampling methods #Filters #Timing jitter #Field-flow fractionation #Signal to noise ratio #Signal processing #TransceiversTài liệu tham khảo
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