IEEE Signal Processing Letters

In many signal processing applications, it is beneficial to use polynomial-based interpolation filters. Actual implementations of these filters can be performed effectively by using the Farrow structure or its modifications. In the literature only polynomial-based filters having even number of polynomial pieces N have been considered. This letter presents a modification of the implementation form...

article

Space-time trellis codes with linear transformation for fast fading channels

Yonghui Li, B. Vucetic, Yang Tang, Qishan Zhang

IEEE Signal Processing Letters > 2004 > 11 > 11 > 895 - 898

A space-time trellis code with linear transformation (STTC-LT) is presented. The upper bound on the pairwise error probability (PEP) is derived and a new design criterion is proposed. It is shown that the performance of STTC-LT over fast Rayleigh fading channels depends on the weighted square product distance (WSPD). Simulation results are provided for QPSK signal sets. They show that the proposed...

article

List of Reviewers

IEEE Signal Processing Letters > 2004 > 11 > 12 > 960 - 966

article

Image denoising using bivariate α-stable distributions in the complex wavelet domain

A. Achim, E.E. Kuruoglu

IEEE Signal Processing Letters > 2005 > 12 > 1 > 17 - 20

Recently, the dual-tree complex wavelet transform has been proposed as an analysis tool featuring near shift-invariance and improved directional selectivity compared to the standard wavelet transform. Within this framework, we describe a novel technique for removing noise from digital images. We design a bivariate maximum a posteriori estimator, which relies on the family of isotropic α-stable distributions...

article

List of Reviewers

IEEE Signal Processing Letters > 2005 > 12 > 12 > 876 - 883

article

An efficient detail-preserving approach for removing impulse noise in images

W. Luo

IEEE Signal Processing Letters > 2006 > 13 > 7 > 413 - 416

In this letter, we present a new efficient algorithm for the removal of impulse noise from corrupted images while preserving image details. The algorithm is based on the alpha-trimmed mean, which is a special case of the order-statistics filter. However, unlike some of the previous techniques involving order-statistics filters, the proposed method uses the alpha-trimmed mean only in impulse noise...

article

Improved information outage rate in certain MIMO systems

D.M. Rankin, D.P. Taylor, P.A. Martin

IEEE Signal Processing Letters > 2006 > 13 > 7 > 393 - 396

We propose a simple class of encoding/decoding techniques that can be used to improve the information outage rate of certain multiple-input-multiple-output (MIMO) systems. Gains in outage rate can be achieved at low to moderate signal-to-noise ratios in MIMO systems that have fewer receive antennas than transmit antennas. This performance improvement is due to extra "virtual" receive antennas...

article

New multimodulus blind equalization algorithm with relaxation

S. Abrar, S.I. Shah

IEEE Signal Processing Letters > 2006 > 13 > 7 > 425 - 428

A new multimodulus algorithm is presented for blind equalization of complex-valued communication channels. The proposed algorithm is obtained by solving a novel deterministic optimization criterion that constituted the dispersion minimization of a priori as well as a posteriori quantities, leading to an update equation having a particular zero-memory continuous nonlinearity. Analyses of automatic...

article

Amplitude modulated sinusoidal signal decomposition for audio coding

M.G. Christensen, A. Jakobsson, S.V. Andersen, S.H. Jensen

IEEE Signal Processing Letters > 2006 > 13 > 7 > 389 - 392

In this letter, we present a decomposition for sinusoidal coding of audio, based on an amplitude modulation of sinusoids via a linear combination of arbitrary basis vectors. The proposed method, which incorporates a perceptual distortion measure, is based on a relaxation of a nonlinear least-squares minimization. Rate-distortion curves and listening tests show that, compared to a constant-amplitude...

article

Three-directional box-splines: characterization and efficient evaluation

L. Condat, D. Van De Ville

IEEE Signal Processing Letters > 2006 > 13 > 7 > 417 - 420

We propose a new characterization of three-directional box-splines, which are well adapted for interpolation and approximation on hexagonal lattices. Inspired by a construction already applied with success for exponential splines and hex-splines, we characterize a box-spline as a convolution of a generating function, which is a Green function of the spline's associated differential operator, and a...

