BCM88335 Data Sheet
Adaptive Frequency Hopping
Adaptive Frequency Hopping
The BCM88335 gathers link quality statistics on a channel by channel basis to facilitate channel assessment
and channel map selection. The link quality is determined using both RF and baseband signal processing to
provide a more accurate frequency-hop map.
Advanced Bluetooth/WLAN Coexistence
The BCM88335 includes advanced coexistence technologies that are only possible with a Bluetooth/WLAN
integrated die solution. These coexistence technologies are targeted at small form-factor platforms, such as
infotainment and telematics modules, including applications such as VoWLAN + SCO and Video-over-WLAN +
High Fidelity BT Stereo.
Support is provided for platforms that share a single antenna between Bluetooth and WLAN. The BCM88335
radio architecture allows for lossless simultaneous Bluetooth and WLAN reception for shared antenna
applications. This is possible only via an integrated solution (shared LNA and joint AGC algorithm). It has
superior performance versus implementations that need to arbitrate between Bluetooth and WLAN reception.
The BCM88335 integrated solution enables MAC-layer signaling (firmware) and a greater degree of sharing via
an enhanced coexistence interface. Information is exchanged between the Bluetooth and WLAN cores without
host processor involvement.
The BCM88335 also supports Transmit Power Control (TPC) on the STA together with standard Bluetooth TPC
to limit mutual interference and receiver desensitization. Preemption mechanisms are utilized to prevent AP
transmissions from colliding with Bluetooth frames. Improved channel classification techniques have been
implemented in Bluetooth for faster and more accurate detection and elimination of interferers (including non-
WLAN 2.4 GHz interference).
The Bluetooth AFH classification is also enhanced by the WLAN core’s channel information.
Fast Connection (Interlaced Page and Inquiry Scans)
The BCM88335 supports page scan and inquiry scan modes that significantly reduce the average inquiry
response and connection times. These scanning modes are compatible with the Bluetooth version 2.1 page and
inquiry procedures.
Broadcom®
September 23, 2015 • 88335-DS100-R
Page 41
BROADCOM CONFIDENTIAL
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