System and method to determine a bit error probability of received data within a cellular wireless network

摘要

RF communications received by a wireless terminal from a servicing base station are used to determine the current block BEP. These RF communications may be in the form of RF bursts that are part of a data frame. The signal to noise ratio (SNR) of the RF bursts is determined and sequences of soft decisions from the RF bursts are extracted. The SNR maps to an estimated BEP based upon the modulation format of the RF bursts. The soft decisions decode to produce a data block. When the soft decisions decoded favorably, the re-encoded data block produces a sequence of re-encoded decisions. Comparing the re-encoded decisions to the soft decisions yields a re-encoded bit error (RBER). When the decoding is unsuccessful, the current block BEP is estimated upon the estimated BEP derived from the SNR or the RBER threshold. Otherwise, both the estimated BEP and RBER may be used to determine the BEP.