1. Student: Vikas Agarwal Guide: Prof H S Jamadagni
SOFTWARE RADIO
Student: Vikas Agarwal
Guide: Prof H S Jamadagni

2. Review Software radio does not imply removal of hardware.
Means replacement of ASIC’s with flexible and re-configurable hardware to program radio parameters like BW, center freq, modulation-demodulation scheme, filtering, bitstream processing.

3. Project Concept

4. Project Concept

5. Project Concept

6. Project Concept

7. Project Concept

8. Project Concept
PCI or USB
2.4 GHz Link
Software Radio Card

9. Project Concept PCI or USB 2.4 GHz Link Software Radio Card
A software radio card having PCI or USB interface to PC with programmable capability for various air interface standard for e.g WLAN STD

10. And Digital Down Converter Wideband A/D and D/A Converter
Basic Block Diagram
FPGA
Bitstream Processing and Filtering
Modulation and Demodulation
IF processing PC
PCI or USB Interface
Modulation Independent Front End
Upconverter
Downconverter
LNA
Power Amplifier
T/R switch
Digital Up Converter
And Digital Down Converter
Wideband A/D and D/A Converter

11. And Digital Down Converter Wideband A/D and D/A Converter
Basic Block Diagram
FPGA
Bitstream Processing and Filtering
Modulation and Demodulation
IF processing PC
PCI or USB Interface
Modulation Independent Front End
Upconverter
Downconverter
LNA
Power Amplifier
T/R switch
Digital Up Converter
And Digital Down Converter
Wideband A/D and D/A Converter

12. Why DUC and DDC ?…
Does equivalent function of mixer, local oscillator, channel – select filter in traditional analog radio receivers

13. Current Technology Challenge
Move ADC and DAC as close as possible to Antenna so that all the processing can be done digitally.

14. ADC Design

15. DAC Design

16. Front-End Design MAX2422 RF 2.4 GHz UP Converter MAX2671 PA IF 70 MHz
T/R
SWITCH
2.4 GHz
Local Oscillator
MAX2750 RF
2.4 GHz
DOWN
Converter
MAX2681
IF 70 MHz
LNA
MAX2644

17. Work Done System study Study Complexity Involved Components identified
ADC and DAC card design
Front end 2.4 GHz Link Design
DDC and DUC Chipsets studied
PCB Design

18. Future Work FPGA card with USB or PCI interface with PC
Study various air interface standard e.g WLAN
Implementation in FPGA
System Integration
Testing

19. THANK YOU