2020/07/19 by MinKeun Chung, Liang Liu, Chung, MinKeun +3 · 2 citations
Engineering · #Advanced Wireless Communication Techniques #FOS: Computer and information sciences #FOS: Electrical engineering #Information Theory (cs.IT) #Microwave and Dielectric Measurement Techniques #Millimeter-Wave Propagation and Modeling #Signal Processing (eess.SP) #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2007.09628
openalex publication_date 2020/07/19 · openalex created_date 2022/07/26 · openalex updated_date 2026/07/28
Phase-noise (PN) estimation and compensation are crucial in millimeter-wave\n(mmWave) communication systems to achieve high reliability. The PN estimation,\nhowever, suffers from high computational complexity due to its fundamental\ncharacteristics, such as spectral spreading and fast-varying fluctuations. In\nthis paper, we propose a new framework for low-complexity PN compensation in\northogonal frequency-division multiplexing systems. The proposed framework also\nincludes a pilot allocation strategy to minimize its overhead. The key ideas\nare to exploit the coherence bandwidth of mmWave systems and to approximate the\nactual PN spectrum with its dominant components, resulting in a non-iterative\nsolution by using linear minimum mean squared-error estimation. The proposed\nmethod obtains a reduction of more than 2.5x in total complexity, as compared\nto the existing methods. Furthermore, we derive closed-form expressions for\nnormalized mean squared-errors (NMSEs) as a function of critical system\nparameters, which help in understanding the NMSE behavior in low and high\nsignal-to-noise ratio regimes. Lastly, we study a trade-off between performance\nand pilot-overhead to provide insight into an appropriate approximation of the\nPN spectrum.\n