DS

Introduction There has been tremendous growth in the field of wireless communication during the last decade. The wide acceptance of 802.11 standards for wireless local area network (WLAN) and cellular phone networks have proved that low cost wireless solutions are feasible and acceptable. There are many applications that require low cost, low data rate, low power and inexpensive solution to network within a small area thus requiring a low rate wireless personal area network (LR- WPAN).  There are many proprietary solutions that address these needs, but they are expensive and incompatible between manufacturers. The IEEE 802.15.4 is a new standard for LR-WPAN providing a low cost and less complicated solution. The expected applications are home/office automation, industrial sensors and control, distributed sensor networks and environment monitoring. The ZigBee networking standard has slowly but surely taken up an important share of the wireless market. Vendors of ZigBee products are ...