点击查看[《2021WAIC-参赛指南中文版》]( https://s3.cn-north-1.amazonaws.com.cn/files.datafountain.cn/uploads/images/competitions/505/2021WAIC-%E5%8F%82%E8%B5%9B%E6%8C%87%E5%8D%97%E4%B8%AD%E6%96%87%E7%89%88-617241.pdf)[《2021WAIC-Competition Guide》]( https://s3.cn-north-1.amazonaws.com.cn/files.datafountain.cn/uploads/images/competitions/505/2021WAIC-Competition%20Guide-491840.pdf) #### Competition Background 5G+AI has become the most popular research area for the development of wireless communications. Competition becomes an unprecedented way to promote the integration of 5G and AI by involving academic and industrial R&D to solve typical wireless problems with AI/ML tools. The 5G+AI Work Group of IMT-2020 (5G) Promotion Group is committed to conduct research on the requirements, theories and technologies of deep integration of 5G and AI, and promote the international standardization and industrialization process of 5G and AI integration. Wireless Communication AI Competition (WAIC) is hosted by The 5G+AI Work Group of IMT-2020 (5G) Promotion Group for researchers to contribute on the integration of wireless communications and AI, with the theme of **AI Enlightens Wireless Communication**. A continue influence is expected for the WAIC to attract academic and industry contribution to the integration of 5G and AI. #### Competition Task Name Competition Task Name：**AI-based Channel Estimation** Organizer：vivo Mobile Communication Co., Ltd. #### Competition Task Background Accurate channel estimation (CE) and effective channel state information (CSI) feedback are the basic conditions to ensure the performance of wireless communication system, and will be the core topic of the 2nd Wireless Communication AI Competition. Track “AI-based Channel Estimation” mainly aims at channel estimation problems, and constructs the corresponding competitive theme. In the discussion of 3GPP, demodulation reference signal (DMRS) channel estimation is one of the key points in channel estimation problems. The DMRS is transmitted along with the data signals, using the same transmit precoding of the data signals and suffering from the similar channel fading. The channel information of all resource elements could be estimated by detecting DMRS. Linear algorithms, e.g., Wiener filtering, are mainly used in current DMRS channel estimation. In practical system, these linear algorithms are efficient but not optimal. Employing AI in DMRS channel estimation, the accuracy of channel estimation is expected to be further improved and better system performance could be achieved. #### Competition Task In this competition, we consider to make use of the nonlinear recovery performance of AI, use DMRS on small number of resource elements as the input, to estimate the channel information on all resource elements, which could be used for the signal demodulation of the receiver. Specifically, the characteristics of this competition are as follows: a.Based on the basic requirements of wireless communication, this competition focuses on the channel estimation performance gain of AI model. b.Considering the variety of practical environment, this competition focuses on the generalization performance of AI model in a complex channel environment. #### Competition Schedule The competition will be held online, and technology sharing and awarding will be carried out offline. Contestants should register, team up, and submit the model for evaluation on the official platform DataFountain. After the online competition, the top ten teams or individuals whose submitted models have been reviewed need to participate in the seminar and attend the award ceremony. The schedule is as follows: **June 24, 2021:** The Competition tasks are released, contestants can log on to the official website for registering. **July 5, 2021:** The data is released. Contestants can log in to the official website to download the data set. At the same time, the competition officially enters the evaluation stage. Players can submit the model files online to the competition platform. Each team can submit up to 5 times a day. The evaluation system will automatically evaluate the score. **August 24, 2021 12:00 (Beijing time):** Deadline for registration and team formation. **August 27, 2021 24:00 (Beijing time):** The evaluation platform is closed, and the list is locked. **August 28-September 10, 2021:** After reviewing the models of the top ten teams, the teams will be awarded the first, second, third prize and the winning prize in descending order of the evaluation results. The winning team must participate in the seminar and the award ceremony. Teams that do not participate will abandon the game by default. Note: After receiving the notification from the organizing committee, if the top ten teams fail to submit their materials or abandon the game in time, the organizing committee will notify other teams to submit review materials based on the ranking. **September 29-September 30, 2021[to be confirmed]:** Seminar and award ceremony. Note: if the time is changed due to force majeure or other factors, the organizing committee will notify the winning team as soon as possible. If the winning team is from outside of China, online access is recommended for participating in the seminar and the award ceremony. #### Irregularities If the participating team has the following or other major irregularities, the qualifications and results of the competition can be cancelled after the discussion of competition organizing committee, and the list of winning teams will be postponed sequentially. a. Serious violation of competition rules, b. Cheating by using multiple accounts, colluding, plagiarizing others codes, etc., c. Use of external data without permission, d. Other major violations. #### Bonus |Prize|Amount|Team number| |:--:|:--:|:--:| |Golden prize|300,000 RMB| 1 team| |Silver prize|50,000 RMB (per team)|2 teams| |Bronze prize|20,000 RMB (per team) |3 teams| |Winning prize|10,000 RMB (per team) |4 teams| Note 1 – the award can be settled in US dollars according to the exchange rate on the settlement date. Note 2 – the individual income tax or other forms of tax on the bonus will be borne by the winners, and will be withheld and paid by the organizer of the competition. The participating teams shall be responsible for the distribution and distribution of the bonus among their members, and the organizer will not be held responsible for this. #### Baseline Sharing Activity Sharing your baseline to win gifts! **Time:** July 19-July 25 **Awards:** 1.Contest baseline-sharing e-certificate 2.DataFountain customized summer T-shirt For details of the event, please click [here](https://discussion.datafountain.cn/articles/detail/467) to learn about more and sign up！ #### COMPETITION RULES **Participants**：The competition is open to all the people around the world, regardless of age or nationality. All colleges and universities, scientific research institutions, enterprises, maker teams, individuals, etc. can log on to the official website to register for the competition. Employees of China Academy of Information and Communications Technology, Guangdong OPPO Mobile Telecommunications Corp., Ltd，vivo Mobile Communication Co., Ltd. and affiliated units of above can participate the competition but cannot win prizes, and will not occupy the prize quota (i.e. if the team is in the top 10 of the rank after the rank is locked, the team will not be awarded, nor will it occupy the award quota. The team can participate in offline sharing activities. The winning team will be ranked in sequence except for this team). **Registration requirements**：Each person can only participate in one team (1-5 team member(s) per team) for each track. All team members must provide basic personal information and pass the real-name certification when registering the competition. The team formation mus.t be completed before the deadline. Once the formation of the team is completed, team members cannot quit from the team. **Team up conditions**：In order to ensure that each team has a relatively equal opportunity for submission, the total number of submissions of all members in a team must no be larger than 5 times of the number of days open for evaluation. **Submission of works**： Contestants can submit up to 5 works per day on the competition platform, and the evaluation system will automatically evaluate the score. Entries must guarantee originality, do not violate any relevant laws of the People’s Republic of China, and do not infringe any third-party intellectual property rights or other rights. Once discovered or submitted and verified by the right holder (within 1 month after the publishing of final winner list of the competition), the committee will cancel its competition results and deal with it seriously. **Winning conditions**：The top 10 teams on the list at the end of the online evaluation will be the winning teams. If any team quits the competition (the committee failed to contact any member of the team for three consecutive days according to the contact information provided by the contestants, or the team took the initiative to submit to the committee to quit the competition ), the list of winners will be filled with following teams by sequence. Contestants need to cooperate with the committee to verify the validity and authenticity of the submitted competition works, and at the same time check the correctness of the works by themselves, and submit them after confirming that they are correct. The committee is not responsible for making changes and adjustments to the submitted competition works. **Fair competition**：Participants are not allowed to use rule loopholes or technical loopholes to improve their rankings outside the scope of the designated assessment technical ability, and it is forbidden to copy other people’s works, exchange answers, and use multiple IDs in the competition. The committee will cancel its competition results and deal with it seriously. **Organization statement**：The committee reserves the right to adjust and modify the rules of the competition, the right to determine and dispose of cheating in the competition, and the right to withdraw or refuse the award of the participating team that affects the organization and fairness. **Competition data**：The committee authorizes participants to use the provided data to conduct model training for the designated contest. Participants are not allowed to use the data for any commercial purposes. If it is used for scientific research, please indicate the relevant data provider. **Intellectual property rights of works**：The intellectual property rights of the works (including but not limited to algorithms, models, etc.) belong to the contestants. The committee can use the works, works-related materials, and participating team information for promotional materials and related publications, e.g. designated and authorized media releases, official website browsing and downloads, exhibitions (including touring exhibitions) and other activities, under the consent of the contestants. The organizers of the competition have the priority of cooperation. **Special avoidance**：Personnel involved in track design and data provision in China Academy of Information and Communications Technology, Guangdong OPPO Mobile Telecommunications Corp., Ltd, and vivo Mobile Communication Co., Ltd are prohibited from participating, or entrusting others to participate or guiding the participating team. **Notification and communication**：The committee will invite teams to participate in offline sharing, awards ceremony and other activities through the contact information reserved by the participating teams. If the participating team does not reply within 3 days after the above-mentioned related notice is issued, it will be deemed to have automatically given up the corresponding opportunity, and the organizer has the right to replace other participating teams in order. #### Rights and Responsibilities The committee has the right to judge and dispose of cheating in the competition. The organizing committee reserves the right to modify the submission deadline, defense date and awards date of the competition works. The organizing committee reserves the right to suspend or terminate the competition under special conditions. The organizing committee reserves the right to withdraw or refuse awards to participating teams that affect the organization and fairness of the competition. In case of data update, review code update, cheating check and other reasons, the committee has the right to re-evaluate the results of the competition and update the rankings. The committee reserves the right to adjust and modify the rules of the competition. The organizers of the competition have the final right to interpret the competition. #### Discussion and Sharing using Wechat - Official WeChat Group: 2021-WAIC-AI based Channel Estimation ![image.png](https://s3.cn-north-1.amazonaws.com.cn/files.datafountain.cn/uploads/admin/editor/2021-06-25/image-689636.png) - Official WeChat Account: (Continue to release contest-related information) ![image.png](https://s3.cn-north-1.amazonaws.com.cn/files.datafountain.cn/uploads/admin/editor/2021-06-21/image-879219.png) #### Organization

