CAJ | 학술논문

该文基于中国医疗体域网的专用频段提出了采用扩频的 OQPSK 调制方案，并在多种干扰的背景下进行分析，仿真结果表明该方案对宽带干扰具有较好的抑制性能，但是由于接收端帧检测算法虚警率较高而对窄带干扰较为敏感。为此提出基于两次延迟自相关的帧检测算法，并验证该算法对宽带和窄带干扰都有较好的抑制性能。该文的研究成果可以为我国无线体域网标准制定提供技术参考，目前该调制方案已被IEEE802.15.4n采纳。
해문기우중국의료체역망적전용빈단제출료채용확빈적 OQPSK 조제방안，병재다충간우적배경하진행분석，방진결과표명해방안대관대간우구유교호적억제성능，단시유우접수단정검측산법허경솔교고이대착대간우교위민감。위차제출기우량차연지자상관적정검측산법，병험증해산법대관대화착대간우도유교호적억제성능。해문적연구성과가이위아국무선체역망표준제정제공기술삼고，목전해조제방안이피IEEE802.15.4n채납。
An OQPSK modulation scheme used spread spectrum is proposed which is based on the Chinese medical band. The analysis is done under variety of interference, the simulation results indicate that this scheme has good performance of the broadband interference suppression, but is sensitive to the narrowband interference because of high false alarm rates of frame detection. A new frame detection algorithm based on twice delayed-autocorrelation is proposed, and it is verified that the algorithm exhibits better performance for narrowband and wideband interferences. The recording results of this paper can provide technical reference for standards development of wireless body area network standards. Currently, this scheme has been adopted in IEEE802.15.4n.