Technological Hegemony

Luo Jia and Li Moran, who came to Shenzhen City, were grandly welcomed by all the senior management of Huawei. They took a commercial vehicle to the headquarters of HiSilicon Group.

In the field of semiconductors, there are not many companies in our country that can be used to compete. HiSilicon is a chip design company. They do not produce chips themselves, but only design chips. They are currently ranked fourth or fifth in the world.

The mobile phone SOC Kirin series and the communication baseband Balong series that we are familiar with are all the proud works of HiSilicon.

In China, there are no companies that can compete with HiSilicon. Although Ziguang Zhanrui ranks second, the gap is still not small, and the annual sales are only half of HiSilicon.

Internationally, HiSilicon’s biggest rival is the well-known Qualcomm. In the past ten years, HiSilicon and Qualcomm have been fighting in full swing. As a result, each other wins and loses, and no one suffers or takes advantage.

Judging from the various powerful performances of HiSilicon, it is no exaggeration to say that HiSilicon is the light in the field of semiconductor design in China.

"Please!"

Mr. Yu made a gesture of invitation, and Luo Jia followed him and Huawei's senior management to a conference room.

It is worth mentioning that HiSilicon, as the largest semiconductor design company in China, is headed by a very intellectual lady, which is rare in the semiconductor field. In comparison, Star Technology seems too masculine.

The meeting room is very large. After Luo Jia sat down, more than a hundred people came in from outside. Mr. He introduced that these people are the main engineers of HiSilicon and experts in technology.

Mr. Ren took a sip of tea and said to Luo Jia, "Mr. Luo, everyone is here. Let's start right away. I have someone prepare lunch. Let's eat here."

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

But this is also in line with Luo Jia's character, there is no need to be polite, 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 earnestly. Originally, this work should be done by Fang Yuanchu from the semiconductor department.

However, 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 Star EDA." Li Moran is not known for speaking fast like An Ran. Speech Speed ​​said: "Our emulator has six characteristics."

"First, the guard interval, the multipath channel will affect OFDM and destroy the positive interaction between subcarriers, and we insert the guard interval in the simulator to eliminate the intersymbol interference caused by the multipath channel, which is commonly known as ISI Impact Factor."

"The guard interval we designed has two insertion methods, one is zero padding, which automatically fills 0 in the guard interval, and the other is inserting a cyclic prefix or cyclic suffix to realize the cyclic extension of OFDM."

"The inter-carrier interference generated within the guard interval, that is, ICI, we creatively used CP technology. CP copies the samples from the back of OFDM to the front. 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. There are different emulator designs for the characteristics of different fields.

After Li Moran introduced the protective distance measures of the emulator, the engineers in the back row of the conference room burst into applause.

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

"With the guard interval, we can speed up the progress of development and reduce bugs!"

"Copy the back sampling of OFDM to the front to eliminate carrier interference, why didn't I think of it!"

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

"Yes! I heard that in order to assemble the strongest development team in the world, Star Technology spent old money just to pay the liquidated damages of the employees. It was almost out of money."

The chip development engineers were completely sensational. In order to reduce the difficulty of IC development, Xingchen Technology has done a lot of work. Various protection mechanisms are just one of them. There is also their most famous auxiliary artificial intelligence, the second generation of small stars, that is The real killer feature.

On the other hand, Mr. Yu, Mr. Ren and the others looked confused. For them, this thing was a bit too professional.

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

The two vice presidents of Star Technology have two completely different styles.

An Ran is like a high-speed cannon, wishing he could finish all 10,000 questions in one minute, listening to him talk about technology, you have to devote 200% of your energy, otherwise you won't be able to keep up with his train of thought.

Li Moran, on the other hand, is like a pot of clear tea. He speaks in a slow voice like a storyteller. A question must be explained in detail, digging deep, and taking the trouble to try to make everyone present understand it.

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

Just one emulator, he spent two hours, and he only talked about one-fifth of it.

Glancing at Mr. Yu out of the corner of his eye, it seemed that the old man couldn't sit still anymore, but where did he go?

What is industrial software?

It is the most complex software system in the world!

In addition to the emulator module, the EDA of Star Technology is composed of hundreds of modules such as code checking, digital simulation IP/VIP, comprehensive tools, DFT, PR, DRC, layout, OPC, etc.

But only the emulator module involves nodes, buffers, variables, network topology, MAIN function, updateInterval definition, various data sets, routing, source code understanding messages, message generators, and message queues.

Anyway, let's put it this way, for those who have never done industrial software, this is a fantasy.

Star Technology has always implemented a policy of elite soldiers. However, in order to complete the industrial software, Luo Jia established a huge development team of nearly 20,000 people, and frantically poached people from all over the world. It can be seen that the difficulty of industrial software development is absolutely abnormal.

When Li Moran was about to talk about the pilot auxiliary system, Luo Jia raised his hand to signal 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 we really want to talk about it, I'm afraid it won't be finished in three days and three nights." Luo Jia said, "I don't think it's better than this , Practice is the only criterion for testing truth, HiSilicon first uses our development version, and if you have any questions, feel free to communicate with us.”

"no problem!"

Mr. Ren was suffocated a long time ago, and he hastily agreed to Luo Jia's plan.

So Li Moran walked down from the podium, shrugged his shoulders and said to Luo Jia, "Did I speak too slowly?"

Luo Jia smiled, "It's not that you are too slow, but that EDA is too complicated. Even if An Ran came, he might have to talk for a week."

Mr. Ren immediately announced the adjournment of the meeting. He told HiSilicon's Mr. He to immediately organize manpower to conduct a comprehensive test on the EDA software of Star Technology.

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

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

Luo Jia was suspicious, "I heard that you seem to have stopped drinking."

"Whatever." Mr. Ren waved his hand, "EDA tools are the lifeblood of semiconductors. You have solved the EDA problem and eliminated the biggest hidden danger for the domestic semiconductor industry. This is great news. I will drink it today." I am also happy to get down!" Remember the website address of this site, www. biquxu. Com, convenient for reading next time, or Baidu input " ", you can enter this site