An encoding/framing scheme for multitone modulation over impulsive channels which allows efficient operation in multipoint to point channels which are affected by ingress (narrowband noise) and impulsive (burst) interference. The coding is achieved using a concatenated approach, with the inner code being...http://www.google.de/patents/US20040066738?utm_source=gb-gplus-sharePatent US20040066738 - Method and apparatus for encoding/framing for modulated signals over impulsive channels