Communication and positioning,the two pillars of mobile communication systems,are cur-rently being integrated together.The development of communication technologies is the driving force of the positioning progress.In turn,the location information provided by positioning improves the communication performance in various ways.However,the compe-tition of these two functions in terms of resource al-location is a critical issue hindering their integration.In this article,we investigate the trade-off for the inte-grated communication and data-assisted positioning in multiple-input multiple-output orthogonal frequency division multiplexing systems.A data-assisted posi-tioning method is designed first,which uses both po-sitioning reference signals(PRSs)and data signals for positioning.The positioning and communication per-formance are theoretically evaluated respectively,then combined to obtain an integrated performance met-ric.The trade-off is analyzed and the integrated per-formance is optimized considering the priority of dif-ferent functions.Numerical simulations show that the data-assisted positioning can not only improve the po-sitioning accuracy,but also reduce the PRS overhead.And the established integrated performance metric can identify the optimal performance and the correspond-ing resource allocation schemes.

Lincong Han;Rongke Liu;Zijie Wang;Qirui Liu;Qian Zhu;John S.Thompson

School of Electronic and Information Engineering,Beihang University,Beijing 100191,China;Shenzhen Institution of Beihang University,Shenzhen 518063,China;Institute for Digital Communications,School of Engineering,University of Edinburgh,King's Buildings,Edinburgh,EH9 3JL,U.K.

中国通信（英文版）

[1]Lincong Han;Rongke Liu;Zijie Wang;Qirui Liu;Qian Zhu;John S.Thompson-.Performance Trade-off for Integrated Communication and Data-Assisted Positioning in MIMO-OFDM System)[J].中国通信（英文版）,2022(11):129-147

PRSs

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