Universal 70 Trillion Baseband The Development Of The All-digital Variable Rate Test Signal Source

It is the sub-subject of the universal 70MHz integrated baseband device of the 10th institute to research the test signal resource of the universal 70MHz integrated baseband. This paper mainly discuss the basic principles of this sub-subject, namely software radio technology, reconfigurable technology, direct digital frequency synthesis (DDS) technology. This paper articulate the ways to realize the test signal resource in details based on my researching experiences and show the results of simulation and test.It is based on the platform of hardware of FPGA, DSP, D/A to realize the concise and full-function digital variable bit rate test signal resource. This paper discuss the ways of full digital IF and realize it, certainly the ways to realize the carrier frequency, sub-carrier frequency and variable bit rates with DDS technology is also presented.