Analysis of Power Control for Indoor Optical Wireless Code-Division Multiple Access Networks Using on-Off Keying and Binary Pulse Position Modulation

Wireless infrared Optical Code-Division Multiple Access (W-OCDMA) is a new developing technique with many useful applications. Noting the limitation on power consumption and eye-safety requirements, wireless optical systems is power limited. Therefore control and efficient use of optical power is a key issue in analysis and design of these systems. Also, multi-user interference is the major source of impairment in these systems and power control is required to control and reduce this interference. Power control and the inevitable errors in its algorithms play an important role in design and implementation of these systems. In this paper, the authors study the uplink performance of W-OCDMA networks employing On-Off Keying (OOK) and Binary Pulse Position Modulation (BPPM) schemes without any power control algorithm.