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1. Violet Guoxin: DRAM future will consider cooperation with the Yangtze River storage;
Set micro-mesh news, Guiguang core on the 26th in the interactive platform, said the company's subsidiary in Xi'an DRAM memory chip design, the current product commissioned by a professional foundry production. The future of the Group under the Yangtze River Storage Group, if the DRAM memory cell manufacturing capacity , The company will consider working with them.
Not long ago, in response to questions from the rapid growth of the memory chip industry and the gross profit margin of Xi'an National Semiconductor Corporation, Turin Vice President Du Linhu and the Board Secretary Nguyen Li Ying, in an interactive Q & A with investment institutions, said that Xi'an Ziguangguo DRAM DRAM chip in the design business, the company itself does not have manufacturing processes, but the DRAM foundries on the market rarely, especially in the period of strong demand in the market, the company due to the smaller, poor production capacity guarantee is not conducive to cost Control.In addition, Xi'an purple core product revenue growth faster income structure has changed, but also to some extent, affected the overall gross profit margin.
Xi'an Ziguangguo core DRAM market with the scarcity of the design team is in the process of 'high-performance fourth-generation DRAM memory chip products' research and development, the fourth generation of larger capacity, higher integration, read and write faster, is expected to begin next year enter the market.
2.AI promote discourse transfer chip design rookie sprang up;
The rapid development of artificial intelligence (AI) applications has brought rigorous testing for processor performance, and many advanced algorithms have brought huge computational load on the processor. How to develop high-efficiency processor chips has become a must for the future of the semiconductor industry On the other hand, some of the teams that were originally engaged in AI research in academic institutions have come out to start their own business.These new faces with high mastery of the relevant algorithms are rapidly introducing chip solutions suitable for the implementation of such algorithms , Become a new force in the semiconductor industry.
Chen Huixin (Chart 3), Director of IP Sales, Cadence Asia Pacific, pointed out that artificial intelligence principles and algorithms have been developed in the academic world for decades and are not strictly new technologies. In recent years, The hot topic, the main processor computing performance across the threshold of demand, so that these algorithms can come in handy in practical use.
However, the core of AI is the algorithm, so the key to how the chip designer develops a SoC that can execute the algorithm most efficiently is the mastery of the algorithm, but algorithms are not the strengths of traditional SoC developers, In China, many chip developers adopt the strategy of finding a partner and make artificial intelligence layout by developing chips for partners familiar with the algorithm.
On the other hand, there are a number of start-ups in the Chinese market who are also involved in the development of related chips, some of which start out as business ventures and software / network companies into the field of chip design. The common characteristic is the high degree of mastery of artificial intelligence algorithms.
In fact, as Chen Huixin observed, in addition to the advantages of using artificial intelligence chips for mobile phones and traditional mobile phone chip factories, the development of artificial intelligence chips in China is relatively fast at present, and most of these new faces are developed. For example, in the Cambrian era, other relatively large-scale Chip developers seem to be still adapt to the changes brought by artificial intelligence.
Overall, the demand for performance is still the most important factor affecting the product development schedule of chip design companies.As mobile devices such as mobile phones are essentially lightweight AI applications, handset chipmakers need to rapidly develop corresponding products and technical challenges Is relatively low.However, if it is other applications that will use the heavyweight AI algorithm, the processor chip on which it is mounted naturally has a relatively high performance requirement and the product development speed will be slower.
At present, the leading artificial intelligence chip companies in China, such as the Cambrian and Huawei, are all Cadence IP authorized customers. In addition to the processor core, some customers also use the high-speed serial / deserializer (SERDES) ) IP. As artificial intelligence will create tremendous data throughput requirements, the need for high-speed interfaces will benefit from artificial intelligence in addition to the processor itself.
3.MIMO research results baked 6G 5G system performance is good
The antenna lab of Sun Yat-sen's Department of Electrical Engineering has published research results at the annual R & S Science and Technology Forum. This research proves that high-dimensional MIMO antenna systems below 6 GHz can achieve multi-Gbit / s performance.
To meet the development guideline of 5G mobile communication system, the transmission rate of mobile terminals must reach 1 Gbit / s at any time, place and individual experience. Currently achievable technologies can be divided into Two are the high-dimension MIMO antenna systems below 6 GHz and the second is the high gain array antenna system in the millimeter-wave band.
Since the wavelength of the millimeter wave band is much shorter than the wavelength below 6 GHz, the decay rate of the energy in the free space is significantly faster, and the signal is easily broken due to poor reception when the user holds the device. These physical limitations are Nowadays, one of the major challenges that must be overcome nowadays is the fact that compared with the millimeter-wave frequency band, the current research of Sun Yat-sen University has verified the feasibility of a high-dimension MIMO antenna system below 6 GHz. The system, no matter in general indoor environment, outdoor environment or user hand Grip and other scenarios, the transmission speed can achieve Multi-Gbit / s performance.
The multi-antenna high-dimension MIMO antenna system developed by Sun Yat-Sen University mainly focuses on 3.4 ~ 3.6GHz test frequency band. On the terminal device, the unit also developed the practical design of handsets 8 and 12 antennas. The conception of the configuration is that at the transmitting end And the receiving end, multiple MIMO antennas are configured, and simultaneous data transmission is performed on at least eight receiving channels.
This combination of 5G antenna system and mobile phone practical design research results show that when the phone built-in MIMO 12 antenna, applied to 12 × 8 MIMO system, 256QAM modulation and 100MHz bandwidth, the measured data throughput of about 3.8 Gbit / s, spectral efficiency of about 38 bps / Hz. The experimental results confirmed that the mobile phone with MIMO multi-antenna, can indeed achieve Multi-Gbit / s transmission rate .Although the user hand dual-frequency MIMO 8 antenna and body block , It will reduce the receiver's octet signal to noise ratio, but at 16 QAM modulation and 100 MHz bandwidth, the 3.5 / 5.8 GHz dual-band throughput can still be up to about 1.8 Gbit / s
The experimental results show that the high-dimensional MIMO antenna system below 6GHz indeed helps to improve the spectral efficiency and significantly improve the data transmission speed, and in the user's hand or body block, the transmission speed can maintain Multi-Gbit / s The performance, and thus will be very potential to achieve the target of 5G technology