CAJ | 학술논문

针对传输速率为10 Gb/s太赫兹通信系统，给出了调制方式优选方案。首先详细介绍毫米波、自由空间激光通信中常用调制方式的特性，包括功率有效性、频带利用率、实现复杂度和峰均比；接着介绍太赫兹通信目前采用的调制方式，然后重点讨论在具体实现时，相位噪声、模/数转换器采样率、功率放大器非线性对调制方式选取的影响；最后在链路预算基础上结合具体器件参数，考虑相位噪声和功放非线性因素，对优选调制方式误码率性能进行仿真。
침대전수속솔위10 Gb/s태혁자통신계통，급출료조제방식우선방안。수선상세개소호미파、자유공간격광통신중상용조제방식적특성，포괄공솔유효성、빈대이용솔、실현복잡도화봉균비；접착개소태혁자통신목전채용적조제방식，연후중점토론재구체실현시，상위조성、모/수전환기채양솔、공솔방대기비선성대조제방식선취적영향；최후재련로예산기출상결합구체기건삼수，고필상위조성화공방비선성인소，대우선조제방식오마솔성능진행방진。
The optimization scheme of modulation mode is proposed for 10 Gbps terahertz communication system. The cha?racteristics of some common modulation modes in millimeter wave and free space laser communication are introduced,including power efficiency,band utilization,implementation complexity and peak?to?average power ratio. The modulation modes in current terahertz communication system is also introduced. The effect of phase noise,A/D converter sampling rate and power amplifier nonlinear on the selection of modulation mode is discussed emphatically. The phase noise and nonlinear factors of power amplifier are considered in combination with specific device parameters based on link budget. The bit?error?rate character of the optimization modulation mode is simulated.