Loading...

Ericsson Stockholm | Master Thesis: Performance evaluation of massive MIMO with fronthaul constrains

Posted date: May 4, 2021

Location: Stockholm, AB, SE

Company: Ericsson


Why is Ericsson a good place to work?


Ericsson enables communications service providers to capture the full value of connectivity. The company’s portfolio spans Networks, Digital Services, Managed Services, and Emerging Business and is designed to help our customers go digital, increase efficiency, find new revenue streams, and create new user experiences. Ericsson’s investments in innovation have delivered the benefits of telephony and mobile broadband to billions of people around the world ensuring our solutions – and our customers – are at the forefront of innovation.   We support networks that connect more than 2.5 billion subscribers. With over 100,000 employees and customers in 180 countries, we combine global scale with technology and service leadership.  40 percent of the world’s mobile traffic is carried over an Ericsson network.  And, our Technology for Good and Connect to Learn programs include creating technology that makes it easier to save lives, feed societies, bring technology to emerging markets and connectivity to remote areas, and grow businesses and prosperity.


At Ericsson, we give our employees the freedom to think big and navigate their career, on a global scale.  We create technology that helps others, from helping people enjoy their favourite content to helping people recover from natural disasters by enabling better communications between rescue workers. Your ideas and innovations can turn into achievements that impact society and change the world, creating new connections, new possibilities, and new capabilities.  We find that Ericsson is at its best when we bring together the diverse skills of our people. Working across business areas, across cultures, across geographical borders, across technical disciplines. More often than not, across ground-breaking solutions. Next generation technology can be staggeringly complex. But the simpler it is to use; the more people benefit from it. Join us and help build technology that makes it simple to connect with information, business, societies, and each other.

Proposal of master thesis project at Ericsson Research, Kista - Performance Evaluation of massive MIMO with fronthaul contrains 

 

Description of the unit

This project will be hosted by Ericsson Research in Kista. The hosting group in Ericsson Research is specialized in fronthaul and indoor radio solutions, 5G and beyond radio system architecture and protocols.

 

Thesis description

In centralized radio access network (C-RAN) architecture, the baseband unit (BBU) is connected to the radio unit (RU) via a fronthaul interface. When moving to higher frequency range in 5G, wider bandwidth and higher number of antennas and thereby massive MIMO techniques are taken advantages of, largely boosting capacity of the 5G system. Those great benefits also introduce new challenges to the fronthaul interface since the required fronthaul capacity is driven up quickly. As the fronthaul link relies on wireline deployment which comprises an important portion of TCO, designing fronthaul interface with good scalability towards future RAN evolution is of a great merit.

 

This master thesis project will focus on beamforming algorithms and the related components such as channel estimation, reference signals, etc., conducted or processed at either BBU or RU which have impact to (or are constrained by) the fronthaul interface. In this study, the implementation and evaluation will be done on an in-house link-level simulation platform. Impact of different techniques on the fronthaul interfaces will also be evaluated, considering fronthaul constraints at the network side.

 

You will be required to:

  • Study relevant 3GPP and O-RAN specifications and understand some essential PHY layer components between base-station and user equipment;
  • Implement and integrate functions and algorithms in the in-house link-level simulator;
  • Evaluate impacts of fronthaul interface on the air interface performance;
  • Document the results as a thesis, preferably using LaTeX.

 

Qualification 

We are looking for a student with good experience using MATLAB and solid knowledge in telecommunication. Good understanding of 5G PHY layer and MIMO techniques is a merit. Very good oral and written proficiency in English is a must.

 

Application

Applications should include a brief personal letter, CV, and recent grades (transcripts). Relevant experience is highly valued so please describe accomplished projects and your role in the respect project if there is any one you consider relevant for this position. Candidates are encouraged to send in their application as soon as possible. Suitable applicants will be interviewed as applications are received.

 

Start time: October 2021 - January 2022 

Where: Ericsson Research, Kista, Stockholm

Contact: Yezi Huang, yezi.huang@ericsson.com

Recruiter: Richard Tjong richard.tjong@ericsson.com 

Please upload your Cover letter, CV and grade transcripts with your application

Application Deadline: 23 May

Do you believe that an organization fostering an environment of cooperation and collaboration to execute with speed creates better business value? Do you value a culture of humanness, where fact based decisions are important and our people are encouraged to speak up? Do you believe that diverse, inclusive teams drive performance and innovation? At Ericsson, we do. 

We provide equal employment opportunities without regard to race, color, gender, sexual orientation, transgender status, gender identity and/or expression, marital status, pregnancy, parental status, religion, political opinion, nationality, ethnic background, social origin, social status, indigenous status, disability, age, union membership or employee representation and any other characteristic protected by local law or Ericsson’s Code of Business Ethics.
 

Primary country and city: Sweden (SE) || || Stockholm || [[mfield2]]

Req ID: 541260 


Job Segment: Telecom, Telecommunications, Technology