Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jen, Chih-Wei | en_US |
dc.contributor.author | Jou, Shyh-Jye | en_US |
dc.date.accessioned | 2015-07-21T11:20:48Z | - |
dc.date.available | 2015-07-21T11:20:48Z | - |
dc.date.issued | 2014-10-08 | en_US |
dc.identifier.issn | 1687-6180 | en_US |
dc.identifier.uri | http://dx.doi.org/10.1186/1687-6180-2014-151 | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/124285 | - |
dc.description.abstract | The multicarrier code division multiple access (MC-CDMA) technique has received considerable interest for its potential application to future wireless communication systems due to its high data rate. A common problem regarding the blind multiuser detectors used in MC-CDMA systems is that they are extremely sensitive to the complex channel environment. Besides, the perturbation of colored noise may negatively affect the performance of the system. In this paper, a new coherent detection method will be proposed, which utilizes the modified fast independent component analysis (FastICA) algorithm, based on approximate negentropy maximization that is subject to the second-order cone programming (SOCP) constraint. The aim of the proposed coherent detection is to provide robustness against small-to-medium channel estimation mismatch (CEM) that may arise from channel frequency response estimation error in the MC-CDMA system, which is modulated by downlink binary phase-shift keying (BPSK) under colored noise. Noncoherent demodulation schemes are preferable to coherent demodulation schemes, as the latter are difficult to implement over time-varying fading channels. Differential phase-shift keying (DPSK) is therefore the natural choice for an alternative modulation scheme. Furthermore, the new blind differential SOCP-based ICA (SOCP-ICA) detection without channel estimation and compensation will be proposed to combat Doppler spread caused by time-varying fading channels in the DPSK-modulated MC-CDMA system under colored noise. In this paper, numerical simulations are used to illustrate the robustness of the proposed blind coherent SOCP-ICA detector against small-to-medium CEM and to emphasize the advantage of the blind differential SOCP-ICA detector in overcoming Doppler spread. | en_US |
dc.language.iso | en_US | en_US |
dc.subject | Multicarrier code division multiple access (MC-CDMA) | en_US |
dc.subject | Second-order cone programming (SOCP) | en_US |
dc.subject | Independent component analysis (ICA) | en_US |
dc.subject | Negentropy | en_US |
dc.title | Blind ICA detection based on second-order cone programming for MC-CDMA systems | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1186/1687-6180-2014-151 | en_US |
dc.identifier.journal | EURASIP JOURNAL ON ADVANCES IN SIGNAL PROCESSING | en_US |
dc.contributor.department | 電子工程學系及電子研究所 | zh_TW |
dc.contributor.department | Department of Electronics Engineering and Institute of Electronics | en_US |
dc.identifier.wosnumber | WOS:000347993500002 | en_US |
dc.citation.woscount | 0 | en_US |
Appears in Collections: | Articles |
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