Image Retrieval of Tourism Landscape in Rural Revitalization Based on Wireless Communication Network

Table 1

The main characteristics of the three wireless communication technologies.

Communication technology	Bluetooth	ZigBee	Wi-Fi
Frequency band	2.4 GHz	2.4 GHz	2.4 GHz
Transfer speed	24 Mb/s	250 kb/s	54 Mb/s
Transmission distance	10 m	10–100 m	100 m
Maximum transmission rate	0.72	0.25	54
Bit propagation time	1.39 µs	4 µs	0.0185 µs
Coding efficiency	94.41	76.52	97.18