Chapter 271 Optimization
The white coats in the research room looked at Lu Yao with a confused look.
If it weren't for knowing in advance that Huang Feng, the teacher of Gaoyan, would have led his junior brothers and sisters over, these people might have staged a slap in the face "Who are you, what are you talking nonsense here?"
But the reality is not a novel after all. Huang Feng himself is the Gaoyan who is in charge of this research department. He is their boss and his brother. It is a relationship of one's clothes and water. Everyone can only treat it politely and will definitely not jump out of the face-slap plot.
Although the research department is engaged in research, it also needs to have human feelings and worldly styles.
No one is a fool.
But the problem is that although it doesn't mean it explicitly on the surface, the eyes of these people are full of something wrong now.
Looking at Lu Yao, Huang Feng, and Professor Sun...
Then he muttered in his heart: Who is this person?
Oh yes, Brother Huang seems to have said that this is his junior brother, the top scorer in the college entrance examination last year.
It seems to be playing a band.
But...will it be a bit outrageous?
This guy.
After reading our research data in less than ten minutes, you found something that can be optimized?
No need to test machine, no need to run data, no need to open your mouth, do you optimize it?
If you can really optimize... we people should have really been optimized.
They thought, speechless.
Huang Feng was speechless.
Although I learned about this junior brother’s genius from the teacher... but can you not be so outrageous?
What are you doing... The research results that are so easy to produce need to be optimized?
What can you optimize?
And the most curious one is Sun Liqiang:
"Where did you see the problem?"
"Here."
Lu Yao pointed to an icon on the picture.
"This bidirectional wireless transmission system is connected to analyze the chip report. Look, the RAM/FIFO has an occupancy rate of up to 70%. What does it mean? It means that a large amount of memory is occupied. The occupancy rate of 70% is not enough space for later development modules. Moreover, in the following module analysis and testing, in the baseband module occupancy units, the information channel decoding is 6% occupancy rate, and the three modems and demodulations of QAM, OFDM, and MIMO are only 26, and the channel estimate is 12, and the result is that the synchronization at the bottom is as high as 24%. What does this mean?"
He glanced at Huang Feng.
Huang Feng replied inexplicably:
"The memory unit occupies 24%, which means that the module occupies a large amount of memory space. And... is more than multiples of other units."
“…”
Lu Yao was speechless.
I thought that these things were all on the surface, so I need to ask you?
He said:
"Senior brother is right... But what I want to say is that this data shows that there is a 1024-point correlation between the synchronization module when designing and implementing, and the complex multiplication and complex adders it occupies must be problematic. Your module must have performed a large amount of meaningless complex multiplication and addition, and consumed a lot of logical resources during the implementation process. The synchronization module can occupy such a large hardware logic dimension, so your subsequent development will definitely have problems because there is not enough space for you."
“…”
Huang Feng frowned slightly.
In fact, to be honest, this is the test result that the laboratory just got yesterday. This achievement in LTE transmission baseband is the latest. And his original intention today is to let the teacher take a look and prove his abilities.
To be honest... At present, this LTE two-way transmission system is already a very excellent system at least within HiSilicon. If nothing unexpected happens, it may be put on your phone next year to run.
This is the disciple's achievements and a "gift" to the teacher.
But who knows...
At this time, Sun Liqiang asked:
"What do you think you should do?"
Lu Yao glanced at him and shrugged:
"Simple, optimization. The 1024-point mutual correlation detection used by the senior brothers and others. This data shows that it consumes too much hardware resources. Then optimize it. First use the 1024-point mutual correlation detection to get as much data as possible, and then perform 64-point mutual correlation detection to cut off unnecessary hardware resources, reduce storage space, and improve utilization. This is an inevitable step. And if it were me... well, I'll think about it."
After a little thought, he continued:
"I will first see if the wireless frame of the PSS sequence can find the detection position when designing the wireless frame, and then apply R (I+M) as the received link signal and S (M) as the locally stored PSS time domain conjugated sequence. Of course, we must consider the impact of the signal when it is transmitted in different channels and conduct further detection. After obtaining the normalization, set the window energy, and then use three sets of local PSS sequences to process each other in the time domain in the LTE system, slide and intercorrelate with the received link signal, obtain the set and calculate it, find the synchronization sequence of the maximum cross-correlation value, and determine the starting position. This is the detection sequence."
“…”
“…”
“…”
Unconsciously, everyone had already fallen into thinking as he spoke.
Just listened to him continue:
"As for the next optimization of the cross-correlation algorithm, when we perform traditional cross-correlation detection processing, the frequency domain usually uses the middle 1.08MHZ. But when I look at these data, I estimate that the system bandwidth of 10MHZ performs 1024 cross-correlation detection, the calculation amount is too large, so I have to work hard on the frequency domain to see how many signal points to be processed can be obtained, and then use the smallest FFT calculation possible. The next step is to simulate the calculation results, complete the peak detection, obtain the power and loss of the signal, and within what interval can it not affect the subsequent module work, and then make improvements. As long as the peak detection is completed, the calculation amount will definitely be reduced, saving hardware resources for the implementation process. It's that simple."
