The emergence of portable terminals is expected to accelerate the introduction of wireless Local Area Networks (LANs). Portable devices require low power consumption, small size and weight. The demand for inexpensive, high-speed links satisfying these requirements has motivated the research on infrared (IR) wireless communications. Indoor wireless optical links can be implemented in different configurations~1. High data rates IR systems with directed line-of-sight (LOS) configurations have been reported~(2-4). Directed LOS, however, is not suitable for portable terminals, alignment is crucial and full mobility cannot be achieved. Aproper choice for portable communications is a non-directed configuration non-LOS, often refereed to as a diffuse configuration.
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