Unified technique for multi-rate trellis coding and decoding

   
   

The present invention, generally speaking, provides efficient multi-rate trellis encoder and decoder structures. The trellis encoder allows for a variable number of uncoded bits to be represented in a transmit symbol. The decoder maps received symbols to a smaller constellation by dropping selected symbol bits, whereby, for each of multiple cosets, points within that coset are mapped to a fewer number of points. Substantial simplification of the decoder structure is therefore achieved.

La actual invención, hablando generalmente, proporciona las estructuras eficientes del codificador y del decodificador del enrejado de la multi-tarifa. El codificador del enrejado permite un número variable de pedacitos sin codificar para ser representado en un símbolo del transmitir. El decodificador traz símbolos recibidos a una constelación más pequeña cayendo pedacitos seleccionados del símbolo, por el que, para cada uno de cosets múltiples, los puntos dentro de ese coset traz a un poco número de puntos. La simplificación substancial de la estructura del decodificador por lo tanto se alcanza.

 
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