1. - 1 - A Powerful Dual-mode IP core for 802.11 a/b Wireless LANs

2. - 2 - Contents  Introduction  WiLD(WLANIP for LSI Design)  WiLD (WLAN IP for LSI Design) architecture  The architecture  Performance development&integration  IP development & integration  CompleteWLANsystemdevelopment  Complete WLAN system development  Conclusion

3. - 3 - Introduction  WLAN system Being able to connect to a network without having to physically connect wire It reduces the cost of wiring the office It removes the need of a physical reconfiguration in case of an office move New ways to use the WLAN connections in innovative products Wireless portable flat screen TV sets Digital camcorders that connect to a PC with a wireless link

4. - 4 - Introduction  802.11a / 802.11b To address the need of unified standard Allow multiple devices to interoperate The 802.11 standard is the most popular Allow easy bridging between several means of transporting information over different media The 802.11 standard supports several physical layer DSSS / CCK in the 2.4GHz ISM band (802.11b) OFDM in 5GHz band (802.11a)

5. - 5 - WiLD (WLAN IP for LSI Design) It contains all the parts that are necessary to make the system run Concentrate on the final application and only have to Only have to integrate the IP in their ASIC Several elements of WiLD product WiLD RF – dual band (2.4GHz / 5GHz) CMOS radio IP WiLD Software – multi-standard (802.11a / b / e / g / h / i…) protocol software WiLD MAC – a powerful processor-based hardware platform WiLD Modems – hardware signal processing blocks dedicated to a given modulation scheme

6. - 6 -  Architecture of the WiLD Platform The platform has been designed to be usable for many different projects The platform has been designed to be usable for many different projects It’s not specific to 802.11 or any wireless standard It’s not specific to 802.11 or any wireless standard It has high bandwidth of 320 Mbps at 80MHz It has high bandwidth of 320 Mbps at 80MHz The backbone bus is used to move data between the processing block The backbone bus is used to move data between the processing block Direct memory access is built in all data processing block Direct memory access is built in all data processing block The processor is not involved in moving blocks of data The processor is not involved in moving blocks of data Being able to concentrate on handling the protocol Being able to concentrate on handling the protocol Low performance processor can handle very high data rates Low performance processor can handle very high data rates Processing power required doesn’t grow linearly with data rate Processing power required doesn’t grow linearly with data rate The architecture

7. - 7 - The architecture  WiLD MAC Platform

8. - 8 -  Internal RAM of the platform It is used to store the software and to buffer the data packets It is used to store the software and to buffer the data packets It allows downloading the firmware from an external flash or directly from the host It allows downloading the firmware from an external flash or directly from the host  External RAM of the platform It is used to augment the buffering capacity in particularly demanding applications It is used to augment the buffering capacity in particularly demanding applications  External System Bridge It is only interface to the controlling system It is only interface to the controlling system The architecture

9. - 9 -  Architecture of the 802.11 specific blocks Sample stream coming from the radio in reception mode is first handled by the modem Sample stream coming from the radio in reception mode is first handled by the modem  Modem Modem performs all signal processing Modem performs all signal processing Filtering Filtering Compensation DC offset & I/Q mismatch Compensation DC offset & I/Q mismatch Timing & Frequency synchronization Timing & Frequency synchronization Estimation & Compensation of the channel response Estimation & Compensation of the channel response Demodulation & Detection Demodulation & Detection The architecture

10. - 10 - The architecture  Block diagram of 802.11b

11. - 11 - The architecture  Block diagram of 802.11a

12. - 12 - Performance  BER curve 1 st curve 1 st curve AWGN AWGN Ideal receiver Ideal receiver 2 nd curve 2 nd curve Radio impairment effect Radio impairment effect (I/Q mismatch, various offset) (I/Q mismatch, various offset) 3 rd and 4 th curve 3 rd and 4 th curve Multipath channels Multipath channels Small and large office environments Small and large office environments

13. - 13 - IP development & integration  Design methodology & flow The system study and the prototyping platform definition The system study and the prototyping platform definition Draft of the complete system has been defined Draft of the complete system has been defined Partitioning and interfaces between the main parts (RF, Base band hardware, Software) Partitioning and interfaces between the main parts (RF, Base band hardware, Software) System engineer can detail the specification of all different blocks System engineer can detail the specification of all different blocks

14. - 14 - Customers can reuse the prototyping platform to build a realistic trial product Customers can reuse the prototyping platform to build a realistic trial product Building around the existing FPGA board allows to directly start on the development or adaptation of the final software application Building around the existing FPGA board allows to directly start on the development or adaptation of the final software application Without having to wait for the samples of the final ASIC Without having to wait for the samples of the final ASIC There is only need for verification of the interfaces There is only need for verification of the interfaces No significant amount of time has to be spent No significant amount of time has to be spent Designer can concentrate on the final application Designer can concentrate on the final application Complete WLAN system development

15. - 15 - Time to market becomes more important Time to market becomes more important The product manufacturers have less time to spend in R & D The product manufacturers have less time to spend in R & D Benefit from acquiring external IP Benefit from acquiring external IP It allows quick low – risk development of a working product It allows quick low – risk development of a working product The trend in WLAN are towards more integration The trend in WLAN are towards more integration WiLD IP support the integration of several standards into the same chip WiLD IP support the integration of several standards into the same chip Conclusion