Method and system for enhancing cell error ratio and cell...

Details Method and system for enhancing cell error ratio and cell... Method and system for enhancing cell error ratio and cell...

H - Electricity

04

B

H04B 7/185 (2006.01) H03M 13/43 (2006.01) H04L 12/56 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2296918

A method and apparatus for enhancing the cell error ratio and the cell misinsertion rate for a given cell loss ratio is provided. A predetermined number, C, of ATM cells (150, 250) are packed together and encoded using a strong t-error correcting BCH block code, such as a Reed-Solomon code to produce an encoded block (162, 262). After transmission, the received data segment (156, 256) may include s errors. The data segment (156, 256) is decoded, and if s > t, decoder failure occurs with very high probability and the data segment is discarded. The CER obtained is superior to present ATM systems. The decoded block is unpacked into C ATM cells (160, 260). Optionally, the header fields (164, 264) of the C ATM cells may be decoded. In most cases where errors are present in the header, nonzero syndrome occurs with high probability, and the C ATM cells (160, 260) are discarded. The CMR obtained is superior to present ATM systems. The delivered ATM cells (160, 260) are virtually error free with very high certainty.

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