Because it can transmit almost as directed as a laser when communicating, it transmits to a point or even a surface, so security is one of the advantages in the field of visible light communication.

Although there are many advantages, wireless optical communication technology also has a fatal disadvantage of being afraid of being blocked!

It is also because of this disadvantage of being afraid of being blocked, so wireless optical communication technology has not improved until now.

It is only used in some special occasions, military occasions and some niche communication occasions, such as TV infrared remote control and so on. ”

Hearing the words of the professor at Naxia Hua University, the audience nodded slightly.

The facts seem to prove that the words of the professor at Xia Hua University this time are true, if the technology is not fatally flawed.

Such a good technology must have entered people's lives a long time ago, and it will not be like now, only TV remote control can see the figure of wireless optical communication technology.

"Professor He, apart from the fear of being obscured, is there any other reason that prevents this wireless optical communication technology from entering our lives?"

The hostess duly asked the questions that came to people's minds.

"In addition to the fear of being obscured and causing the signal to be interrupted, there are other limitations, such as the problem of miniaturization of wireless module components!

You may not know it, but in fact, two years ago, in 2003, more than a dozen internationally renowned enterprises in Hanguo, island countries and Medi countries established the VLC Alliance.

The members of this alliance include Sanxing, Songxia, Sanleng, and Kasio...... and more than 10 international enterprises.

The purpose of this VLC alliance is to develop visible light communication technology, and the purpose is to replace microwave communication technology with this technology, just like Lin Xuan.

But as you all know, two full years have passed, and a number of international giant companies have joined forces to develop for two years, and there is still no result!

The biggest problem that bothered them was not the issue of standard patents for visible light communications, which were just a set of self-defined rules.

With the strength of more than a dozen international companies, they have already completed the formulation of standards for visible light communication.

But there was one thing that stuck in their direction and wasted the huge amount of research money they had invested!

This problem is how to successfully reduce the entire set of visible light communication system components into small parts for marketization.

So two years have passed, and they still haven't launched anything, and they have burned tens of millions of dollars in research funds in vain. ”

"Is it a problem to miniaturize components?!"

The hostess in front of the TV, including the audience, nodded slightly.

They seemed to understand something, but in fact they didn't understand anything at all, so they could only nod their heads blindly to indicate that they had finished.

In fact, they had no idea how difficult this miniaturization problem was, and later generations of Chinese scientists had also conducted research in this area.

In the end, it took 7 years and countless funds and manpower to solve this technical problem, and successfully reached the world's leading level in this field.

As for the VLC Alliance, which was the first to study, they were close to giving up when faced with this dilemma.

Therefore, the later generations of Daxia can accumulate thick development and strong perseverance, successfully solve the problem of component miniaturization and large-scale integration and mass production, and successfully catch up with the VLC Alliance, a pioneer.

It has achieved a transmission speed of 50GB per second for laboratory devices and 10GB per second for civilian devices, achieving the world's leading level!

"Professor He, if Lin Xuan can really overcome these shortcomings, then what can wireless optical communication bring us?"

The hostess asked the second important question from this talk show.

"If Lin Xuan can really overcome the shortcomings of wireless optical communication technology, then visible light communication has a great future!

It can even be said that it has excellent complementarity with wireless communication technology, and the convergence of the two will make wireless communication technology more powerful. ”

"Can you be more specific?"

The hostess showed a curious look and asked Professor He.

Nodding slightly, Professor He of Xiahua University slowly spoke:

"For example, the biggest difference in signal diffusion between wireless communication and visible light communication is that a signal is concentrated on a surface or point, and a signal spreads in all directions.

Among them, if there are too many microwave radio communication devices that spread in all directions.

Then you can imagine the undesirable effects of countless people in your surroundings emitting the same signal.

It's like throwing a bunch of things together and cooking porridge, which obviously affects the use of wireless devices.

And in order to solve this problem, scientists can only solve it through stupid methods.

If one transmission fails, you need to get it twice, and you have to repeatedly verify that the signal packet is not lost.

The end result is that it is very pleasant to use mobile phones to surf the Internet when there are few people, but when there are many people or in the case of dense crowds, the wireless network speed is really bad.

This is the natural flaw of radio technology!

After all, his signal is spread in all directions, and it will certainly inevitably have an impact on other equipment, causing serious interference.

Wireless communication technology, on the other hand, does not have such a disadvantage, because the direction of light transmission is directional, so it can keep the device in a very high theoretical working condition all the time.