“…”
Now, even Sun Liqiang couldn't hold back.
It's that simple?
It's simple!
Although... his eyes gradually turned into amazement.
But my disciple's words are wrong.
This life... is really not simple at all.
The calculation amount involved is particularly huge, definitely astronomical.
But Huawei must have its own supercomputer, so...it doesn't seem difficult.
But then again...
Actually, what the disciple said is correct.
Because he has solved the difficulties in the transmission optimization of LTE baseband in this place...
The synchronization module occupies too much memory.
But there are too many things to consider for optimization... People with different ideas need to make different attempts in order to explore and optimize them little by little.
This is the most difficult one.
What should I start from? Which one should be sacrificed? Which one should I choose?
This is the most difficult one.
And now... the most difficult part is that it can be solved in just a few minutes by my disciples.
Although the experimental results were not obtained, it was impossible to prove that what Lu Yao said was right.
But for now...
Sun Liqiang found that this method is the safest and most pertinent.
No other modules will be sacrificed too much, and even detection methods and optimization solutions are available.
If this optimization job takes at least 6 months, then follow this method and at least 3 months can be saved by the team before the result of the test results cannot confirm that the route is correct.
The reason was no different, and the disciple planted a tree himself.
Although I don’t know if I can live, the roots and torso of this tree are all there.
He completed the most difficult basic work from an outrageous perspective in a short period of time. Others just need to follow his ideas to do experiments, get data, and verify.
If the verification is successful, the tree will survive.
If the verification is not successful, at least they have obtained a series of detailed data, which has laid the foundation for subsequent improvements!
If we use money, assuming that the optimization solution of this LTE two-way transmission system costs one million, then... the words of a disciple have saved them at least 600,000, or even more.
"Tsk."
Inexplicably, Sun Liqiang suddenly sighed.
Then he took the plan from Lu Yao and handed it to Huang Feng:
"Let's go as your junior brother said. I agree with the optimization plan he proposed. At present, it should be correct. Do preliminary tests and demonstrations first, and then optimize."
"Uh..."
Huang Feng's eyes that looked like monsters slowly faded away, and instead agreed:
"Okay, teacher."
After saying that, he glanced at Lu Yao again...
Not sure what it means.
It's just that it's full of incredible.
This person...
What is it?
...
"Lu Yao."
Inside the coffee BAR of HiSilicon.
Sun Liqiang looked at the disciple who was walking back with coffee and suddenly asked:
"Do you want to come here to work?"
Bai Yao's mouth twitched.
But the next second Lu Yao shook his head without hesitation:
"Don't want to."
"Uh..."
Sun Liqiang was a little stunned for a moment.
But Bai Yao felt relieved in her heart instantly.
Just heard Lu Yao say:
"I want to stay in the school. Director Li told me about this two days ago. Mainly... My research is now confidential. When the verification is successful next year, the school will let me join. I want to go the same path as your teacher, do scientific research... and develop scientific research for the company. I think the concept is still different. I think what you are like is my ultimate goal."
“…”
Inexplicably, Sun Liqiang felt warm in his heart.
No...
Why does this sound so comfortable?
Just... feel comfortable no matter how you think.
In fact, he asked this question purely for curiosity, curious about how his disciples want to move forward in the future.
Should we go to the academic field or business field?
Although the two are in a relationship of being inseparable from Meng Meng, the focus is still different.
When he heard the disciple say this, he felt relieved.
As for Lu Yao, he actually didn't tell any lies. He really doesn't like Huang Feng and his laboratory, where the company has assigned tasks to them and they carry out research and development work.
Although their wages are quite high.
But... money is never a real problem with yourself. If he lives for a lifetime, he naturally has to choose what he is more interested in and likes more.
Doing research cannot be too commercial.
It's just right for mentors.
Working in a school and affiliated with a company, you can make a lot of money, but you are also more free in terms of research types.
It's the most comfortable way he thinks.
...
After staying at Huawei at around 4 o'clock, Sun Liqiang took the two of them away.
There was also a dinner with Huang Feng and several other senior brothers who served in the evening.
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This time, Sun Li forced Lu Yao and the others to come, or to lead Lu Yao to come, mainly to let the brothers know each other.
Now, this junior brother may have some things to bother these junior brothers, but in the future, he firmly believes that other disciples must be troubled by the younger brothers.
And at this time, naturally everyone should have a good relationship.
So, the three of them returned to the hotel and stayed until the evening. Seven or eight brothers got off work, and Lu Yao could see the mentor's team at HiSili.
Not to mention... it's really good.
The brothers who attended tonight were all HiSGKA responsible for various departments.
Among them, Huang Feng should have the highest status. After all, LTE baseband is a very important technology in the 4G mobile phone era, and other brothers are actually not bad at all. Everyone has a bright future.
The ones I drank on the dining table were Maotai, and the food was full of Shenzhen City characteristics.
After Lu Yao had two taels of wine, he became numb.
