Title :
Decoding techniques for some specially constructed dc-free codes
Author_Institution :
Lucent Technol., AT&T Bell Labs., Murray Hill, NJ, USA
Abstract :
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-D2 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
Keywords :
channel coding; computational complexity; decoding; digital magnetic recording; partial response channels; sequences; 1-D2 partial response channel; PR4; bipolar dc-free sequences; codeword structure; decoding complexity; optimal detectors; performance; specially constructed dc-free codes; suboptimal detectors; Block codes; Decoding; Detectors; Euclidean distance; Frequency; Magnetic recording; Modulation coding; Partial response channels; Testing; Transfer functions;
Conference_Titel :
Communications, 1997. ICC '97 Montreal, Towards the Knowledge Millennium. 1997 IEEE International Conference on
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-3925-8
DOI :
10.1109/ICC.1997.595064
