GNU Radio and USRP B210 based Software Defined Radio for OFDM Data Transmission

Wireless communication technology has seen outstanding developments. In the future, several problems like coverage, data rates, and an increase in the number of users have to be faced. Software-defined radios will play a major role in the efficient usage of the available spectrum. To improve the performance, many wireless communication techniques have been proposed but, implementation of proposed techniques in actual hardware is very challenging. Due to advances in technology, developers need to reduce development time and design cycle. The hardware implementation of a system takes a long time, a lot of effort, and requires a high cost. This paper shows the methodology to design digital communication using the GNU Radio platform to accelerate the verification and lessen the time required for validation. It also reduces the implementation cost of the communication system. OFDM has good performance in terms of bit error rate (BER) and high spectrum efficiency. It is used in the next generations like 4G and 5G. This paper presents a practical approach through the GNU Radio platform which is useful in real applications. We implemented OFDM with universal software radio peripheral. An experimental setup is built using two USRP B210. The implementation of OFDM is tested without obstruction and with obstruction.