In the end, I didn’t even know how I came back. But when I woke up in my senior sister’s arms on Wednesday, he found that there was a group of people in his phone...
On Wednesday, Sun Liqiang took the two of them to meet another group of people.
Like him, special professors who have made achievements in semiconductor technology.
However, the meeting time was very short, and everyone just had a lunch and went their separate ways.
Lu Yao didn't ask if these people were from the center laboratory. There was no need. After all, HiSilicon was top secret on the list of these special professors. This is for corporate security...but in a few years, it is for national security.
He was not in a hurry either.
He must have a hand in Kirin chip.
At that time... everyone will definitely be with each other.
Don't worry.
After staying in Shenzhen for a day and a half, we went back to the Magic City together on Wednesday afternoon.
When they parted at the airport, Sun Liqiang asked Lu Yao to write down the report on VIVANTE and send it to him.
And he will also give him some parameters for him to check.
After Lu Yao nodded and agreed, he bid farewell to the tutor and returned to school with his senior sister.
As a result, at night, I received a call from Huang Feng.
"Hey, junior brother, are you busy now?"
"I'm not busy, senior brother, what's the matter to come to me?"
He asked at the senior sister who was putting black stockings on her legs.
Not to mention... the senior sister with a tall and long legs is really powerful when wearing black stockings.
Attack to the extreme.
No wonder girls like it so much...
"That's right. Today we have submitted the two-way transmission system optimization plan for LTE. It is estimated that... it will be approved in just ten days and half a month. At that time, I will definitely be troubled by my junior brother..."
"Haha, senior brother, these words are just heretics."
After slapped the senior sister's hand, he pointed to the phone speechlessly, and then said:
"If you need any help, senior brother, just contact me at any time."
"Ha, that's fine. And... I actually mentioned it in the report, saying that this is the optimization idea you provided. Did the teacher get you a guest card?"
"You said that temporary worker card?"
"Yes."
"It's done."
"Well, then your information should be available in Huawei. In this optimization project, your name is also there. After passing, the company will definitely contact you and the tutor... There will definitely be a reward."
"Senior brother, these words...uh..."
He looked at the senior sister squatting in front of him speechlessly and took a few steps back speechlessly.
Bai Yao smiled proudly and began to climb forward.
Then he grabbed his hand and held it, making him hook the lace collar hanging around his neck.
It's like... he's holding a pet.
In an instant, Lu Yao became a little red and warm.
"What's wrong?"
Huang Feng asked.
"It's okay, senior brother, we don't have to be so polite."
"That's not OK. You are my junior brother, so you can't let you suffer a loss. Don't think that this is a slight effort. Junior brother, we rely on our brains to make a living, right? I'm still afraid that the company will give you too low..."
"Hiss~"
"...It's not that it's not that, don't suck in the cold air. Haha."
Huang Feng thought he was surprised because of "money".
Little did I know that Lu Yao had already sat on the sofa now, and the reason why he was taking a deep breath was because his senior sister was urging him...
He was distracted for a while and she was a little impatient.
Seeing this, Lu Yao was speechless and put his hand on the senior sister's cheek and rubbed unconsciously:
"Anyway, when you need help, senior brother, just say it. I'm sure there is no problem."
"Ha, that's good. When you come to Shenzhen City, I'll take you back with you with great care!"
"Don't you see me that day?"
"Hahaha, don't worry, I won't drink too much this time, but it will definitely make you linger. Hahaha~"
Sometimes... men's tacit understanding is quite terrifying.
Lu Yao suddenly understood what he was going to do.
There is a tacit understanding that can only be understood but not expressed in words.
Can't help but smile and said:
"Then you can't tell the tutor."
"Hahahaha..."
Huang Feng said with a smile:
"Okay, that's it. When the project is over, I'll tell you in advance."
"Yeah, okay. Then I'm dead?"
"Well, I'll have a break early and I'm dead."
"Okay."
Beep.
The phone hangs up.
He threw his phone aside, tilted his head to the sofa, and narrowed his eyes.
At this time, I heard from my senior sister:
"You told the tutor to bring me with you for this project. But I won't get involved with your affairs, or you can just divide me into a small topic... If you go to Shenzhen City, I will follow it. It's better to choose Friday and Saturday."
“…Why?”
Lu Yao himself did not intend to leave her behind.
"Because you usually go to Xu Ruochu starting on Friday. But if you are on a business trip, from Monday to Sunday, you are all mine!"
“…”
Lu Yao opened his eyes, closed his head, looked at her, and asked speechlessly:
"Why are you getting more and more jealous recently?"
"Because I like you more and more..."
Her blurred eyes were full of possessiveness:
"Seven days a week, 24 hours a day... I want to be with you every day."
"...Your eyes are quite scary."
"Is that true?"
A hint of rosy appeared on that naturally cold face.
He put Lu Yao's hand that rubbed his cheek on his own initiative and put it on his head.
Then it pressed down slightly.
That was to remind Lu Yao.
Remind him, use force.
Tsk.
Lu Yao narrowed his eyes again.
What a crazy critic...
He said to himself.
(This chapter ends)