The BER performance comparison of MSK and GMSK schemes for short-range visible light communication

In this paper, minimum shift keying (MSK) scheme and Gaussian minimum shift keying (GMSK) scheme used in Short-Range visible light communication(VLC) is presented. The light-emitting diode (LED) model in short-range VLC is introduced, the bit error rate (BER) performance of MSK is compared with GMSK by Monte Carlo simulations and experiments. The results are shown and MSK has the better BER performance than GMSK is verified.

I. Introduction

In recent years, with the rapid development of LED, VLC is also concerned by more and more people. For illumination, LED has the advantages of high brightness, small size, green, low power consumption and long life. For communication, VLC has the advantages of high bandwidth, high transmission rate, no electromagnetic radiation, high security and do not occupy the radio frequency spectrum and so on. In addition to the advantages mentioned, LED also has the characteristics of nonlinear modulation that caused by U-I nonlinearity [1]. In VLC, the signal after LED would be clipped due to the LED has different voltage to current conversion value.