| 摘要 |
FIELD: communications engineering; simulating digital communication channels with separate and grouping errors. ^ SUBSTANCE: proposed method includes evaluation of set of communication channel states S0,S1, ..., Sm - 1 and calculation of conditional error probabilities P(e/s) in each state s" i = 0, ..., m - 1 of communication channel, and error acquisition in communication channel in compliance with conditional error probability for current state of communication channel; in the process probability of error-free interval p(0i) of i bits is found, and conditional probabilities p(0i1/11), p(0i1/01) of error-free intervals of i bits are calculated with respect to them basing on probabilities p(0i) and using recurrent rules during each current time interval and preceding one on condition that for error generation use is made of two states of communication channel corresponding to combination of errors 11 or 01; random number p uniformly distributed within interval between 0 and 1 is generated; conditional probabilities p(0i1/11), p(0i1/01) are summed up starting from i = 0 resulting in sequence 0k1 that constitutes bit-by-bit stream of communication channel errors. ^ EFFECT: enhanced speed. ^ 1 cl, 1 tbl |
