Abstract
In terahertz communication, the direct frequency conversion structure in which orthogonal mixer is the main frequency conversion unit, makes engineers get into trouble of in-phase(I) branch and quadrature(Q) branch imbalance, carrier wave leakage, etc. These damages result in system performance tremendous degrades. We proposed a semi-blind method to estimate the I/Q imbalance of THz orthogonal modulator, based on predefined preamble and pilot symbols for quadrature amplitude modulation (QAM). In this paper, a transmitter with Y band quadrature mixer and 20Gbps base-band signal has been tested. The bandwidth of the baseband signal was 7GHz, and the modulation type was 16QAM. By this method, 7dB improvement of the system's symbol Mean Square Error (MSE) has been got. That means the proposed method can be used to eliminate the I/Q imbalance effectively.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
