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The problem of detecting turbo encoded signals transmitted over multipath channels is addressed and a new structure of turbo decoder combined with decision feedback equalizer (DFE) is presented. In this structure, a DFE is implemented in the turbo decoding iteration loop such that the DFE and a modified turbo decoder, which generates both information and parity bits, operate in a mutual support fashion. Simulation results are presented for a rate 1/3 turbo code, which has been selected for 3G mobile systems, with binary phase-shift keying (BPSK) modulation, transmitted over multipath channels having severe frequency distortion. Compared with a turbo equalizer, where soft extrinsic information is calculated from the detection and decoding steps and passed between equalizer and turbo decoder, the new structure is much simpler but efficient
Published in:
Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd
(Volume:3
)
Date of Conference: 2001
- Page(s):
- 1634 - 1638 vol.3
- Meeting Date :
- 06 May 2001-09 May 2001
- ISSN :
- 1090-3038
- Print ISBN:
- 0-7803-6728-6
- INSPEC Accession Number:
- 7183685
- Conference Location :
- Rhodes
- Digital Object Identifier :
- 10.1109/VETECS.2001.944971
- Product Type:
- Conference Publications
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