Here’s a detailed breakdown of various IEEE wireless networking standards:
IEEE Standard | Amendment | Speed | Frequency | Range | Compatibility | Technology/Features |
---|---|---|---|---|---|---|
802.11 | 2 Mbps | 2.4 GHz | Varies | N/A | FHSS/DSSS | |
802.11a | 54 Mbps | 5 GHz | 150 ft | N/A | OFDMA | |
802.11b | 11 Mbps | 2.4 GHz | 300 ft | 802.11b/g/n | DSSS | |
802.11g | 54 Mbps | 2.4 GHz | 300 ft | 802.11b/g/n | DSSS | |
802.11n | 200+ Mbps | 2.4 or 5 GHz | 300 ft | 802.11a/b/g | MIMO | |
802.11ac | 1 Gbps | 5 GHz | 300 ft | 802.11a/b/g/n | MU-MIMO | |
802.16 | Varies | Varies | Varies | N/A | Broadband Wireless Access | |
802.11i | N/A | N/A | N/A | N/A | AES, CCMP, WPA2 |
Additional Notes:
- IEEE 802.15: The standard for Bluetooth, focusing on wireless personal area networks (WPANs).
- IEEE 802.3: Defines Ethernet standards for wired networking.
- IEEE 802.20: Defines LTE (Long-Term Evolution) standards for mobile broadband.
Key Technologies:
- FHSS (Frequency-Hopping Spread Spectrum) and DSSS (Direct-Sequence Spread Spectrum): Methods used in 802.11 for wireless communication.
- OFDMA (Orthogonal Frequency Division Multiple Access): Used in 802.11a for improved data rates.
- MIMO (Multiple Input Multiple Output): Enhances performance by using multiple antennas.
- MU-MIMO (Multi-User MIMO): Allows simultaneous transmission to multiple devices, increasing efficiency.
This summary provides an overview of the evolution of wireless networking standards, their performance characteristics, and compatibility considerations.