Title :
Semi-random interleaver design criteria
Author :
Fragouli, Christine ; Wesel, Richard D.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
A spread interleaver of length N is a semi-random interleaver based on the random selection without replacement of N integers from 1 to N under a design constraint. This paper extends the spread-interleaver design method to multiple error events, based on the interleaver´s role in overall turbo code error event distances. The extension helps to explain why the spread interleaver is specifically designed to be semi-random. Simulation results show the performance achieved for a symbol-interleaved parallel concatenated trellis coded modulation (PCTCM) scheme.
Keywords :
concatenated codes; error statistics; interleaved codes; trellis coded modulation; turbo codes; PCTCM scheme; design constraint; multiple error events; overall error event distances; semi-random interleaver design; simulation results; spread interleaver; symbol-interleaved parallel concatenated trellis coded modulation; turbo codes; Concatenated codes; Convergence; Cost function; Decoding; Design methodology; Engineering profession; Minimization methods; Turbo codes;
Conference_Titel :
Global Telecommunications Conference, 1999. GLOBECOM '99
Print_ISBN :
0-7803-5796-5
DOI :
10.1109/GLOCOM.1999.831723
