1) frequency diversity QAM (FDQAM)
频率分集正交调幅
2) orthogonal frequency division
正交频率分集
1.
Target full polarization instantaneous measurement based on orthogonal frequency division
基于正交频率分集的目标全极化瞬时测量方法
2.
Based on orthogonal frequency division and full-polarization instantaneous measuring method,a new waveform vector was designed to get full-polarization information simultaneously under wideband condition.
雷达目标宽带全极化测量在雷达成像、目标识别等领域有着重要应用,为此,基于正交频率分集思想,设计了一种用于宽带全极化瞬时测量的矢量信号波形;给出发射信号模型和回波信号模型,利用该波形的单个脉冲回波,可以获取测量带宽内多频点全极化数据,再经逆离散傅立叶变换后可以得到目标的全极化一维距离像;最后,用仿真数据和实测数据进行仿真实验,验证了该方法的有效性。
3) QAM
正交调幅
4) MR-MQAM
多分辨率M进制正交幅度调制
1.
By using the moment-generating function-based analysis approach, the average Bit Error Rates(BER) for Multiresolution M-ary Quadrature Amplitude Modulation(MR-MQAM) in Multiple Input Multiple Output(MIMO) Nakagami fading channels is described.
使用矩生成函数方法分别推导了Nakagami衰落信道上多分辨率M进制正交幅度调制(MR-MQAM)的平均误比特率(BER)闭合表达式,发送和接收分别采用选择合并/最大比合并(SC/MRC)和正交空时分组编码(OSTBC)。
5) quadrature amplitude modulation
正交调幅，正交幅度调制
6) quadrature modulator
正交调幅器
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条