article

Neural network-aided adaptive unscented Kalman filter for nonlinear state estimation

Ronghui Zhan, J. Wan

IEEE Signal Processing Letters > 2006 > 13 > 7 > 445 - 448

The extended Kalman filter (EKF) is well known as a state estimation method for a nonlinear system and has been used to train a multilayered neural network (MNN) by augmenting the state with unknown connecting weights. However, EKF has the inherent drawbacks such as instability due to linearization and costly calculation of Jacobian matrices, and its performance degrades greatly, especially when the...

article

Mate/spl acute/rn B-splines and the optimal reconstruction of signals

S. Ramani, M. Unser

IEEE Signal Processing Letters > 2006 > 13 > 7 > 437 - 440

Starting from the power spectral density of Mateacutern stochastic processes, we introduce a new family of splines that is defined in terms of the whitening operator of such processes. We show that these Mateacutern splines admit a stable representation in a B-spline-like basis. We specify the Mateacutern B-splines (causal and symmetric) and identify their key properties; in particular, we prove that...

article

A novel algorithm for the adaptation of the pole of Laguerre filters

C. Boukis, D.P. Mandic, A.G. Constantinides, L.C. Polymenakos

IEEE Signal Processing Letters > 2006 > 13 > 7 > 429 - 432

This letter proposes a novel stochastic gradient algorithm for the online adaptation of the pole position in Laguerre filters. The proposed algorithm exploits the inherent relationship between the values of the filter coefficients and the value of the Laguerre pole. This leads to an unbiased solution and, hence, a more accurate estimate of the error gradient. Simulations in a system identification...

article

Morphological diversity and source separation

J. Bobin, Y. Moudden, J.-L. Starck, M. Elad

IEEE Signal Processing Letters > 2006 > 13 > 7 > 409 - 412

This letter describes a new method for blind source separation, adapted to the case of sources having different morphologies. We show that such morphological diversity leads to a new and very efficient separation method, even in the presence of noise. The algorithm, coined multichannel morphological component analysis (MMCA), is an extension of the morphological component analysis (MCA) method. The...

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FreeMarker template error (HTML_DEBUG mode; use RETHROW in production!)


Java method "org.springframework.web.servlet.support.RequestContext.getMessage(String)" threw an exception when invoked on org.springframework.web.servlet.support.RequestContext object "org.springframework.web.servlet.support.RequestContext@56036958"; see cause exception in the Java stack trace.

----
FTL stack trace ("~" means nesting-related):
	- Failed at: ${springMacroRequestContext.getMessag...  [in template "META-INF/freemarker-templates/spring.ftl" in macro "message" at line 28, column 22]
	- Reached through: @spring.message "portal.searchResult...  [in template "META-INF/freemarker-templates/portal/search/facets.ftl" at line 149, column 33]
----

