time-frequency code的意思|示意

The results of simulation show that space-time block code based on MIMO-OFDM is a highly effective technique against the frequency-selective random fading.

仿真结果表明，将空时编码技术与M IMO-OFDM技术相结合能有效地抵抗频率选择性随机衰落。

In this curve, the point which had the largest inclined rate was a timing reference point of low frequency time-code receiver.

该曲线的斜率最大点即为低频时码接收机的秒定时参考点。

Based on OFDM system, a novel space-frequency-time code which combined trellis-coded modulation with differential space-time block code was proposed.

基于OFDM(正交频分复用)系统，提出了一种新的空频时三维编码，将网格编码调制和差分空时分组码进行组合链接设计。

A novel frequency time spreading code by designating the different frequencies to the different mark positions of the modified prime code is proposed.

通过对改进素数码的不同脉冲位置赋予不同的频率，提出了一种新的跳频扩时码。

Using the planar search, code start point and carrier frequency were reached at the same time.

采用了二维联合搜索的快速算法，同时捕获扩频信号的载频和码起点。

The orthogonal sampling demodulating technique for low frequency time-code signal is introduced. Based on the theoretical analysis about its principle and implement method, The simulation is tested.

作者提出低频时码信号的正交扫描解调技术，从理论上分析了正交扫描原理和实现方法，并进行了仿真测试；