PRELIMINARY
CYW43340
10.2 WLAN PHY Description
The CYW43340 WLAN Digital PHY is designed to comply with IEEE 802.11a/b/g/n single-stream to provide wireless LAN connectivity
supporting data rates from 1 Mbps to 150 Mbps for low-power, high-performance handheld applications.
The PHY has been designed to work with interference, radio nonlinearity, and impairments. It incorporates efficient implementations
of the filters, FFT and Viterbi decoder algorithms. Efficient algorithms have been designed to achieve maximum throughput and
reliability, including algorithms for carrier sense/rejection, frequency/phase/timing acquisition and tracking, channel estimation and
tracking. The PHY receiver also contains a robust IEEE 802.11b demodulator. The PHY carrier sense has been tuned to provide high
throughput for IEEE 802.11g/11b hybrid networks with Bluetooth coexistence. It has also been designed for shared single antenna
systems between WL and BT to support simultaneous RX-RX.
10.2.1 PHY Features
■ Supports IEEE 802.11a, 11b, 11g, and 11n single-stream PHY standards.
■ IEEE 802.11n single-stream operation in 20 MHz and 40 MHz channels
■ Supports Optional Short GI and Green Field modes in TX and RX.
■ Supports optional space-time block code (STBC) receive of two space-time streams.
■ TX LDPC for improved range and power efficiency
■ 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
■ Simultaneous RX-RX (WL-BT) architecture
■ 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
■ On-the-fly channel frequency and transmit power selection
■ Supports per packet RX antenna diversity.
■ Designed to meet FCC and other worldwide regulatory requirements.
Document Number: 002-14943 Rev. *L
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