| 摘要 |
A method for estimating at least one optical link parameter using a Viterbi equalizer (1) comprises the following steps: forming a first parameter set (S) characteristic of a distorted signal sequence using averaged values (M(a),M(b),M(d),M(g)) for a given sequence (abdg) of bit patterns (a,b,c,d,...), comparing the first parameter set (S) to a plurality of reference parameter sets (R1,R2,...) characteristic for reference signal sequences of the same sequence (abdg) of bit patterns (a,b,c,d,...), each of the reference parameter sets (R1,R2,...) having a known value of the at least one optical link parameter, and selecting the reference parameter set (R) with the closest correlation to the first parameter set (S), the known value of the at least one optical link parameter of the selected reference parameter set (R) being used as an estimate for the parameter.
|
