Rebirth: Starting from Lighting Up the Tech Tree

Chapter 74 Dimensional Reduction Attack

"In the third phase of Sky Dome, the number of terminals will increase from 20,000 to 100,000. This is a quantitative change, but quantitative change will lead to qualitative change." Zuo Cheng stood on the podium, his voice steady and powerful. "In a scenario with 100,000 terminals, the question for a centralized architecture isn't whether it can hold up, but when it will."

He pressed the remote control, and the PowerPoint presentation turned to the next page. A comparison chart appeared on the screen: the left side showed the load curve for a centralized architecture, and the right side showed the load curve for a distributed architecture. As the number of terminals increased, the curve on the left rose sharply, while the curve on the right remained stable.

"Our solution employs a distributed processing architecture, where each satellite node is an independent computing unit. When a node becomes overloaded, the system automatically transfers tasks to nodes with lower loads. This design ensures stable operation of the system at any scale, eliminating computational bottlenecks."

Zuo Cheng paused, glancing at the judges' panel. Lin Jianhua's expression remained unchanged, but his fingers tightened around his pen.

"Next, my colleague Ma Hao will explain the adaptive encoding modulation scheme."

Zuo Cheng stepped back, and Ma Hao walked onto the podium.

"Good morning, judges. I'm Ma Hao, an algorithm engineer from 402 Technology." His voice was steady. "Adaptive coding and modulation is the core technology of the third phase of Sky Dome, directly determining the upper limit of spectral efficiency."

He opened the PowerPoint presentation, and a set of comparative data appeared on the screen.

"CEFC just announced a spectral efficiency of 3.2 bits per hertz, which is an industry-leading level for traditional adaptive coding modulation. Our solution achieves a spectral efficiency of 3.9 bits per hertz."

Someone in the room took a soft breath.

"How did you arrive at this number?" Ma Hao continued, "Traditional methods use fixed rule tables to adjust parameters, while our solution introduces machine learning, allowing the system to learn and optimize autonomously. Simultaneously, we added a channel prediction mechanism, enabling the system to anticipate channel change trends and select the optimal modulation and coding scheme. The combination of these two approaches resulted in a 23% improvement in spectral efficiency in actual measurements."

Zuo Cheng stood aside, fully aware that this channel prediction mechanism was the core technological advantage brought about by the fusion blades. However, in his presentation, it was merely an innovative algorithm design, and no one would associate it with a technology tree system.

Ma Hao presented the measured data from the second phase of the Sky Dome project, with the numbers on the graph clearly displayed.

"This is not simulation data; it's actual data measured by Blue Bay Communications. The Sky Dome Phase II acceptance score was 94 points, and the acceptance report bears Blue Bay Communications' official seal."

After Ma Hao finished speaking, Zuo Cheng returned to the podium.

"Let me add something," he said. "Huaxin's solution emphasizes technological maturity and delivery assurance. Let me respond. In the second phase of Sky Dome, 402 Technology's 11-person team achieved a score of 94. What did Huaxin's 100-person team accomplish? Fewer people isn't a disadvantage, it's an efficiency advantage. Which is more trustworthy: 11 people achieving 94 points, or 100 people achieving 80 points?"

Some of the judges nodded.

The Q&A session has begun.

"Mr. Zuo, how do you ensure that your distributed architecture does not crash in extreme scenarios, such as widespread satellite failures?" asked a technical expert from Blue Bay Communications.

"Each satellite node has independent computing and communication capabilities. Even if some satellites fail, the remaining nodes can automatically reorganize the network, ensuring uninterrupted core services. We have a complete disaster recovery plan, which can be viewed on page 37 of the PPT."

"Your machine learning algorithms require a lot of training data. Where does this data come from?"

"The second phase of the Sky Dome system has accumulated a large amount of channel measurement data, sufficient to support model training. Furthermore, the model will continue to learn itself after deployment, and its performance will improve the longer it runs."

Lu Mingyuan looked at Lin Jianhua: "Mr. Lin, do you have a question?"

Lin Jianhua put down his pen and looked sharply at Zuo Cheng.

"Mr. Zuo, your adaptive coding and modulation scheme has a spectral efficiency of 3.9 bits per hertz. Under what conditions was this data measured?"

"The actual test environment of the second phase of the Sky Dome, the standard channel model," Zuo Cheng replied calmly.

"Standard channel model?" Lin Jianhua's lips curled slightly. "But real-world applications are far more complex than standard channels. Under extreme conditions such as high-speed movement, multipath fading, and electromagnetic interference, can your data still be preserved?"

"Yes," Zuo Cheng said. "Our solution has already been tested and verified in the second phase of Sky Dome, including high-speed movement scenarios. The acceptance report can prove it."

"The acceptance report was provided by Blue Bay Communications," Lin Jianhua said with a hint of disdain. "The evaluation from a company you have a cooperative relationship with raises questions about its impartiality."

The room fell silent for a moment.

Zuo Cheng remained calm as he looked at Lin Jianhua.

"Mr. Lin, Blue Bay Communications is the largest satellite communications company in China, and the Sky Dome project is a key national project. The impartiality of the acceptance report is not guaranteed by me, but by Blue Bay Communications' reputation and the national audit. If Mr. Lin has any questions about Blue Bay Communications' review system, he can contact Blue Bay Communications or the State Administration of Science, Technology and Industry for National Defense."

Lin Jianhua's expression changed.

He didn't press the matter further. He knew that continuing to argue about the impartiality of the acceptance report would be tantamount to questioning Blue Bay Communications' professionalism, since half of the judges present were from Blue Bay, and doing so would only backfire.

After the Q&A session, Lu Mingyuan announced the end of the bidding presentations, and that the judges would conduct a closed-door review and announce the results at a later date.

Zuo Cheng stepped down from the podium, and the team members all looked somewhat excited.

"Brother Cheng, the part where you replied to Lin Jianhua just now was so cool!" Zhang Lei said in a low voice.

"Don't be too happy yet," Zuo Cheng said. "The results aren't out yet."

But he knew in his heart that they had already won today's presentation. The technical data was overwhelming, the acceptance report endorsed their claim, and Lin Jianhua's doubts were immediately dispelled. Unless something unexpected happened during the closed-door review by the judges, 402's victory was virtually a foregone conclusion.

As I stepped out of the Blue Bay Communications Building, the Hangzhou sun was shining brightly. Yu Ying sent me a message: "How was it?"

Zuo Cheng replied with a single word: "Stable."

Chen Hao walked beside him, adjusting his glasses: "Brother Cheng, do you think Lin Jianhua might pull something during the closed-door review?"

"He has a veto power, but given the situation today, using it would be tantamount to admitting he's biased towards Huaxin," Zuo Cheng said. "The other six judges aren't stupid; the technical gap is obvious. If he forcefully vetoes, he'll be putting himself in opposition to everyone else."

"Then it's settled." Chen Hao smiled, a rare occurrence for him.

Zuo Cheng shook his head: "Let's wait for the results."

He glanced back at the Blue Bay Communications building. Lin Jianhua was talking quietly with Zhao Guangming, his face ashen.