In order to improve the data transmission rate of Visible Light Communication（VLC）system

two kinds of VLC schemes based on space modulation technology are designed and implemented.The transmit end uses Space-Shift Keying（SSK）combined with Pulse Position Modulation（PPM）and Pulse Width Modulation（PWM）respectively to form two complex modulation schemes and transfer data

namely Space Pulse Position Modulation（SPPM）and Space Pulse Width Modulation（SPWM）.As the composite modulation makes full use of space and signal two-dimensional resources

the system band utilization is effectively improved.The current feedback circuit and the voltage amplifier circuit are adopted to improve the dynamic range of the peak level of the receiving level

and the optical pulse is demodulated by the single-chip computer C8051.Based on the hardware and software platform developed in this paper

a four-transmit and one-receive experimental system is obtained.The performance and effectiveness of the system are also tested and verified.