Effect of Doppler Shift on the Performance of Full-Duplex Systems

Min ZHANG  Jianxin DAI  Jin-Yuan WANG  Junxi ZHAO  Chonghu CHENG  

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E101-A   No.8   pp.1273-1279
Publication Date: 2018/08/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E101.A.1273
Type of Manuscript: LETTER
Category: Communication Theory and Signals
Keyword: 
full-duplex,  MRC/MRT,  Doppler shift,  large number theorem,  

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Summary: 
This paper considers a multi-user large-scale multiple-input multiple-output (MIMO) system with single cell working in full-duplex mode. Maximum ratio combining/maximum ratio transmission (MRC/MRT) is applied to maximize the output signal to noise ratio (SNR) of the receiver. Then we deduce the asymptotic uplink and downlink sum rate in full-duplex mode by using the large number theorem, also giving the comparison of traditional half-duplex and full-duplex. Besides, we analyze the influence of Doppler shift on the performance of the system. Finally, the change of the system performance on the user velocity is illustrated.