From a university student to a chief academician

Chapter 165 Li-Fi must be completely domestically produced and independent

The car stopped in front of the University of Electronic Science and Technology of China, Ye Fei got out of the car, the driver master opened the trunk, Ye Fei took off the luggage, and then the car drove away.

Ye Fei stood in front of the gate and glanced at the number plate above the gate, which read the words 'University of Electronic Science and Technology'.

Students come and go in front of the gate.

It was after five o'clock in the afternoon, and it was the time for the students to finish class. Many students went out to play together after class.

Seeing Ye Fei appearing at the school gate with a suitcase, many people looked at Ye Fei curiously.

Seeing that Ye Fei is very young, I thought Ye Fei was also a student.

But are students just now dragging their suitcases to school?

Now is not the time for admission!

Ye Fei didn't have a key card because he had to swipe his key card to enter the school.

So Ye Fei took out his mobile phone and called Academician Ning.

Institute of Wireless Communication Technology, University of Electronic Science and Technology of China, Office of Academician Ning!
"Xiao Liu!" Academician Ning said, "Has anyone gone?"

Xiao Liu is the assistant of Academician Ning, a 30-year-old man wearing glasses.

Academician Ning called Ye Fei early in the morning and asked him when he would arrive. Ye Fei said that the flight was at 02:30 in the afternoon.

So, around three o'clock in the afternoon, Academician Ning asked Xiao Liu to send someone to guard the exit of the airport to pick up Ye Fei.

"Go." Xiao Liu said.

Academician Ning raised his hand, glanced at his watch, and said, "Call and ask if anyone has received it."

"Ok!"

After Xiao Liu finished speaking, he walked to the side, took out his mobile phone and made a call.

At this time, Academician Ning's cell phone rang, and he took out the cell phone to take a look, and found that it was Ye Fei's call.

He quickly connected and said with a smile, "Professor Ye, are you here yet?"

"Here we are!" Ye Fei said, "I'm at the gate of the University of Electronic Science and Technology of China. You can send someone out to pick me up. I can't get in without a key card."

"Huh?" Academician Ning asked in surprise, "Didn't my people receive it from you?"

"I came here by myself."

"Oh, okay, I'll pick you up at the door now."

After hanging up the phone, Xiao Liu came over and said, "Dean, the person didn't answer, and he's still waiting at the gate of the airport."

Academician Ning is the head of the Institute of Wireless Communication Technology, and his position is the dean.

Academician Ning said: "What are you going to pick up? Professor Ye has already arrived at the school gate, please let him come back. We will pick up Professor Ye at the school gate now."

Xiao Liu was stunned for a moment, and then said: "Okay!"

After speaking, the two went out, and on the way Xiao Liu called the person who picked up Ye Fei to come back.

"Professor Ye!" Academician Ning walked to the school gate, greeted Ye Fei with a smile, and shook hands with Ye Fei.

"I'm really sorry to ask you to come here in person. I originally sent someone to pick you up, but the man didn't pick you up."

Ye Fei smiled and said, "I want to say sorry, I didn't explain the flight clearly."

"Let's go!" Academician Ning said, "Let's go in, Xiao Liu, and help Professor Ye carry the luggage."

"Professor Ye, let me do it!" Xiao Liu walked two steps forward.

Ye Fei said: "No need, there are not many things, I will do it myself."

After speaking, they walked to the school.

Along the way, Academician Ning introduced the University of Electronic Science and Technology of China to Ye Fei.

Ye Fei came to Rongcheng for the first time. He always heard people say that Rongcheng is a very comfortable city.

Don't go to Sichuan if you are young, and don't leave Shu if you are old!

In Rongcheng, there are two things that are most famous, food and beauty.

Rongcheng is also a city with a very developed tourism industry.

This caused many people from all over the country to gather in Rongcheng.

But because of this, Rongcheng was no longer at ease, and began to roll inward.

Ye Fei didn't have much feeling for Rongcheng when he first came to Rongcheng.

Entering the Institute of Wireless Communication Technology, Academician Ning said: "I will lead you to meet the people in each research room first."

"Okay!" Ye Fei nodded.

Xiao Liu stepped forward and said, "Professor Ye, give me your luggage, and I'll send it to your residence."

"Thank you!" Ye Fei handed the luggage to Xiao Liu.

"It's okay!" Xiao Liu said with a smile, "I should do it."

Afterwards, Academician Ning led Ye Fei to meet with people from various research laboratories.

After a long time, the two returned to Academician Ning's office.

"I came to you mainly to solve the short pulse technology. Do you have anything to say?"

Ye Feidao: "To solve the short pulse technology, I first need to know all the research materials, and then I can provide help from the short pulse technology."

"This is natural." Academician Ning said: "I will ask Xiao Liu to give you the information, and we can discuss it after reading it?"

"Yes!" Ye Fei said.

For the next time, Ye Fei was looking at Li-Fi research materials.

A week later!

