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1. General Description
This document is to specify the product requirements for 802.11a/b/g/n/ac PCI-e Module. This
Card is basedon Realteak RTL8822BEH chipset that is a highly integrated single-chip that support
2-stream 802.11ac solutions with Multi-user MIMO (Multiple-Input, Multiple-Output) with Wireless
LAN (WLAN) PCI Express network interface controller and HS-UART mixed interface.
The RTL8822BE provides a complete solution for a high-performance integrated wireless and
Bluetooth device.
The RTL8822BEH-VR-CG baseband implements Multi-user Multiple Input, Multiple Output
(MU-MIMO) Orthogonal Frequency Division Multiplexing (OFDM) with two transmit and two receive
paths (2T2R). Features include two spatial stream transmissions, short Guard Interval (GI) of 400ns,
spatial spreading, and support for variant channel bandwidth. Moreover, RTL8822BEH-VR-CG
provides one spatial stream space-time block code (STBC), Transmit Beamforming (TxBF) and Low
Density Parity Check (LDPC) to extend the range of transmission. At the receiver, extended range
and good minimum sensitivity is achieved by having receiver diversity up to 2 antennas. As the
recipient, the RTL8822BE also supports explicit sounding packet feedback that helps senders with
beamforming capability.
For legacy compatibility, Direct Sequence Spread Spectrum (DSSS), Complementary Code
Keying (CCK) and OFDM baseband processing are included to support all IEEE 802.11b, 802.11g
and 802.11a data rates. Differential phase shift keying modulation schemes, DBPSK and DQPSK
with data scrambling capability are available, and CCK provides support for legacy data rates, with
long or short preamble. The high speed FFT/IFFT paths, combined with BPSK, QPSK, 16QAM,
64QAM and 256QAM modulation of the individual subcarriers, and rate compatible coding rate of
1/2, 2/3, 3/4, and 5/6, provide up to 866.7Mbps for IEEE 802.11ac MIMO OFDM.
2. Features
Compatible with IEEE 802.11a standard to provide wireless 54Mbps date rate.
Compatible with IEEE 802.11g standard to provide wireless 54Mbps date rate.
Compatible with IEEE 802.11b standard to provide wireless 11Mbps date rate.
Compatible with IEEE 802.11n standard to provide wireless 300Mbps date rate.
Compatible with IEEE 802.11ac standard to provide wireless 866.7Mbps date rate.
Operation at 2.4~2.5GHz and 5.15~5.825GHz frequency band to meet worldwide regulations
Provides simple legacy and 20MHz/40MHz/80MHz co-existence mechanisms to ensure
backward andnetwork compatibility.
Supports infrastructure networks via Access Point and ad-hoc network via peer-to-peer
communication
Supports IEEE 802.11i(WPA and WPA2), WAPI, enhanced security
Friendly user configuration and diagnostic utilities
PCIe 2.0 interface, Mini PCIe
ROHS compliant