Host:	IMT-2020(5G) Promotion Group 5G+AI Work Group
Organizer:	China Academy of Information and Communications Technology, Guangdong OPPO Mobile Telecommunications Corp., Ltd vivo Mobile Communication Co., Ltd.
Secretariat:	China Academy of Information and Communications Technology Guangdong OPPO Mobile Telecommunications Corp., Ltd National Mobile Communications Research Laboratory of Southeast University
Platform:	DataFountain

#### Committee **Chairman:**

Zhiqin Wang	Vice President of CAICT, Chair of IMT-2020(5G) Promotion Group
Ning Yang	Head of the OPPO Standard and Research Department
Fei Qin	President of the vivo Communications Research Institute
Shi Jin	Executive Vice President of Graduate School of Southeast University

**Vice Chairman:** Leader and Deputy-Leader organizations of IMT-2020(5G) Promotion Group 5G+AI： Xiaofeng Liu ，Jia Shen ，Liang Liu， Xiaobo Wu. **Committee member:** (List is sorted by the first letter of the name)

Bin Xia	Professor of Shanghai Jiao Tong University
Bo Ai	Professor of Beijing Jiaotong University
Caijun Zhong	Professor of Zhejiang University
Chao Wang	Associate professor of Tongji University
Chungang Yang	Professor of Xidian University
Jie Zeng	Senior Engineer of Tsinghua University
Jing Guo	Special researcher of Beijing Institute of Technology
Li Chen	Associate Professor of University of Science and Technology of China
Lingyang Song	Professor of Peking University
Mugen Peng	Professor of Beijing University of Posts and Telecommunications
Qin Huang	Professor of Beihang University
Tao Yang	Associate Professor of Fudan University
Yong Xiao	Professor of Huazhong University of Science and Technology
Yunjian Jia	Professor of Chongqing University