Bit-Level Composite Signal Design for Simultaneous Ranging and Communication  

作　　者：Weigang Chen Yalong He Changcai Han Jinsheng Yang Zhan Xu 

机构地区：[1]School of Microelectronics,Tianjin University,Tianjin 300072,China [2]Key Laboratory of Modern Measurement and Control Technology,Beijing 100192,China [3]School of Information and Communication Engineering,Beijing Information Science and Technology University,Beijing 100192,China

出　　处：《China Communications》2021年第6期214-227,共14页中国通信（英文版）

基　　金：This work was supported in part by National Natural Science Foundation of China(61671324);the Director’s Funding from Pilot National Laboratory for Marine Science and Technology(Qingdao)(QNLM201712);Zhan Xu was supported in part by National Natural Science Foundation of China(61620106001).

摘　　要：As the complexity of space exploration missions augments,how to enhance the overall performance of communication,ranging or other functions has become a challengeable problem.Considering the integration of communication and ranging,we present a bit-level composite signal for simultaneous ranging and communication.In this composite method,through a specially designed mapping scheme using low-weight codewords,the information sequence is converted to a sparse sequence which is then superimposed on the ranging code.For ranging,the correlation characteristics of the ranging code component can be maintained to calculate the transmitter-receiver distance.For communications,the sparse sequence can be extracted without interference by eliminating the ranging code component.Simulation results show that the proposed composite signal can support communication and ranging simultaneously with limited sacrifice of ranging performance,and the performance loss of ranging can be controlled and minimized by lowering the density of information sequences using different sparsification encoding methods.

关 键 词：composite signal spectrum sharing lowweight codeword regenerative PN ranging code 

分 类 号：TN911.7[电子电信—通信与信息系统]