Performance comparison of feasible MMSE-PIC algorithms with channel estimation for HSUPA

Ilkka Moilanen, Paavo Hahtola

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2 Citations (Scopus)

Abstract

In this paper, we study the speech user performance of selected parallel interference cancellation (PIC) algorithms in a single-cell high speed uplink packet access (HSUPA) system. To combat intersymbol interference (ISI), single-user chip-level minimum mean-squared error (MMSE) equalizer is used to detect the data users. PIC is applied to suppress the interference from data users to speech users, and RAKE to detect the speech users. As an input to the PIC stage, we may use the hard or soft symbol decisions (HD, SD) from the data users' demodulator or decoder outputs. The latter requires re-encoding of the decoded symbols. This adds to complexity, but increases also the reliability of the interference estimates. Results and analysis are provided for both ideal and MMSE channel estimation (CE). We show that the combination of PIC and RAKE outperforms the simple MMSE equalization in all studied cases. Using re-encoded soft symbol decisions for interference estimate calculation always leads to the best performance. However, in some scenarios the performance loss due to using the soft symbol decisions from the demodulator output is almost negligible. (9 refs.)
Original languageEnglish
Title of host publicationProceedings
Subtitle of host publicationIEEE Wireless Communications and Networking Conference, WCNC 2009
Place of PublicationPiscataway, NJ, USA
PublisherInstitute of Electrical and Electronic Engineers IEEE
Number of pages5
ISBN (Print)978-1-4244-2947-9, 978-1-4244-2948-6
DOIs
Publication statusPublished - 2009
MoE publication typeA4 Article in a conference publication
EventIEEE Wireless Communications and Networking Conference, WCNC 2009 - Budapest, Hungary
Duration: 5 Apr 20098 Apr 2009

Conference

ConferenceIEEE Wireless Communications and Networking Conference, WCNC 2009
Abbreviated titleWCNC 2009
CountryHungary
CityBudapest
Period5/04/098/04/09

Fingerprint

Channel estimation
Demodulators
Intersymbol interference
Equalizers

Cite this

Moilanen, I., & Hahtola, P. (2009). Performance comparison of feasible MMSE-PIC algorithms with channel estimation for HSUPA. In Proceedings: IEEE Wireless Communications and Networking Conference, WCNC 2009 Piscataway, NJ, USA: Institute of Electrical and Electronic Engineers IEEE. https://doi.org/10.1109/WCNC.2009.4917893
Moilanen, Ilkka ; Hahtola, Paavo. / Performance comparison of feasible MMSE-PIC algorithms with channel estimation for HSUPA. Proceedings: IEEE Wireless Communications and Networking Conference, WCNC 2009. Piscataway, NJ, USA : Institute of Electrical and Electronic Engineers IEEE, 2009.
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Moilanen, I & Hahtola, P 2009, Performance comparison of feasible MMSE-PIC algorithms with channel estimation for HSUPA. in Proceedings: IEEE Wireless Communications and Networking Conference, WCNC 2009. Institute of Electrical and Electronic Engineers IEEE, Piscataway, NJ, USA, IEEE Wireless Communications and Networking Conference, WCNC 2009, Budapest, Hungary, 5/04/09. https://doi.org/10.1109/WCNC.2009.4917893

Performance comparison of feasible MMSE-PIC algorithms with channel estimation for HSUPA. / Moilanen, Ilkka; Hahtola, Paavo.

Proceedings: IEEE Wireless Communications and Networking Conference, WCNC 2009. Piscataway, NJ, USA : Institute of Electrical and Electronic Engineers IEEE, 2009.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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Moilanen I, Hahtola P. Performance comparison of feasible MMSE-PIC algorithms with channel estimation for HSUPA. In Proceedings: IEEE Wireless Communications and Networking Conference, WCNC 2009. Piscataway, NJ, USA: Institute of Electrical and Electronic Engineers IEEE. 2009 https://doi.org/10.1109/WCNC.2009.4917893