Luo Jia and Li Moran, who came to Shenzhen, were greeted by all the senior executives of Huawei, and they took a business car to the headquarters of HiSilicon Group.

In the field of semiconductors, there are not many companies in China that can come up with it, and HiSilicon is a chip design company, which does not produce chips themselves, but only designs chips, and currently ranks fourth or fifth in the world.

The well-known Kirin series of mobile phone SOCs and the Barong series of communication basebands are all proud works of HiSilicon.

In China, there are no companies that can wrestle with HiSilicon, and although UNISOC ranks second, the gap is still not small, and the annual sales are only half of HiSilicon's.

Internationally, HiSilicon's biggest opponent is the well-known Qualcomm, and in the past decade, HiSilicon and Qualcomm have been fighting fiercely, and the results have been winning and losing each other, and no one has suffered or taken advantage.

Judging from HiSilicon's strong performance, it is by no means an exaggeration to say that HiSilicon is the light of China's semiconductor design field.

"Please!"

Mr. Yu made a gesture of invitation, and Luo Jia followed him and other high-level executives from Huawei to a conference room.

It is worth mentioning that HiSilicon, as the largest semiconductor design company in China, is at the helm of a very intellectual lady, which is rare in the semiconductor field, compared to Xingchen Technology, which is too masculine.

After Luo Jia sat down, more than 100 people came in from outside, and Mr. He said that these people were all HiSilicon's main engineers and technical experts.

Mr. Ren took a sip of tea and said to Luo Jia, "Mr. Luo, everyone is here, let's start immediately, I have someone prepare lunch, and I will eat here." ”

Luo Jia smiled, it was really an old friend, Mr. Ren really didn't treat himself as an outsider, he didn't even invite a meal, and directly changed to a working meal.

However, this is also in line with Luo Jia's character, politeness is not necessary, and it is better for everyone to get straight to the point.

He nodded to Li Moran, so Li Moran walked to the front desk with the notebook he brought with him, and the staff helped him connect to the projector.

Li Moran cleared his throat and said in a deep voice: "Now, let me introduce to you the latest EDA industrial software developed by Xingchen Technology."

Li Moran stood on the stage and said seriously, it was more appropriate for Fang Yuanchu of the semiconductor department to do this work, but the large-scale testing of industrial software is inseparable from Fang Yuanchu, so Li Moran had to do it for him.

"I know that HiSilicon is a company that mainly designs communication chips, so we have added a new generation of emulators to Xingchen EDA." Li Moran is not known for speaking fast like Enron, he said in an unhurried voice: "Our simulator has six characteristics. ”

"First, the protection interval, the multipath channel will affect the OFDM and destroy the positive interaction between the subcarriers, and we insert the protection interval in the simulator to eliminate the inter-symbol interference caused by the multipath channel, which is commonly known as the ISI impact factor."

"There are two insertion methods for the protection interval we designed, one is to fill zero, which automatically fills 0 in the protection interval, and the other is to insert a circular prefix or a circular suffix to achieve the circular expansion of OFDM."

"The inter-carrier interference generated in the protection interval, that is, ICI, we creatively use the CP technology, CP is to copy the sample at the back of the OFDM to the front, and the length of each symbol is Tsym=Tsub+Tcp"

The emulator is used for hardware debugging, you can see the execution of each step of the program in the hardware, it is an extremely important tool in the whole set of EDA software, and there are different emulator designs for the characteristics of different fields.

When Li Moran finished introducing the protective interval measures of the simulator, the engineers in the back row of the conference room burst into warm applause.

"Great, this protection interval is a genius design!"

"With the protection interval, we can speed up the development process and reduce bugs!"

"I didn't think of copying the rear sampling of the OFDM to the front to eliminate carrier interference!"

"What's so strange about this, do you know Wei Jianing? The chief technical consultant of Cadence was tapped to Xingchen Technology two years ago, in addition to Bai Xianyong, Zheng Lin, Tao Tao, anyway, the big Chinese who study industrial software, all of them are now working in the software center of Xingchen Technology. ”

"That's right! I heard that in order to assemble the world's strongest development team, Xingchen Technology spent old money just to pay liquidated damages to employees, and it was almost smashed out with money. ”

The chip development engineers have been completely sensational, Xingchen Technology has done a lot of work in order to reduce the difficulty of IC development, various protection mechanisms are just one of them, and their most famous auxiliary artificial intelligence, the second generation of Little Star, that is the real killer feature.

And Mr. Yu, Mr. Ren and others looked confused, for them, this thing was a bit too professional.

Next, Li Moran introduced the second important innovation of the simulator, channel error correction technology.

The two vice presidents of Xingchen Technology, two completely different styles.

An Ran is like a high-speed machine gun, I can't wait to finish all 10,000 problems in one minute, listen to him talk about technology, and I have to devote 200 percent of my energy, otherwise I can't keep up with his train of thought at all.

And Li Moran is like a pot of tea, he is like telling a story, using a slow voice, telling a question, digging deeper, tirelessly, trying to make everyone present understand.

When Li Moran finished talking about the problem of channel error correction, Luo Jia glanced at the time and found that it was already one o'clock in the afternoon.

With a simulator alone, he spent less than one-fifth of the time in two hours.

Glancing at Mr. Yu out of the corner of his eye, it seemed that his old man was already a little unable to sit still, but where did this go?

What is industrial software?

It's the world's most complex software system!

In addition to the emulator module, Centron EDA is composed of hundreds of modules such as code checking, digital analog IP/VIP, synthesis tools, DFT, PR, DRC, layout, OPC and so on.

The emulator module alone involves nodes, buffers, variables, network topology, MAIN functions, updateInterval definitions, various datasets, routing, source code understanding messages, message generators, and message queues.

Anyway, for those who haven't worked on industrial software, it's a fantasy.

Xingchen Technology has always implemented a crack policy, but in order to complete industrial software, Luo Jia has set up a huge development team of nearly 20,000 people, and frantically poached people from all over the world, which shows that the difficulty of industrial software development is absolutely perverted.

When Li Moran was about to talk about the pilot assist system, Luo Jia raised his hand and motioned for Li Moran to stop for a while.

"Mr. Ren, EDA is a huge set of software, and we have made a lot of innovations in this software, if you really want to talk about it, I'm afraid it won't be able to finish it in three days and three nights." Luo Jia said, "I don't think so, practice is the only criterion to test the truth, HiSilicon here will use our development version first, and if you have any questions, you can communicate with us at any time." ”

"No problem!"

Mr. Ren had already been suffocated, and he hurriedly agreed to Luo Jia's plan.

So Li Moran walked down from the podium, shrugged his shoulders and said to Luo Jia, "Is it that I am speaking too slowly." ”

Luo Jia smiled, "It's not that you're too slow, it's that EDA is too complicated, even if you change to An Ran, I'm afraid he will have to talk about it for a week." ”

Mr. Ren immediately announced the dismissal of the meeting, and he told Mr. He of HiSilicon to immediately organize manpower to conduct a comprehensive test of Xingchen Technology's EDA software.

"If this software can really replace Cadence's tools, don't hesitate to change it now!" Mr. Ren said in a deep voice.

Turning around, Mr. Ren said to Luo Jia and Li Moran again, "Leave it to Lao He here, you two come with me, let's have a drink!" ”

Luo Jiahu was suspicious, "I heard that you seem to have been taboo from alcohol." ”

"Whatever." Mr. Ren waved his hand, "EDA tools are the lifeblood of semiconductors, you have solved the problem of EDA, and eliminated the biggest hidden danger for the domestic semiconductor industry, this is great news, I am happy to drink it today!" ”