Realtek RTL8188CE, RTL8188CEAU is a highly integrated single-chip Wireless LAN (WLAN) controller compatible with the IEEE 802.11n specification. It combines a MAC, a 1T1R capable baseband, and RF in a single chip. The RTL8188CE, RTL8188CEAU provides a complete solution for a high-performance wireless client.
The RTL8188CE, RTL8188CEAU baseband implements Multiple Input, Multiple Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) with one transmit and one receive path (1T1R).
Features include one spatial stream transmission, short Guard Interval (GI) of 400ns, spatial spreading, and support for both 20MHz and 40MHz channel bandwidth.
The RTL8188CE, RTL8188CEAU MAC supports 802.11e for multimedia applications, 802.11i for security, and 802.11n for enhanced MAC protocol efficiency. Using packet aggregation techniques such as A-MPDU with BA and A-MSDU, protocol efficiency is significantly improved. Power saving mechanisms such as U-APSD, and APSD, reduces power wasted during idle time, and compensates for the extra power required to transmit OFDM. The RTL8188CE, RTL8188CEAU provides simple legacy and 20MHz/40MHz co-existence mechanisms to ensure backward and network compatibility.