A previously proposed coding scheme (Soljanin 1997) for generating bipolar dc-free sequences allowed construction of several new dc-free codes with lower encoding complexity than the existing codes with comparable rates. We here discuss decoding of the new codes on a 1-D/sup 2/ partial response channel (PR4), and test the performance of the optimal and various suboptimal detectors by simulation. In particular, we show how the special codeword structure of the newly constructed codes can be advantageously used to reduce the decoding complexity.
['Emina Soljanin']
Decoding techniques for some specially constructed dc-free codes