In order to use white LED as a lighting source and communication part, new modulation schemes such as reverse on-off keying with return-to-zero signal modulation (ROOK-RZ), reverse pulse position modulation (RPPM), reverse differential pulse position modulation (RDPPM), and reverse digital pulse interval modulation (RDPIM) are proposed for indoor visible light communications. Based on the given symbol structure, bandwidth requirement and average transmission power are analyzed and compared with on-off keying(OOK). Meanwhile, slot error rate is derived, and compared with each other. Simulation results show that OOK has the minimum bandwidth, while RPPM has the highest average transmission power and best slot error rate performance, but the maximum bandwidth.