"无线局域网原理、产品及覆盖方式详解"

Wireless Local Area Network (WLAN) is an extension of fixed Local Area Networks (LANs), providing users with a transparent and seamless wireless experience similar to that of wired networks. The basic principles of WLAN involve the air interface, wireless LAN cards, and access points, all working together to establish a wireless network connection. In comparison to LANs, WLANs have a few key differences. Power is directly correlated with range, while LANs are powered through wired connections. WLANs require batteries for devices to operate wirelessly. Additionally, frequency affects speed in WLANs, with different standards offering various speeds and frequencies. For example, 802.11b operates at 11 Mbps with a frequency of 2.4 GHz and uses DSSS technology, while 802.11a operates at 54 Mbps with a frequency of 5 GHz and uses OFDM technology. Similarly, 802.11g offers 54 Mbps speed with a 2.4 GHz frequency and OFDM technology. The technical standards of WLANs include a frequency range of 2.4 GHz to 2.4835 GHz and the use of DSSS (Direct Sequence Spread Spectrum) technology. This technology allows for efficient and secure wireless communication within the designated frequency range. WLAN products and coverage solutions are essential components of WLAN technology. Jingxin WLAN products offer reliable and high-performance wireless solutions for various networking needs. Overall, WLAN technology provides a convenient and flexible networking solution for users, enabling seamless connectivity and communication in both indoor and outdoor environments. The versatility and scalability of WLAN make it an ideal choice for organizations looking to enhance their network infrastructure with wireless capabilities. With continuous advancements in technology and standards, WLANs continue to evolve, offering faster speeds, improved coverage, and enhanced security features to meet the growing demands of modern wireless connectivity.