Analog Carrier Recovery for Broadband Wireless Communication Links

In this paper we demonstrate the feasibility of a novel carrier recovery approach for broadband wireless communication systems with direct conversion topology through measurements. In a direct conversion IQ mixer, a part of the local oscillator (LO) signal is leaked to the radio frequency (RF) port. Consequently the RF signal traveling over the air towards receiver contains a part of the LO signal. This work introduces a method to extract the LO content from the received signal in a modulation type and baud rate independent manner with a single hardware setup.