Title :
Serial encoding and iterative detection of continuous phase modulations
Author :
Brutel, Christophe ; Boutros, Joseph ; Belvèze, Fabrice
Author_Institution :
Matra Nortel Commun., Bois-d´´Arcy, France
Abstract :
We consider the serial concatenation of a convolutional code and a continuous phase modulation separated by a random interleaver. It is shown that the continuous phase modulator has the same behavior as a recursive systematic convolutional code in serial turbo codes. The interleaver gain produced by the modulator and the random interleaving depends only on the minimum Hamming distance of the outer code. A soft-input soft-output detection algorithm is described and applied in an iterative joint detection-decoding scheme. Simulated performance over Gaussian and Rayleigh channels shows a dramatic gain over both uncoded modulation and classic detection.
Keywords :
Gaussian channels; Rayleigh channels; channel coding; concatenated codes; continuous phase modulation; convolutional codes; interleaved codes; iterative decoding; signal detection; turbo codes; CPM; Gaussian channels; Rayleigh channels; continuous phase modulation; convolutional code; interleaver gain; iterative detection; iterative joint detection-decoding scheme; minimum Hamming distance; outer code; random interleaving; recursive systematic convolutional code; serial concatenation; serial encoding; serial turbo codes; soft-input soft-output detection algorithm; Continuous phase modulation; Convolutional codes; Detection algorithms; Encoding; Hamming distance; Interleaved codes; Modulation coding; Phase detection; Phase modulation; Turbo codes;
Conference_Titel :
Global Telecommunications Conference, 1999. GLOBECOM '99
Print_ISBN :
0-7803-5796-5
DOI :
10.1109/GLOCOM.1999.831727