一种适合小尺寸设备的基于QAM的全双工中继技术

Co-time Co-frequency Full Duplex Relaying Based on QAM for Small size Devices

兼具路损增益与传输效率的同时同步全双工中继技术是解决小区覆盖和系统容量的有效途径,但现有干扰消除技术因功耗、体积以及成本等问题而难以适应小尺寸通信节点。为此,提出一种基于QAM信号不同分量正交性的全双工中继技术,以帮助小尺寸设备实现简易全双工中继通信。首先针对三节点两跳无线网络的系统模型,给出总体技术方案,在此基础上设计出传输协议,最后进行了相关工程应用分析。该技术具有低复杂度、低成本和低功耗等突出优点,特别符合随着物联网到来而大量涌现的小尺寸设备的特点与需求,具有广阔的应用前景。

Simultaneous full-duplex relay technology with both path loss gain and transmission efficiency is an effective way to solve cell coverage and system capacity,but the existing interference cancellation technology is difficult to adapt to small-sized communication nodes due to power consumption,volume,and cost issues.For this reason,a full-duplex relay technology based on the orthogonality of different components of QAM signals is proposed to help small-sized devices realize simple full-duplex relay communication.First,the overall technical scheme is given for the system model of the three-node two-hop wireless network.On this basis,the transmission protocol is designed,and finally the relevant engineering application analysis is carried out.This technology has outstanding advantages such as low complexity,low cost,and low power consumption.It particularly meets the characteristics and needs of small-sized devices that have emerged in large numbers with the advent of the Internet of Things,and has broad application prospects.