Error performance of IEEE 802.6 metropolitan area networks

Error performance issues concerning IEEE Standard 802.6 metropolitan area networks (MANs) which will be based on fiber transmission systems are investigated. The error protection requirements for MAN cell headers are studied, and a simple cyclic redundancy check (CRC)-based scheme to provide single-bit correction and multiple-bit detection is proposed. The functions of the adaptation layer for data end points are discussed. A critical function of the data adaptation layer is to prevent corruption of information carried in 802.6 cells. Alternative ways of providing error protection are discussed and analyzed. It is shown that the alternative based on a CRC check per segment provides robust error protection and is amenable to very-high-speed implementation