The result is that it is very stable, which means that his network speed can always run full of theoretical network speed, which is his biggest advantage.

I calculated yesterday through mathematics that if you use optical communication technology, you will not be afraid of the problem of wireless signal interference from other wireless devices.

Therefore, under the same circumstances, the actual network speed of wireless optical communication technology will generally exceed that of radio and microwave communication technology by more than 4~5 times!

In the current situation, once the wireless optical communication technology can really be implemented, then there is no problem with the stable transmission network speed of 1G~2G per second! ”

"What? It's no problem to reach 1G~2G network speed per second?!!

”

A young man at the scene exclaimed, the speed of this wireless optical communication technology far exceeded his understanding.

The previous WIPI wireless LAN speed of 600 megabytes per second has shocked the world, and it is no problem to hear that the network speed of a wireless optical communication technology can reach 1G~2G per second.

The young man only felt dizzy in his head, and the speed of this visible light communication technology was too terrifying.

Thinking of this, he couldn't help but think about what he could do with this terrifying network speed once this technology was applied.

First of all, the first thing that came to his mind was undoubtedly to use it to download movies and learn from the teacher's lessons, but in an instant he shook his head again.

How can such a terrifying internet speed be used to download movies and learn knowledge, shouldn't this internet speed be used to play games? This is the right way!

On the other side, Professor He of Xia Hua University shook his head slightly at this time and said with a smile:

"It's a pity, the future of wireless optical communication technology is very good, but it's just a distant dream, we don't have to think too much, just do what we have to do, don't have too much hope for Lin Xuan.

After all, the shortcomings of the fear of being blocked alone can make this wireless optical communication technology shelf, so that this technology will never be able to land, and it will always be just a distant dream!

So I'm not optimistic about Lin Xuan's attempt to replace radio communication technology with visible light communication technology, and I have to say that Lin Xuan is really a little unwise this time.

But there is no way, after all, he was sued by the WiFi Alliance for infringing their WIFI patents by Hantang Technology.

Faced with the inability to use WiFi-related patents in the future, Hantang Technology can only rush to the doctor.

It is impossible to grasp the blank patent in the field of wireless optical communication and develop wireless optical communication technology.

I believe that if Lin Xuan had a choice, he would never choose to develop wireless optical communication technology.

But in any case, Lin Xuan did make a stupid decision this time.

Although this decision was not his subjective will, it was a panicked choice in the rush to the doctor.

But until now, I haven't heard him announce that he has given up researching wireless optical communication technology, which proves that Lin Xuan is really desperate to save face, and he refuses to admit that he did wrong......

I believe that in the future, Hantang Technology will suffer bitter fruits because of Lin Xuan's behavior. ”

Speaking of this, Professor He shook his head slightly, just looking depressed for Hantang Technology.

It seems that he is an absolute supporter of Hantang Technology, and he is sad that Hantang Technology has such an aspirant helmsman as Lin Xuan.

But he obviously ignored that if it weren't for Lin Xuan, Hantang Technology would just be an ordinary mobile phone factory.

The audience, including the audience in front of the TV, couldn't help but feel sorry for the huge amount of money Lin Xuan had invested when they heard Professor He's words.

With Lin Xuan's character, this money will definitely be invested in this field, and real money will be invested in research, in this case, because of the shortcomings of visible light communication, which is afraid of being blocked.

The final result may be there, but it is certainly not satisfactory, and it will not replace the position of radio communication, and in the end there will be little gain.

So this money may really be in vain!

Thinking of this, people felt sorry for the funds that Lin Xuan burned in vain.

It has to be said that such a huge amount of money was burned in vain, and the final research and development results could not be used, which has to be said to be sad.

While sighing, they couldn't help but agree with Professor He's words, Lin Xuan's behavior was indeed a bit reckless.

Lin Xuan should perhaps give up the field of wireless optical communication and devote all of the company's energy to the field of microwave radio communication.

Directly abandon the relevant technical standards of the WiFi Alliance, give up 2.4G, give up 5G direct, and directly develop 3.5G or 4G and 6G communication technologies.

This is the right way to build your own communication standards from scratch.

"It's a pity."

In front of the Daxia TV, a young man shook his head, feeling sorry for the funds burned by Hantang Technology.

"Lin Xuan is indeed a little impulsive this time."

In front of a certain TV set in Great Xia, a middle-aged man shook his head slightly, feeling sorry for the funds that Lin Xuan had burned.