Ye Fei lived in an apartment next to the University of Electronic Science and Technology of China.

In the study room!
At this moment, Ye Feizheng was chatting with Shesky Marvin, editor-in-chief of the scientific journal, and Professor Adiva Aiken from Princeton University.

Ye Fei has not forgotten that Zhang Yitang recommended him to be the review editor of a scientific journal.

Ye Fei interviewed the review editor of Mathematical Number Theory.

Adiva Aiken is a tenured professor at Princeton University, focusing on number theory.

At the same time, he is an internationally renowned number theorist, and his most famous event is to prove the weak BSD conjecture.

The BSD conjecture is one of the seven difficult problems of mathematics.

The editor-in-chief said: "Professor Ye, hello, nice to meet you, this is Professor Adiva Aiken from Princeton University."

Ye Fei said: "Hello!"

The editor-in-chief said: "I was very happy when Professor Zhang Yitang recommended you. I know that you have proved the ABC conjecture. I recognize your ability very much."

"So, today, our interview is just a formality."

Ye Fei nodded and said, "Okay!"

Afterwards, Ye Fei talked with them about some number theory issues.

After a long time, the editor-in-chief said, "Professor Ye, this is the end of our interview. Soon, you will receive the membership card of the North American Science Promotion Association and the invitation letter of the scientific journal."

The scientific periodicals belong to the North American Association for the Advancement of Science, which is the world's largest association of science and engineering associations and the world's largest non-profit international science and technology organization.

There are 21 professional branches under it, and the subjects involved include mathematics, physics, chemistry, astronomy, geography, biology and other natural and social sciences.

There are 265 branches and 1000 million members.

Its annual meeting is an important gathering of the scientific community. In recent years, each annual meeting has attracted thousands of scientists and thousands of science journalists.

The platform of North America Science Promotion Association is one of the top scientific platforms in the world.

Because of this, Zhang Yitang recommended Ye Fei to be a review editor for scientific journals.

Become a member of the North America Science Promotion Association, you can get in touch with the world's top scientific scholars.

"Good!" Ye Fei said.

The editor-in-chief smiled and said, "Goodbye, Professor Ye, I hope to have a pleasant cooperation in future work."

"Happy cooperation!"

After speaking, Ye Fei clicked to hang up the video call.

One month later!
Academician Ning's office!

The two were sitting on the sofa drinking tea, and Ye Fei said, "Academician Ning, I've finished reading the materials, so let me share my opinion."

"Okay!" Academician Ning put down his teacup and said, "Go ahead."

Ye Fei pondered for a while and said: "Currently your research plan is to use no carrier pulse scheme, DS-CDMA and MB-OFDM scheme with single carrier pulse."

"These two schemes, in terms of advantages and disadvantages, I prefer the non-carrier pulse scheme."

No carrier, single carrier, and dual carrier.

These three technologies are the three mainstream technologies in current wireless communication, and each has its own advantages and disadvantages.

The reason why Ye Fei chose carrierless is that carrierless has the advantages of low system complexity, low power spectral density of transmitted signals, insensitivity to channel fading, low interception capability, and high positioning accuracy.

Especially suitable for high-speed wireless access in indoor dense multi-path places.

Of course, carrier-free technology is very difficult and requires very high math and communication skills.

Because it does not use a sinusoidal carrier, but uses nanosecond-level non-sinusoidal narrow pulses to transmit data.

At present, there is no research institute in Xiaguo that owns this technology, and the patent must be rented out.

In addition to certain countries in Europe, North America also owns this technology.

Academician Ning nodded and said: "I agree with this. Compared with single carrier and dual carrier, of course no carrier is more suitable."

"But, have you ever thought about it?"

"Our country of Xia doesn't have carrier-free technology, we have to rent the technology from outsiders, but in this way we are restricted by others."

"If they jam our technology, then our Li-Fi won't work."

"You don't forget the Wi-Fi Alliance."

"If we had waited until we released Li-Fi, the Wi-Fi Alliance could have easily made Li-Fi unavailable."

"Therefore, Li-Fi research must be fully domestically produced."

After hearing this, Ye Fei felt very heavy in his heart.

Complete domestic autonomy is easy to say but difficult to do.

In the field of communication, foreign countries are much stronger than Xia Guo.

Whether it's materials or technology.

It is very difficult for Xia Guo to break out of the encirclement.

In particular, the non-carrier is completely domestically produced and independent. Since Xia Guo does not have a non-carrier technology, it is necessary to develop a new non-carrier technology.

After a long time, Ye Fei said: "Academician Ning, then we will develop a new carrier-free technology."

Academician Ning's eyes lit up, and then he said seriously, "Ye Fei, do you know the difficulty of developing new carrier-free technology?"

The new carrier-free technology needs to find a suitable short pulse carrier.

But not all short bursts are suitable for wireless communication.

The short pulse channel that can be easily found has been found long ago.

The short bursts that are not easily found are very difficult to find.

