| 摘要 |
PCT No. PCT/FI96/00106 Sec. 371 Date Aug. 22, 1997 Sec. 102(e) Date Aug. 22, 1997 PCT Filed Feb. 22, 1996 PCT Pub. No. WO96/26583 PCT Pub. Date Aug. 29, 1996A receiver and a method for determining connection quality in a cellular radio system. Received signals are decoded with a Viterbi decoder. Decision variables, representing decisions, are converted into a float value format. The converted decision variables are stored in a memory unit. During a traceback step of a Viterbi algorithm, a sum of absolute values of stored ones of the decision variables, which are in a correct path, are calculated and a minimum value of the absolute values of the stored ones of the decision variables in the correct path is calculated. The sum of the absolute values is averaged over a desired measurement period and compared to a predetermined threshold to obtain a bit error rate over a connection. Faulty signal frames are detected based on the minimum value of the absolute values. |
