BER measurement and OTA performance of QPSK receiver in an anechoic chamber

摘要

In this paper, we present bit-error-rate (BER) measurement and over-the-air (OTA) performance of quadrature phase shift keying (QPSK) receiver in an anechoic chamber. The QPSK receiver has been implemented on software-defined-radio (SDR) platform i.e. universal software radio peripheral (USRP) with monopoles operating at frequency of 1.2 GHz. BER and RF performance of QPSK receiver is measured with different noise levels. It's shown that the measured BER as well as power spectral density (PSD) side levels increase as the injected noise level increases.