1. CAST – Reconfigurability CAST – Configurable Radio with Advanced Software Technology Reconfigurability – Enabling Technology Problems Galway – 1 st October 2000

2. CAST – Reconfigurability Enabling Technology Problems - Summary CAST SDR system Processing and Control of SDR Enabling technologies –Usage –Resources –Control Conclusions

3. CAST – Reconfigurability Ideal Software Radio Layered System* * M. Butler et al, MILCOM, New York, pp. 174-179, 1998. Intelligent Support Layer Configuration Software Layer Configurable Hardware Layer Antenna RF/IF D/A A/D User Info & Application Packets Data bits Commands Algorithms Management Layer Radio Interface Layer

4. CAST – Reconfigurability CAST Software Defined Radio System FPGA DSP RISC JAVA Configuration Engine Configuration Files Configuration Programs Configuration Algorithms Configurable Processing Hardware Intelligent Application Layers

5. CAST – Reconfigurability Technology Usage

6. CAST – Reconfigurability Mobile layers

7. CAST – Reconfigurability Mobile layers

8. CAST – Reconfigurability Mobile layers

9. CAST – Reconfigurability Mobile layers

10. CAST – Reconfigurability Mobile layers Intelligent decisions Processing Resource Allocation Configuration Retrieval & Management Object Oriented control approaches Interfacing to Processing ……

11. CAST – Reconfigurability Mobile layers Intelligent decisions Processing Resource Allocation Configuration Retrieval & Management Object Oriented control approaches Interfacing to Processing …… MCU DSP FPGA ASIC FPAA Hybrids Discrete Interfaces

12. CAST – Reconfigurability Physical Resources MCU/DSP –C/C++/assembly/RTOS/high level –Device independence is possible –Object oriented approaches well developed –Resources Processing time IO speed Memory

13. CAST – Reconfigurability Physical Resources FPGA/FPAA/Hybrids –Bitstream controlled from dedicated implementation –Device independence not developed –Object oriented approaches not developed –Resources Configurable fixed resource Internal device routing IO interfaces Memory

14. CAST – Reconfigurability Physical Resources ASIC/Discrete components –Parameters to control very limited function –Device dependant –Object oriented approaches possible –Resources Fixed resource On, off, or modified function

15. CAST – Reconfigurability Physical Resources Interfaces –Data Transferral between functional tasks within different devices –Object oriented approaches possible –Resources Fixed dependant upon system Time/resource shared devices New mechanisms are required

16. CAST – Reconfigurability Conclusion Some enabling technologies are more developed than others Techniques are required for effective design of the processing system and efficient use of resources. i.e. FPGA for CAST Device dependence is a problem ! How are capabilities characterised for such systems ??

17. CAST – Reconfigurability Contact & Website CAST Project –Parbhu.patel@panasonic-pmdc.co.uk –http://www.cast5.freeserve.co.uk HW Communications Ltd –hwcl@hwcomms.co.uk –http://www.hwcomms.co.uk