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Document Number: 002-14949 Rev. *G
Page 53 of 113
PRELIMINARY
CYW43353
The key PHY features include:
■
Programmable data rates from MCS0–9 in 20 MHz, 40 MHz, and 80 MHz channels, as specified in IEEE 802.11ac
■
Supports Optional Short GI mode in TX and RX
■
TX and RX LDPC for improved range and power efficiency
■
Supports optional space-time block code (STBC) receive of two space-time streams for improved throughput and range in fading
channel environments.
■
All scrambling, encoding, forward error correction, and modulation in the transmit direction and inverse operations in the receive
direction.
■
Supports IEEE 802.11h/k for worldwide operation
■
Advanced algorithms for low power, enhanced sensitivity, range, and reliability
■
Algorithms to improve performance in presence of Bluetooth
■
Automatic gain control scheme for blocking and non blocking application scenario for cellular applications
■
Closed loop transmit power control
■
Digital RF chip calibration algorithms to handle CMOS RF chip non-idealities
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On-the-fly channel frequency and transmit power selection
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Supports per packet RX antenna diversity
■
Available per-packet channel quality and signal strength measurements
■
Designed to meet FCC and other worldwide regulatory requirements
Figure 27. WLAN PHY Block Diagram
Filters and Radio
Comp
Frequency and
Timing Synch
Carrier Sense, AGC, and
Rx FSM
Radio Control Block
Common Logic Block
Filters and Radio Comp
AFE and
Radio
MAC
Interface
Buffers
OFDM Demodulate
Viterbi Decoder
Tx FSM
PA Comp
Modulation and
Coding
Modulate/Spread
Frame and
Scramble
FFT/IFFT
CCK/DSSS Demodulate
Descramble and
Deframe
COEX