A general methodology is provided to obtain {TAIL ~ the multilevel decoders}, which is based on reducing {HEAD ~ failures} due to trapping sets and improving the guaranteed error correction capability of a code 
A general methodology is provided to obtain { TAIL ~ the multilevel decoders } , which is based on reducing { HEAD ~ failures } due to trapping sets and improving the guaranteed error correction capability of a code
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH