Experimental Investigation of Propagation Characteristics and Performance of 2.4-GHz ISM-Band Wireless LAN in Various Indoor Environments
Yuji Maeda, Kazuhiro Takaya, Nobuo Kuwabara · 1999
ss and within 10 ns for the delay spread. (2) Reflections from the walls caused a serious interference problem: throughput was 0.0 at more than 30% of the positions along the center line of the booth when the walls were constructed of high-reflection-coefficient material. (3) The throughput and BER were closely correlated with the delay spread; the number of positions meeting a certain throughput was estimated by the method based on the delay spread calculated using the ray tracing method. It was within 10% of the number measured. The results obtained can be used to design ideal indoor environments for 2.4-GHz ISM-band LAN systems. key words: propagation characteristic, delay spread, indoor environment, multipath, 2.4-GHz ISM-band wireless LAN, throughput, BER 1. Introduction Several kinds of wireless communication systems, such as wireless local area networks (LANs) and cordless phones, are now used in many offices. However, if the system is large an