"I know!" Ye Fei said: "But if you don't do it, you will never know whether it will succeed. I believe I can."

Academician Ning nodded and smiled, "What I'm waiting for is your words. I came to you for two purposes."

"The first purpose is to provide short pulse technical support for my previous research."

"The second purpose is to develop a new carrier-free technology, which mainly needs to be developed by you."

"I am very happy for you that you can propose to develop a new carrierless technology."

"We Xiaguo scientific researchers should have the spirit of perseverance. The more difficult we are, the less we can lose."

"That's right." Ye Fei said: "Our countless ancestors told us that we Xia people cannot lose, and we should grit our teeth and persevere no matter how difficult it is."

Academician Ning nodded and said, "Very good!"

Academician Ning likes Ye Fei at this time, he likes such a low-key and tenacious person.

Especially Ye Fei is still young, promising and talented.

After the matter was settled, Academician Ning called a meeting for everyone in the institute!
There are thousands of researchers in the Institute of Wireless Communication Technology, and the meeting place is in a large lecture hall.

Academician Ning and Ye Fei sat on the stage. Academician Ning said, "Everyone, after discussing with Professor Ye, we have decided to change our research direction."

The people below chatted softly with each other for a moment, and it quickly became noisy.

Academician Ning said, "Quiet!"

After the quiet down below, Academician Ning said: "Our previous research direction was to use the single-carrier method, but now we have changed it to the no-carrier method."

"But because we don't have carrierless technology."

"If we want not to be trapped by technology, we must be completely independent and localized."

"So, we're going to develop new carrierless technologies."

"Woo..." the people below exclaimed, and many looked at Academician Ning in disbelief.

Someone stood up and said, "Dean, I object. Many countries have developed carrier-free technology, but how many have succeeded?"

"We can rent non-carrier technology from other countries, first develop Li-Fi, and then consider non-carrier technology."

"We can't even develop Li-Fi, so we want to develop carrier-free technology, so when will we develop Li-Fi?"

"Dean, Li Bo is right. We should develop Li-Fi first, and then consider other technologies."

"Li-Fi is our ultimate goal, and we can borrow other technologies from other countries."

"I don't agree with your point of view. The dean is right. Don't you know the importance of Li-Fi!"

"It's about 5G!"

"Wi-Fi7 can restrict 5G, and Li-Fi can counter Wi-Fi7."

"As long as Li-Fi is developed, neither Wi-Fi7 nor Wi-Fi8 will work."

"Then Li-Fi cannot be technically stuck."

"Therefore, Li-Fi must be completely domestically produced and self-produced."

"What Xiao also said is that we must completely make our own products."

"Do you know how difficult carrierless technology is? We can find a country that has a good relationship with Xia Guo to cooperate with."

"..."

The off-court is like a debate. One side wants to use foreign-leased technology, and the other wants to completely domestically make it.

In fact, both parties are quite right.

Borrowing technology from abroad can save a lot of work and allow Li-Fi to be developed as soon as possible.

But these people only look at the immediate future, not the long-term perspective.

Complete domestic autonomy, although it is very laborious, and may even be developed in the foreseeable future.

But this group of people has a long-term vision and thinks a lot. From the perspective of pros and cons, completely domestic autonomy is more advantageous.

After a long time, Academician Ning said: "Okay, everyone, stop!"

After everyone quieted down, he said, "Everyone, think about the advantages of completely domestic autonomy. If we develop Li-Fi, but get stuck in key technologies, what will happen?"

"Have you ever thought about this?"

"You say to cooperate with countries that have a good relationship with our Xia country. You have to know that there are only interests between countries, and there is no friendship."

"It's better to ask for help than to ask for yourself. On Li-Fi, I insist on complete domestic autonomy, and any core technology cannot be rented from abroad."

Seeing that many people still disagree with Academician Ning, Ye Fei said, "Academician Ning, let me say a few words!"

"Okay!" Academician Ning said, "Professor Ye will say a few words."

Ye Fei smiled and said, "Guys, I'm new here, so I've made some mistakes, and I hope you'll forgive me."

"First of all, I support complete domestic autonomy."

"You all know the advantages of completely domestic autonomy, so I won't say more."

"The most difficult thing to achieve complete domestic autonomy is the non-carrier technology. The dean of this technology's research and development is entrusted to me."

"The research and development of carrier-free technology is mainly to find short-pulse carrier channels through short-pulse technology."

"I have studied short-pulse technology for many years, and I have participated in many national key scientific research projects, most of which are short-pulse technology."

"So, I am very confident in finding the short-pulse carrier."

Seeing that many people did not believe him, Ye Fei said: "How about this, those who want to develop carrier-free technology with me can do research with me, and the rest continue to carry out Li-Fi research and development."

Academician Ning said: "I agree with Professor Ye, since everyone's opinions are not unified, then we will work in groups."

After the meeting, many people came to Ye Fei to report, and they were all people who agreed with complete domestic autonomy.

(End of this chapter)