1. General Descripti
The RTL8822BS-CG is a highly int
with Multi-user MIMO (Multiple-I
controller, SDIO (SDIO 1.1/2.0/3.0)
WLAN MAC, a 2T2R capable WL
AN baseband, and RF in s single chip. The RTL8822BS
provides a complete solution for a h
The RTL8822BS-CG baseband imp
MIMO) Orthogonal Frequency Divi
sion Multiplexing (OFDM) with two transmit
paths (2T2R). Features include two
spatial stream transmissions, short Guard Interval (GI) of
400ns, spatial spreading, and suppo
rt for variant channel bandwidth. Moreover, RTL8822BS
provides one spatial stream space-ti
Low Density Parity Check (LDPC)
range and good minimum sensitivit
the recipient, the RTL8822BS-CG a
lso supports explicit sounding
senders with beamforming capabilit
For legacy compatibility, Direct
Sequence Spread Spectrum (DSSS), Complementary Code
Keying (CCK) and OFDM bas
eband processing are included to support
802.11g and 802.11a data rates.Diff
erential phase shift keying modulation schemes, DBPSK and
DQPSK with data scrambling capab
rates, with long or short preamble.
16QAM, 64QAM and 256QAM m
coding rate of 1/2, 2/3, 3/4, and 5/
6, provide up to 866.7Mbps
The RTL8822BS-CG builds i
equalizer, and a soft-decision Viterb
i decoder to alleviate severe multi
interference in the reception of mult
iple streams. For better detection quality, receive diversity
with Maximal-Ratio-Combine (MR
interference detection and suppressi
and microwave oven interference.
Receive vector diversity for multi-s
MIMO channel. Efficient IQ-imbal
ance, DC offset, phase noise, frequency offset, and timing
offset compensations are provided f
or the radio frequency front
The RTL8822BS-CG supports fast
asynchronous control loops am
ong antennas, antenna diversity functions, and adaptive transmit
power control functions to obtain be
tter performance in the analog portions of the transceiver.
The RTL8822BS-CG MAC suppo
rts 802.11e for multimedia applications, 802.11i and WAPI
(Wireless Authentication Privacy In
frastructure) for security, and 802.11n/802.11ac for enhanced
MAC protocol efficiency. Usi
ng packet aggregation techniques such as A
rated single-chip that support 2-stream 802.11ac so
t, Multiple-Output) with integrated Bluetooth 2.1/
interface, and HS-UART mixed interface. It combi
baseband, and RF in s single chip. The RTL8822
gh-
rformance integrated wireless and Bluetooth de
ements Multi-user Multiple Input, Multiple Output
Orthogonal Frequency Divis
ion Multiplexing (OFDM) with two trans
and tw
patial stream transmissions, short Guard Interval (GI
for variant channel bandwidth. Moreover, RTL8822
block code (STBC), Transmit Beamforming (TxB
Low Density Parity Check (LDPC) t
o extend the range of transmission. At the receiver
range and good minimum sensitivity
is achieved by having receiver diversity up to 2 ant
so supports explicit sounding
t feedback that
senders with beamforming capability.
For legacy compatibility, Direct Sequ
ence Spread Spectrum (DSSS), Complementary C
processing are included to support all IEEE 802.
802.11g and 802.11a data rates.Diffe
rential phase shift keying modulation schemes, DBP
DQPSK with data scrambling capab
ili
are available, and CCK provides support for l
rates, with long or short preamble. T
he high spe
FFT/IFFT paths, combined with BPS
16QAM, 64QAM and 256QAM modu
lation of the individual subcarriers, and rate compa
coding rate of 1/2, 2/3, 3/4, and 5/6, p
rovide up to 866.7Mbps for IEEE 802.11ac MIMO
anced signal detector, an adaptive frequency domai
i decoder to alleviate severe multi-
th effects and m
ple streams. For better detection quality, receive dive
applying up to two receive paths is implemented.
interference detection and suppression a
re
rovided to protect against Bluetooth, cordless
eam application is implemented for efficient utilizati
DC offset, phase noise, frequency offset, and ti
r the radio frequency fr
-end.
eceiver Automatic Gain Control (AGC) with synchr
asynchronous control loops among an
tennas, antenna diversity functions, and adaptive tr
control functions to obtain be
tter performance in the analog portions of the transce
802.11e for multimedia applications, 802.11i and
Authentication Privacy Infr
astructure) for security, and 802.11n/802.11ac for
t aggregation techniques such as A-MPDU with B
utions
Output) with integrated Bluetooth 2.1/3.0
/4.1
UART mixed interface. It combine
s a
capable WLAN baseband, and RF in s single chip. The RTL8822BS
-CG
performance integrated wireless and Bluetooth dev
ice.
user Multiple Input, Multiple Output (M
U
receive
Features include two spatial stream transmissions, short Guard Interval (GI)
of
support for variant channel bandwidth. Moreover, RTL8822
BS-CG
(STBC), Transmit Beamforming (TxBF
) and
range of transmission. At the receiver, ex
tended
receiver diversity up to 2 antenna
s. As
lps
For legacy compatibility, Direct Sequence Spread Spectrum (DSSS), Complementary Code
802.11g and 802.11a data rates.Differential phase shift keying modulation schemes, DBPS
K and
are available, and CCK provides support for legac
y data
FFT/IFFT paths, combined with BPSK
, QPSK,
individual subcarriers, and rate compati
ble
FDM.
ced signal detector, an adaptive frequency domain
tual
of multiple streams. For better detection quality, receive diversi
ty
applying up to two receive paths is implemented. R
obust
provided to protect against Bluetooth, cordless phone,
lication is implemented for efficient utilization o
f the
imbalance, DC offset, phase noise, frequency offset, and tim
ing
r Automatic Gain Control (AGC) with synchronou
s a
asynchronous control loops among antennas, antenna diversity functions, and adaptive tran
smit
control functions to obtain better performance in the analog portions of the transcei
ver.
CG MAC supports 802.11e for multimedia applications, 802.11i and W
API
Authentication Privacy Infrastructure) for security, and 802.11n/802.11ac for enhanc
ed
and
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