8.2 PHY

The ATWILC3000-MR110xA module WLAN PHY is designed to achieve reliable and power-efficient physical layer communication specified by IEEE 802.11 b/g/n in single stream mode with 20 MHz bandwidth. The advanced algorithms are used to achieve maximum throughput in a real-world communication environment with impairments and interference. The PHY implements all the required functions such as Fast Fourier Transform (FFT), filtering, Forward Error Correction (FEC) that is a Viterbi decoder, frequency, timing acquisition and tracking, channel estimation and equalization, carrier sensing, clear channel assessment and automatic gain control.

Features

The IEEE 802.11 PHY supports the following functions:

• Single antenna 1x1 stream in 20 MHz channels
• Supports IEEE 802.11b DSSS-CCK modulation: 1, 2, 5.5 and 11 Mbps
• Supports IEEE 802.11g OFDM modulation: 6, 9, 12,18, 24, 36, 48 and 54 Mbps
• Supports IEEE 802.11n HT modulations MCS0-7, 20 MHz, 800 and 400ns guard interval: 6.5, 7.2, 13.0, 14.4, 19.5, 21.7, 26.0, 28.9, 39.0, 43.3, 52.0, 57.8, 58.5, 65.0 and 72.2 Mbps⁽¹⁾
• IEEE 802.11n mixed mode operation
• Per packet TX power control
• Advanced channel estimation/equalization, automatic gain control, CCA, carrier/symbol recovery and frame detection