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- Publisher Website: 10.1109/DSPWS.2006.265457
- Scopus: eid_2-s2.0-39049115662
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Conference Paper: A turbo receiver for wireless MC-CDMA communications using MAP-EM demodulator with LDPC codes under narrowband interference
Title | A turbo receiver for wireless MC-CDMA communications using MAP-EM demodulator with LDPC codes under narrowband interference |
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Authors | |
Keywords | LDPC code MC-CDMA Narrowband interference |
Issue Date | 2006 |
Citation | 2006 Ieee 12Th Digital Signal Processing Workshop And 4Th Ieee Signal Processing Education Workshop, 2006, p. 94-98 How to Cite? |
Abstract | This paper presents a turbo receiver for wireless multicarrier code division multiple access (MC-CDMA) communication systems using maximum a posteriori expectation-maximization (MAP-EM) demodulator with a son low-density parity-check (LDPC) decoder with pilotaided robust channel tracking and multiuser detection under time-varying narrowband interference (NBI). It was found that the conventional least-squares (LS) channel estimators and multiuser detectors will be significantly degraded when some sub-carrier are contaminated by narrowband interfering signals. A new weighted least M-estimate (WLM) multiuser detector, which is based on the Mestimation and weighted least square (WLS) concept, is proposed to jointly suppress the multiple access interference (MAI) and time-varying NBI. To reliably estimate the channel in NBI, a weighted recursive least Mestimate (WRLM) channel estimator is also employed to estimate the time-varying frequency-selective fading channels. Simulation results show that the proposed WLM multiuser detector significantly outperforms over the conventional linear decorrelator under NBI. © 2006 IEEE. |
Persistent Identifier | http://hdl.handle.net/10722/99703 |
References |
DC Field | Value | Language |
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dc.contributor.author | Law, TM | en_HK |
dc.contributor.author | Chan, SC | en_HK |
dc.contributor.author | Zhang, ZG | en_HK |
dc.date.accessioned | 2010-09-25T18:40:57Z | - |
dc.date.available | 2010-09-25T18:40:57Z | - |
dc.date.issued | 2006 | en_HK |
dc.identifier.citation | 2006 Ieee 12Th Digital Signal Processing Workshop And 4Th Ieee Signal Processing Education Workshop, 2006, p. 94-98 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/99703 | - |
dc.description.abstract | This paper presents a turbo receiver for wireless multicarrier code division multiple access (MC-CDMA) communication systems using maximum a posteriori expectation-maximization (MAP-EM) demodulator with a son low-density parity-check (LDPC) decoder with pilotaided robust channel tracking and multiuser detection under time-varying narrowband interference (NBI). It was found that the conventional least-squares (LS) channel estimators and multiuser detectors will be significantly degraded when some sub-carrier are contaminated by narrowband interfering signals. A new weighted least M-estimate (WLM) multiuser detector, which is based on the Mestimation and weighted least square (WLS) concept, is proposed to jointly suppress the multiple access interference (MAI) and time-varying NBI. To reliably estimate the channel in NBI, a weighted recursive least Mestimate (WRLM) channel estimator is also employed to estimate the time-varying frequency-selective fading channels. Simulation results show that the proposed WLM multiuser detector significantly outperforms over the conventional linear decorrelator under NBI. © 2006 IEEE. | en_HK |
dc.language | eng | en_HK |
dc.relation.ispartof | 2006 IEEE 12th Digital Signal Processing Workshop and 4th IEEE Signal Processing Education Workshop | en_HK |
dc.subject | LDPC code | en_HK |
dc.subject | MC-CDMA | en_HK |
dc.subject | Narrowband interference | en_HK |
dc.title | A turbo receiver for wireless MC-CDMA communications using MAP-EM demodulator with LDPC codes under narrowband interference | en_HK |
dc.type | Conference_Paper | en_HK |
dc.identifier.email | Chan, SC:scchan@eee.hku.hk | en_HK |
dc.identifier.email | Zhang, ZG:zgzhang@eee.hku.hk | en_HK |
dc.identifier.authority | Chan, SC=rp00094 | en_HK |
dc.identifier.authority | Zhang, ZG=rp01565 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1109/DSPWS.2006.265457 | en_HK |
dc.identifier.scopus | eid_2-s2.0-39049115662 | en_HK |
dc.identifier.hkuros | 140430 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-39049115662&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.spage | 94 | en_HK |
dc.identifier.epage | 98 | en_HK |
dc.identifier.scopusauthorid | Law, TM=36951818500 | en_HK |
dc.identifier.scopusauthorid | Chan, SC=13310287100 | en_HK |
dc.identifier.scopusauthorid | Zhang, ZG=8597618700 | en_HK |