Inthispaper,ablindequalizationschemebasedontheconstantnormalgorithm(CNA)isproposedforasymmetricallyclippedopticalorthogonalfrequencydivisionmultiplexing(ACO-OFDM)invisiblelightcommunication(VLC)system.Atthereceiver,theCNAcanbeusedtoimprovesystemspectralefficiencyduetothefreeof trainingsymbols.ThesimulationresultsindicatethatforACO-OFDMsignal,theCNA-basedblindequalization schemeachievesbettermeansquareerror(MSE)performancethanthatofconstantmodealgorithm(CMA)。 此外,在VLC系统中,在相同数据速率下,基于CNA的盲验证方案在比特误码率