Skip to content


  • Research Article
  • Open Access

A Class of High-Rate Low-Complexity Error-Detecting RLL Codes

EURASIP Journal on Advances in Signal Processing20012001:690150

  • Received: 3 April 2000
  • Published:


We present a new methodology for the construction of high-rate channel modulation run-length-limited RLL codes. Simple modulation encoders and decoders are constructed, with low error propagation during decoding. They combine partial error detection capability (PED) to boost the performance of a concatenated outer Error Correction Code (ECC) [1]. Moreover, current systems are using low redundancy ECC, and the overall rate is mainly determined by the inner modulation code rate, which critically is to be maintained high. Code rates , for example, 16/17, 24/25 and higher are achievable, with efficiency exceeding 0.94 and 0.96, respectively. The proposed fixed length block decodable codes, are generalized schemes of the type for .


  • run-length-limited constrained codes

Authors’ Affiliations

Texas Instruments, Inc., Dallas, TX 75243, USA
Agere Systems, Milpitas, CA 95035, USA


© Bessios 2001