基于软件无线电平台的OFDM系统的研究

In the last thirty years, wireless mobile communications have gone through rapid development, from analog radio to digital radio (narrowband) and digital radio (broadband) . Now we've entered the fourth generation of software-defined radio(SDR) era. Currently, the most widely used software radio platform is a combination of GNURadio and USRP.Orthogonal frequency division multiplexing (OFDM) is a special multi-carrier modulation. OFDM has been proposed in the 1950s , but it has not been developed due to hardware's difficulties. Until the 1990s, there are relevant standards. OFDM is already the core technology in 4G standard and it's application in mobile communication system is imperative.This paper used GNURadio and USRP platform to realize an OFDM transceiver system,and analyzed the actual measurement results .