A proposal of multi beam transmitter for non-directed diffuse indoor optical wireless communication system

For future high speed indoor wireless communication, a non-directed diffuse optical wireless communication system attracts a great attention. In this paper, in order to obtain enough received signal power for nondirected diffuse optical wireless communication system, a multi beam transmitter system is proposed and the performance improvement achieved by proposed system is evaluated. Numerical results show that high received signal power can be obtained by using the multi beam transmitter and the performance of proposed system is much better than that of conventional non-directed diffuse system. Moreover, we evaluate the effect of delay spread to the performance of proposed system and it is confirmed that the great performance improvement is achieved by suppressing the delay spread.