Java stack trace (for programmers):
----
freemarker.core._TemplateModelException: [... Exception message was already printed; see it above ...]
	at freemarker.ext.beans._MethodUtil.newInvocationTemplateModelException(_MethodUtil.java:289)
	at freemarker.ext.beans._MethodUtil.newInvocationTemplateModelException(_MethodUtil.java:261)
	at freemarker.ext.beans.OverloadedMethodsModel.exec(OverloadedMethodsModel.java:65)
	at freemarker.core.MethodCall._eval(MethodCall.java:65)
	at freemarker.core.Expression.eval(Expression.java:81)
	at freemarker.core.DollarVariable.calculateInterpolatedStringOrMarkup(DollarVariable.java:96)
	at freemarker.core.DollarVariable.accept(DollarVariable.java:59)
	at freemarker.core.Environment.visit(Environment.java:363)
	at freemarker.core.Environment.invoke(Environment.java:715)
	at freemarker.core.UnifiedCall.accept(UnifiedCall.java:83)
	at freemarker.core.Environment.visit(Environment.java:327)
	at freemarker.core.Environment.visit(Environment.java:333)
	at freemarker.core.Environment.visit(Environment.java:369)
	at freemarker.core.IteratorBlock$IterationContext.executedNestedContentForCollOrSeqListing(IteratorBlock.java:316)
	at freemarker.core.IteratorBlock$IterationContext.executeNestedContent(IteratorBlock.java:272)
	at freemarker.core.IteratorBlock$IterationContext.accept(IteratorBlock.java:243)
	at freemarker.core.Environment.visitIteratorBlock(Environment.java:596)
	at freemarker.core.IteratorBlock.acceptWithResult(IteratorBlock.java:108)
	at freemarker.core.IteratorBlock.accept(IteratorBlock.java:94)
	at freemarker.core.Environment.visit(Environment.java:327)
	at freemarker.core.Environment.visit(Environment.java:333)
	at freemarker.core.Environment.visit(Environment.java:333)
	at freemarker.core.Environment.visit(Environment.java:333)
	at freemarker.core.Environment.process(Environment.java:306)
	at freemarker.ext.servlet.FreemarkerServlet.processEnvironment(FreemarkerServlet.java:910)
	at freemarker.ext.servlet.FreemarkerServlet.process(FreemarkerServlet.java:879)
	at freemarker.ext.servlet.FreemarkerServlet.doGet(FreemarkerServlet.java:764)
	at org.apache.tiles.request.freemarker.render.FreemarkerRenderer.render(FreemarkerRenderer.java:73)
	at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:259)
	at org.apache.tiles.template.InsertAttributeModel.renderAttribute(InsertAttributeModel.java:188)
	at org.apache.tiles.template.InsertAttributeModel.execute(InsertAttributeModel.java:132)
	at org.apache.tiles.jsp.taglib.InsertAttributeTag.doTag(InsertAttributeTag.java:299)
	at freemarker.ext.jsp.SimpleTagDirectiveModel.execute(SimpleTagDirectiveModel.java:92)
	at freemarker.core.Environment.visit(Environment.java:427)
	at freemarker.core.UnifiedCall.accept(UnifiedCall.java:101)
	at freemarker.core.Environment.visit(Environment.java:327)
	at freemarker.core.Environment.visit(Environment.java:333)
	at freemarker.core.Environment.process(Environment.java:306)
	at freemarker.ext.servlet.FreemarkerServlet.processEnvironment(FreemarkerServlet.java:910)
	at freemarker.ext.servlet.FreemarkerServlet.process(FreemarkerServlet.java:879)
	at freemarker.ext.servlet.FreemarkerServlet.doGet(FreemarkerServlet.java:764)
	at org.apache.tiles.request.freemarker.render.FreemarkerRenderer.render(FreemarkerRenderer.java:73)
	at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:259)
	at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:397)
	at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:238)
	at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:221)
	at org.apache.tiles.renderer.DefinitionRenderer.render(DefinitionRenderer.java:59)
	at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:259)
	at org.apache.tiles.template.InsertAttributeModel.renderAttribute(InsertAttributeModel.java:188)
	at org.apache.tiles.template.InsertAttributeModel.execute(InsertAttributeModel.java:132)
	at org.apache.tiles.jsp.taglib.InsertAttributeTag.doTag(InsertAttributeTag.java:299)
	at freemarker.ext.jsp.SimpleTagDirectiveModel.execute(SimpleTagDirectiveModel.java:92)
	at freemarker.core.Environment.visit(Environment.java:427)
	at freemarker.core.UnifiedCall.accept(UnifiedCall.java:101)
	at freemarker.core.Environment.visit(Environment.java:327)
	at freemarker.core.Environment.visit(Environment.java:333)
	at freemarker.core.Environment.process(Environment.java:306)
	at freemarker.ext.servlet.FreemarkerServlet.processEnvironment(FreemarkerServlet.java:910)
	at freemarker.ext.servlet.FreemarkerServlet.process(FreemarkerServlet.java:879)
	at freemarker.ext.servlet.FreemarkerServlet.doGet(FreemarkerServlet.java:764)
	at org.apache.tiles.request.freemarker.render.FreemarkerRenderer.render(FreemarkerRenderer.java:73)
	at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:259)
	at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:397)
	at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:238)
	at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:221)
	at org.apache.tiles.renderer.DefinitionRenderer.render(DefinitionRenderer.java:59)
	at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:259)
	at org.apache.tiles.template.InsertAttributeModel.renderAttribute(InsertAttributeModel.java:188)
	at org.apache.tiles.template.InsertAttributeModel.execute(InsertAttributeModel.java:132)
	at org.apache.tiles.jsp.taglib.InsertAttributeTag.doTag(InsertAttributeTag.java:299)
	at freemarker.ext.jsp.SimpleTagDirectiveModel.execute(SimpleTagDirectiveModel.java:92)
	at freemarker.core.Environment.visit(Environment.java:427)
