Design of a rate 6/7 maximum transition run code

Maximum transition run (MTR) codes provide significant minimum distance gains when used with sequence detectors operating at high linear densities. A method for reducing the RLL k constraint associated with MTR block codes is presented. A block decodable, rate 4/5 MTR code with k=4 illustrates the technique. This reduction of k is combined with sliding-block decoding to develop a 97.8% efficient rate 6/7 MTR code with k=8.