Abstract
Direct conversion transceivers are very attractive in wireless communications, due to their simplicity and ease of integration. However, their performances are degraded with radio frequency (RF) impairments. On the other hand, multiple input multiple output (MIMO) wireless communication systems promise higher spectral efficiency than what is possible with single input single output (SISO) wireless communications [1], [2]. However, the significant improvement in wireless system performance using MIMO is achieved by increasing the system complexity, which may result in higher sensitivity and lower performance in practical systems. Therefore, the degradations due to system impairments must be studied to evaluate the realistic behavior of the MIMO systems. Moreover, compensation techniques can be applied by understanding the effects of these impairment factors. These impairments may be noticed as phase noise, DC offset, in-phase / quadrature (I/Q) imbalance, and power amplifier nonlinearity [3]. In this chapter, the impairments due to phase noise, DC offset and I/Q imbalance are analyzed and the different techniques for their prevention and compensation are discussed. The power amplifier nonlinearity effects are investigated in the following chapter.
Sign-in/Register to access full text options 
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.
