Block Error Rate (BLER) is a ratio of the number of erroneous blocks to the total number of blocks transmitted on a digital circuit. It is used in measuring the error rate when extracting data frames from a

Compact Disc The compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony to store and play digital audio recordings. In August 1982, the first compact disc was manufactured. It was then released in Octo ...

(CD). The BLER measurement is often used as a quality control measure with regards to how well audio is retained on a compact disc over time. BLER is also used for

W-CDMA The Universal Mobile Telecommunications System (UMTS) is a third generation mobile cellular system for networks based on the GSM standard. Developed and maintained by the 3GPP (3rd Generation Partnership Project), UMTS is a component of the I ...

performance requirements tests (demodulation tests in multipath conditions, etc.). BLER is measured after channel de-interleaving and decoding by evaluating the Cyclic Redundancy Check (CRC) on each transport block. Block Error Rate (BLER) is used in LTE/4G technology to determine the in-sync or out-of-sync indication during radio link monitoring (RLM). Normal BLER is 2% for an in-sync condition and 10% for an out-of-sync condition.

References

{{cite web , url = http://rfmw.em.keysight.com/rfcomms/refdocs/wcdma/wcdma_meas_wblerror_desc.html , title = Block Error Ratio (BLER) Measurement Description , access-date=23 December 2015 , date = February 28, 2014 Compact disc Audio software