Reduced-Complexity Receivers for Strongly Narrowband Intersymbol Interference Introduced by Faster-than-Nyquist Signaling
(2012) In IEEE Transactions on Communications 60(9). p.2591-2601- Abstract
- We propose new M-algorithm BCJR (M-BCJR) algorithms for low-complexity turbo equalization and apply them to severe intersymbol interference (ISI) introduced by faster than Nyquist signaling. These reduced-search detectors are evaluated in simple detection over the ISI channel and in iterative decoding of coded FTN transmissions. In the second case, accurate log likelihood ratios are essential and we introduce a 3-recursion M-BCJR that provides this. Focusing signal energy by a minimum phase conversion before the M-BCJR is also essential; we propose an improvement to this older idea. The new M-BCJRs are compared to reduced-trellis VA and BCJR benchmarks. The FTN signals carry 4-8 bits/Hz-s in a fixed spectrum, with severe ISI models as long... (More)
- We propose new M-algorithm BCJR (M-BCJR) algorithms for low-complexity turbo equalization and apply them to severe intersymbol interference (ISI) introduced by faster than Nyquist signaling. These reduced-search detectors are evaluated in simple detection over the ISI channel and in iterative decoding of coded FTN transmissions. In the second case, accurate log likelihood ratios are essential and we introduce a 3-recursion M-BCJR that provides this. Focusing signal energy by a minimum phase conversion before the M-BCJR is also essential; we propose an improvement to this older idea. The new M-BCJRs are compared to reduced-trellis VA and BCJR benchmarks. The FTN signals carry 4-8 bits/Hz-s in a fixed spectrum, with severe ISI models as long as 32 taps. The combination of coded FTN and the reduced-complexity BCJR is an attractive narrowband coding method. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3184373
- author
- Prlja, Adnan LU and Anderson, John B LU
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Faster-than-Nyquist, turbo equalization, minimum phase, intersymbol, interference, BCJR, reduced complexity
- in
- IEEE Transactions on Communications
- volume
- 60
- issue
- 9
- pages
- 2591 - 2601
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- wos:000309204600024
- scopus:84866734279
- ISSN
- 0090-6778
- DOI
- 10.1109/TCOMM.2012.070912.110296
- language
- English
- LU publication?
- yes
- id
- 4c3134f5-1441-4aeb-81ee-8a5a990f1728 (old id 3184373)
- date added to LUP
- 2016-04-01 13:45:49
- date last changed
- 2022-05-19 21:00:27
@article{4c3134f5-1441-4aeb-81ee-8a5a990f1728, abstract = {{We propose new M-algorithm BCJR (M-BCJR) algorithms for low-complexity turbo equalization and apply them to severe intersymbol interference (ISI) introduced by faster than Nyquist signaling. These reduced-search detectors are evaluated in simple detection over the ISI channel and in iterative decoding of coded FTN transmissions. In the second case, accurate log likelihood ratios are essential and we introduce a 3-recursion M-BCJR that provides this. Focusing signal energy by a minimum phase conversion before the M-BCJR is also essential; we propose an improvement to this older idea. The new M-BCJRs are compared to reduced-trellis VA and BCJR benchmarks. The FTN signals carry 4-8 bits/Hz-s in a fixed spectrum, with severe ISI models as long as 32 taps. The combination of coded FTN and the reduced-complexity BCJR is an attractive narrowband coding method.}}, author = {{Prlja, Adnan and Anderson, John B}}, issn = {{0090-6778}}, keywords = {{Faster-than-Nyquist; turbo equalization; minimum phase; intersymbol; interference; BCJR; reduced complexity}}, language = {{eng}}, number = {{9}}, pages = {{2591--2601}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, series = {{IEEE Transactions on Communications}}, title = {{Reduced-Complexity Receivers for Strongly Narrowband Intersymbol Interference Introduced by Faster-than-Nyquist Signaling}}, url = {{http://dx.doi.org/10.1109/TCOMM.2012.070912.110296}}, doi = {{10.1109/TCOMM.2012.070912.110296}}, volume = {{60}}, year = {{2012}}, }