| 摘要 |
A receiver system contains an analog pre-filter (207 or 619), an analog-to-digital converter (210), a digital equalizer (212), and a decoder (605) arranged sequentially for processing an input analog signal (yk). The pre-filter produces a filtered analog signal (Zs) with reduced intersymbol interference. The converter provides analog-to-digital signal conversion. Digital equalization circuitry in the equalizer operates according to a transfer frmnction c - 1 z + c 0 + ∑ M i = 1 c i z - i to produce an equalized digital signal (a'k) as a stream of equalized digital values. Coefficients c-1 and c0 are fixed. Each other coefficient ci is adaptively chosen. The decoder converts the equalized digital values, or intermediate values generated therefrom, into a stream of symbols. A receiver system may include two or more receivers each configured in the foregoing way with the digital equalization circuitry in each receiver operating according to a transfer function ∑ i = - N M c i z - i where at least coefficients c-1, c0, and c1 are non-zero.
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