I. channel coding
The representative of domestic 5G technology must be Huawei, and the 5G channel coding technology promoted by China is polarization code, which is the only channel coding method that can strictly prove to reach Shannon limit in theory. This coding method was first proposed by Turkish Professor Arikan in 2008, and the LDPC code popularized in the United States is a coding method very close to the Shannon limit. This coding method was put forward by Professor Robert Gallager, the tutor of Professor Arikan, in his doctoral thesis 1963. Theoretically, polarization code is superior to LDPC code, but it needs more time to improve because of its short development time. After two heated discussions on 20 16, the LDPC code and polarization code are finally divided into two parts in the 5G eMBB scenario. But polarization code has more potential in the future development, so the market of polarization code will be wider and wider in the future!
Second, the base station
5G technology cannot be separated from base stations, which can be built on the basis of 4G base stations. Then we can compare the number of base stations. At present, there are 3.5 million 4G base stations in China and only 300,000 in the United States. The difference in the number of base stations cannot be built quickly in a year or two. I still remember many reports in previous years that many subways in Europe are full of people who read newspapers and like to learn. In fact, before domestic communication equipment companies entered, there was no signal on the subway. Now, just like on the subway in China, people are holding mobile phones or plugging in headphones, so in terms of infrastructure, China is at the leading level.
Third, the chip
In the field of chips, Qualcomm and Apple have always been in a dominant position. Up to now, Huawei Hisilicon and Ziguang Zhanrui have been able to enter the top ten chip design companies in the world. The processors used by Xiaomi, oppo and vivo are all imported. China imports 654.38+050 billion dollars of chips every year, so China still has a long way to go in this field. Although HiSilicon's Kirin 990 5G chip can now rank fourth in the field of high-end chips in terms of performance, China is still at a relatively backward level in the field of chips, especially in the field of high-end chips. At present, China has increased its investment in this field, and I believe it will soon enter the leading level!
Based on the above situation, I personally think that China's 5G technology is at the leading level in the world!