	at freemarker.core.UnifiedCall.accept(UnifiedCall.java:101)
	at freemarker.core.Environment.visit(Environment.java:327)
	at freemarker.core.Environment.visit(Environment.java:333)
	at freemarker.core.Environment.process(Environment.java:306)
	at freemarker.ext.servlet.FreemarkerServlet.processEnvironment(FreemarkerServlet.java:910)
	at freemarker.ext.servlet.FreemarkerServlet.process(FreemarkerServlet.java:879)
	at freemarker.ext.servlet.FreemarkerServlet.doGet(FreemarkerServlet.java:764)
	at org.apache.tiles.request.freemarker.render.FreemarkerRenderer.render(FreemarkerRenderer.java:73)
	at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:259)
	at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:397)
	at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:238)
	at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:221)
	at org.apache.tiles.renderer.DefinitionRenderer.render(DefinitionRenderer.java:59)
	at org.springframework.web.servlet.view.tiles3.TilesView.renderMergedOutputModel(TilesView.java:132)
	at pl.edu.icm.synat.common.ui.tiles.FreeMarkerAndTilesView.renderMergedOutputModel(FreeMarkerAndTilesView.java:148)
	at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303)
	at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1243)
	at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1027)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:971)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:965)
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:856)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:841)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:316)
	at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126)
	at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:114)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:122)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:149)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:168)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:48)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:207)
	at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:184)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:205)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.jasig.cas.client.session.SingleSignOutFilter.doFilter(SingleSignOutFilter.java:100)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:205)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:120)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:120)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:64)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:53)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:133)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:91)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.springframework.security.web.access.channel.ChannelProcessingFilter.doFilter(ChannelProcessingFilter.java:152)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.springframework.security.saml.metadata.MetadataGeneratorFilter.doFilter(MetadataGeneratorFilter.java:87)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at pl.edu.icm.synat.portal.web.security.PortalLocaleFilter.doFilterInternal(PortalLocaleFilter.java:51)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:213)
	at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:176)
	at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)
	at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at ch.qos.logback.classic.helpers.MDCInsertingServletFilter.doFilter(MDCInsertingServletFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at pl.edu.icm.synat.portal.web.security.RemoteIpFilter.doFilter(RemoteIpFilter.java:75)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:219)
	at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:196)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
	at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:190)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.context.NoSuchMessageException: No message found under code 'portal.searchResult.facet.^journalYear^journalVolume^journalNumber' for locale 'en'.
	at org.springframework.context.support.AbstractMessageSource.getMessage(AbstractMessageSource.java:159)
	at org.springframework.context.support.DelegatingMessageSource.getMessage(DelegatingMessageSource.java:66)
	at org.springframework.context.support.AbstractApplicationContext.getMessage(AbstractApplicationContext.java:1129)
	at org.springframework.web.servlet.support.RequestContext.getMessage(RequestContext.java:712)
	at org.springframework.web.servlet.support.RequestContext.getMessage(RequestContext.java:678)
	at sun.reflect.GeneratedMethodAccessor237.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at freemarker.ext.beans.BeansWrapper.invokeMethod(BeansWrapper.java:1458)
	at freemarker.ext.beans.ReflectionCallableMemberDescriptor.invokeMethod(ReflectionCallableMemberDescriptor.java:56)
	at freemarker.ext.beans.MemberAndArguments.invokeMethod(MemberAndArguments.java:51)
	at freemarker.ext.beans.OverloadedMethodsModel.exec(OverloadedMethodsModel.java:61)
	... 179 more

Financed by the National Centre for Research and Development under grant No. SP/I/1/77065/10 by the strategic scientific research and experimental development program: SYNAT - “Interdisciplinary System for Interactive Scientific and Scientific-Technical Information”.

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IEEE Signal Processing Letters

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