Application of the CCIR Bit Error Ratio Recommendation to Real Digital Radio Paths

The CCIR (International Radio Consultative Committee) has published a recommendation on the "Allowable bit error ratios at the output of the hypothetical reference digital path for radio-relay systems for telephony" (Recommendation 594). It has been normal practice to augment such a recommendation on performance with a corresponding recommendation for so-called real digital paths, as discussed in CCIR Report 930. This correspondence proposes and justifies the form that such a recommendation could take.