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New spectrum shaping codes and their trellises

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Publication date11/1995
Host publicationGlobal Telecommunications Conference, 1995. GLOBECOM '95., IEEE
Place of PublicationSingapore
Number of pages4
ISBN (Print)0-7803-2509-5
<mark>Original language</mark>English


A technique for the manipulation of the frequency spectrum of a block code is introduced, using generalised array codes (GACs) and trellis decoding. It is shown that a spectral shaping code can be derived from a normal GAC without increasing the decoding trellis complexity. A scheme allowing real-time adaptation to adverse channel characteristics is described