Improved Iterative Parallel Interference Cancellation Receiver for Future Wireless DS-CDMA Systems
We present a new turbo multiuser detector for turbo-coded direct sequence code division multiple access (DS-CDMA) systems. The proposed detector is based on the utilization of a parallel interference cancellation (PIC) and a bank of turbo decoders. The PIC is broken up in order to perform interferen...
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2005-04-01
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Series: | EURASIP Journal on Advances in Signal Processing |
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Online Access: | http://dx.doi.org/10.1155/ASP.2005.626 |
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doaj-3038bc863934420e8cc38a3bfe136be22020-11-25T00:54:33ZengSpringerOpenEURASIP Journal on Advances in Signal Processing1687-61721687-61802005-04-012005562663410.1155/ASP.2005.626Improved Iterative Parallel Interference Cancellation Receiver for Future Wireless DS-CDMA SystemsAndrea BernacchioniRomano FantacciSimone MorosiWe present a new turbo multiuser detector for turbo-coded direct sequence code division multiple access (DS-CDMA) systems. The proposed detector is based on the utilization of a parallel interference cancellation (PIC) and a bank of turbo decoders. The PIC is broken up in order to perform interference cancellation after each constituent decoder of the turbo decoding scheme. Moreover, in the paper we propose a new enhanced algorithm that provides a more accurate estimation of the signal-to-noise-plus-interference-ratio used in the tentative decision device and in the MAP decoding algorithm. The performance of the proposed receiver is evaluated by means of computer simulations for medium to very high system loads, in AWGN and multipath fading channel, and compared to recently proposed interference cancellation-based iterative MUD, by taking into account the number of iterations and the complexity involved. We will see that the proposed receiver outperforms the others especially for highly loaded systems.http://dx.doi.org/10.1155/ASP.2005.626code division multiple accessparallel interference cancellationturbo multiuser detectioniterative detection and decodingnonlinear MMSE soft decision. |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Andrea Bernacchioni Romano Fantacci Simone Morosi |
spellingShingle |
Andrea Bernacchioni Romano Fantacci Simone Morosi Improved Iterative Parallel Interference Cancellation Receiver for Future Wireless DS-CDMA Systems EURASIP Journal on Advances in Signal Processing code division multiple access parallel interference cancellation turbo multiuser detection iterative detection and decoding nonlinear MMSE soft decision. |
author_facet |
Andrea Bernacchioni Romano Fantacci Simone Morosi |
author_sort |
Andrea Bernacchioni |
title |
Improved Iterative Parallel Interference Cancellation Receiver for Future Wireless DS-CDMA Systems |
title_short |
Improved Iterative Parallel Interference Cancellation Receiver for Future Wireless DS-CDMA Systems |
title_full |
Improved Iterative Parallel Interference Cancellation Receiver for Future Wireless DS-CDMA Systems |
title_fullStr |
Improved Iterative Parallel Interference Cancellation Receiver for Future Wireless DS-CDMA Systems |
title_full_unstemmed |
Improved Iterative Parallel Interference Cancellation Receiver for Future Wireless DS-CDMA Systems |
title_sort |
improved iterative parallel interference cancellation receiver for future wireless ds-cdma systems |
publisher |
SpringerOpen |
series |
EURASIP Journal on Advances in Signal Processing |
issn |
1687-6172 1687-6180 |
publishDate |
2005-04-01 |
description |
We present a new turbo multiuser detector for turbo-coded direct sequence code division multiple access (DS-CDMA) systems. The proposed detector is based on the utilization of a parallel interference cancellation (PIC) and a bank of turbo decoders. The PIC is broken up in order to perform interference cancellation after each constituent decoder of the turbo decoding scheme. Moreover, in the paper we propose a new enhanced algorithm that provides a more accurate estimation of the signal-to-noise-plus-interference-ratio used in the tentative decision device and in the MAP decoding algorithm. The performance of the proposed receiver is evaluated by means of computer simulations for medium to very high system loads, in AWGN and multipath fading channel, and compared to recently proposed interference cancellation-based iterative MUD, by taking into account the number of iterations and the complexity involved. We will see that the proposed receiver outperforms the others especially for highly loaded systems. |
topic |
code division multiple access parallel interference cancellation turbo multiuser detection iterative detection and decoding nonlinear MMSE soft decision. |
url |
http://dx.doi.org/10.1155/ASP.2005.626 |
work_keys_str_mv |
AT andreabernacchioni improvediterativeparallelinterferencecancellationreceiverforfuturewirelessdscdmasystems AT romanofantacci improvediterativeparallelinterferencecancellationreceiverforfuturewirelessdscdmasystems AT simonemorosi improvediterativeparallelinterferencecancellationreceiverforfuturewirelessdscdmasystems |
_version_ |
1725233708004278272 |