Design, Implementation and Analysis of data transmission and reception using OQPSK with LabVIEW and NI USRP

Digital modulation schemes have gained significant importance in today’s world. OQPSK is more advantageous than many modulation techniques in the aspects like bit error rate, bandwidth efficiency, etc. We implemented this technique to know how well the packets of information are transmitted and received with respect to varying parameters. The Packet transmission/reception is demonstrated by interfacing the created VI in LabVIEW with NI USRP. We specified various parameters that are required for the transmission and reception to take place such as specifying the number of samples, queue length, and packets that are to be transmitted. The filter parameters are generated specifically for each block and also the synchronization is done in the receiver section. This can be wholly implemented with the use of LabVIEW, USRP, and a host. With certain advancements to this implementation, the data can be sent much faster and with more reliability.