BCM43903KUBGT Datasheet, PDF (37/87 Pages) Cypress Semiconductor – WICED™ IEEE 802.11 b/g/n SoC with an Embedded Applications Processor

BCM43903 Preliminary Data Sheet
IEEE 802.11^™ b/g/n PHY
IEEE 802.11^™ b/g/n PHY
The BCM43903 WLAN digital PHY complies with IEEE 802.11b/g/n single-stream specifications to provide
wireless LAN connectivity supporting data rates from 1 Mbps to 433.3 Mbps for low-power, high-performance,
handheld applications.
The PHY has been designed to work in the presence of interference, radio nonlinearity, and various other
impairments. It incorporates optimized implementations of filters, FFTs, and Viterbi-decoder algorithms. Efficient
algorithms have been designed to achieve maximum throughput and reliability, including algorithms for carrier
sensing and rejection, frequency/phase/timing acquisition and tracking, and channel estimation and tracking.
The PHY receiver also contains a robust IEEE 802.11b demodulator. The PHY carrier-sensing algorithm
provides high throughput for IEEE 802.11b/g hybrid networks with Bluetooth coexistence.
The key PHY features include:
• Programmable data rates from MCS0–7 in 20 MHz channels.
• Support for Optional Short GI and Green Field modes in TX and RX.
• TX and RX LDPC for improved range and power efficiency.
• All scrambling, encoding, forward error correction, and modulation in the transmit direction and inverse
operations in the receive direction.
• Support for IEEE 802.11h/k for worldwide operation.
• Advanced algorithms for low power consumption and enhanced sensitivity, range, and reliability.
• Algorithms to improve performance in the presence of externally received Bluetooth signals.
• An automatic gain control scheme for blocking and nonblocking cellular applications.
• Closed loop transmit power control.
• Digital RF chip calibration algorithms to handle CMOS RF chip process, voltage, and temperature (PVT)
variations.
• On-the-fly channel frequency and transmit power selection.
• Per-packet RX antenna diversity.
• Available per-packet channel quality and signal-strength measurements.
• Compliance with FCC and other worldwide regulatory requirements.
Broadcom^®
March 12, 2016 • 43903-DS102-R
BROADCOM CONFIDENTIAL
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