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Optimized for the 3DSP family of synthesizable, high performance, low power SuperSIMDŽ DSP cores, the programmable 802.11b Baseband incorporates mandatory and optional Wireless LAN features per the IEEE802.11b standards, while leaving headroom for future enhancements in the 2.4 GHz frequency space.
Designed to handle packetized DSSS (Direct Sequence Spread Spectrum) data transmissions, the software implementation supports all data rates and modulation and demodulation schemes (BPSK and QPSK). DSSS works by taking the data stream and modulating it with a second pattern, the chipping sequence. In 1 Mbps and 2 Mbps data rate modes, that sequence is known as the Barker code while the 5.5 Mbps and 11 Mbps data rate modes uses CCK (Complementary Code Keying) where the spreading code length is 8 complex chips based on complementary codes and result in a chipping rate of 11 Mchips/sec. Both long and short header formats are supported in the PLCP (Physical Layer Convergence Procedure) layer.
Proprietary Interpolation, Advanced Channel Matched Filtering and AGC techniques are used for the best system performance and optimal matching with the RF radio components of your choice.
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Wireless LAN PC cards |
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Wireless LAN Access Points |
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Residential Gateways |
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Wireless Home Networking |
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Wireless Audio, Video, Multimedia |
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Wireless VoP |
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Reduced Time To Market |
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Improved System Performance |
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Reduced Development Risk |
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Simplified Product Development |
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Prepared for Future Enhancements |
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