GNURadio中的QPSK发送和接收 [英] QPSK transmission and reception in GNURadio

问题描述

我已经实现了这一点:

接收方的星座图与发送方的星座图相同，但消失了一段时间并且不连续，它闪烁并不断移动，并且在很短的时间内也显示了垃圾图.

Constellation plot of receiver side is same as that of transmitter but it disappears for some moment and is not continuous, It flickers and keeps on moving around and for a very short moment show a garbage plot also.

如何解决该问题以获得正确的连续图?

How to resolve that to get a correct continuous plot?

推荐答案

请不要在硬件流程图中使用"Throttle"块.

Never use a "Throttle" block in a hardware flow graph.

它的作用只是将处理速度平均大约"减慢到大致".迟早会导致您的计算机无法从硬件源中足够快地获取样本，并且您会遇到溢出的情况.

What it does is just slow down the processing speed "about roughly" to the requested rate on average. That will sooner or later lead to your computer not fetching the samples from your hardware source quick enough, and you run into overflows.

那可能是您看到垃圾"情节的时刻.

That is probably the moment when you see "garbage" plots.

通常，20 MS/s的速度很多，通常，硬盘驱动器写入数据的速度不够可靠.如果问题仍然存在，也请禁用文件接收器.

Generally, 20 MS/s is a lot, and usually, hard drives aren't reliably fast enough at writing away that data. Also disable the file sink if the problem persists.

它消失了一会儿并且不连续，它闪烁并不断移动

it disappears for some moment and is not continuous, It flickers and keeps on moving around

恭喜！您发现了无线频道.就是这样有关更多信息，请查阅您的无线通信基础知识.这不是编程问题:)

Congratulations! You discovered the wireless channel. That's what happens. Consult your wireless communications basics knowledge for more on that; this is not a programming problem :)

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