Title :
Coded block OFDM for the frequency selective fading channel
Author :
McCloud, Michael L.
Author_Institution :
Dept. of Electr. Eng., Pittsburgh Univ., PA, USA
Abstract :
We consider the use of block spreading in a multicarrier system to gain diversity advantage when employed over multipath fading channels. In particular, we use block spreading matrices as a full rate "inner code", together with an error correcting outer code to form a concatenated system suitable for turbo-iterative detection. The resulting coded system is shown to outperform standard coded OFDM as well as the rotated spreading approach of Bury et. al.
Keywords :
OFDM modulation; block codes; code standards; concatenated codes; diversity reception; error correction codes; fading channels; iterative methods; matrix algebra; modulation coding; multipath channels; turbo codes; block spreading matrices; concatenated system; diversity; error correcting outer code; frequency selective channel; inner code; multicarrier system; multipath fading channel; standard coded OFDM; turbo-iterative detection; Code standards; Concatenated codes; Diversity reception; Equalizers; Error correction codes; Fading; Frequency conversion; Frequency modulation; OFDM modulation; Parity check codes;
Conference_Titel :
Signals, Systems and Computers, 2004. Conference Record of the Thirty-Eighth Asilomar Conference on
Print_ISBN :
0-7803-8622-1
DOI :
10.1109/ACSSC.2004.1399147
