Ericsson Research develops new communication solutions and standards. The organization has responsibility to provide Ericsson with world-class system concepts, technology innovations, and methodologies. The rapidly increasing demands for mobile broadband access in combination with needs for new technology and solutions for the digitalization of industries and societies creates challenging and exciting opportunities for our organization. Building on our experience from real network operations, profound knowledge about existing standards, and forward-looking research, we invent and master advanced concepts and solutions that shape today’s and tomorrow’s mobile radio communication.
One trend in the telecommunication world is the use of higher and higher spectrum to get more bandwidth catering for the massive growth of mobile data consumption. With the advent of 5G, frequencies around 30 GHz are now considered at a first stage and 50 GHz and above may be used later on. Since the propagation loss, i.e. the so-called coverage, is a function of the frequency, it is more and more challenging to achieve coverage when moving up in the frequency range.
A way to improve coverage is to employ advanced antenna solutions such as beam forming. In short, this is where we utilize many antennas and control the direction of the signal power directly at the receiver and thereby increase the received power. However, this is costly and a bit harder to do in the uplink since the terminal is usually simpler and less advanced than the base station.
The objective of this master thesis is to evolve scheduling mechanisms and evaluate performance for a concept called “cooperative devices”, that increases coverage by combining signals from adjacent devices. The concept utilizes the fact that there are nowadays techniques to transmit data between one or more devices, without going over the detour via the base station. Thus, if one user wants to transmit data, it can first send its data to cooperative devices in the vicinity, and as a second step the cooperative devices send the data simultaneously to the base station. This require new ways to schedule the users and setup of a group of devices. The goal of the master thesis is to evaluate the performance for different scenarios, both by an analytical approach and by simulations implementing multi-hop and cooperative transmission between adjacent devices.
The thesis will be concluded with a result presentation for the Ericsson Research team
- You should be an MSc student, preferably in engineering physics, electrical engineering, computer science or similar
- Courses in wireless communication theory and signal processing as well as experiences of communication systems and internet protocols are considered valuable merits
- Strong analytical and programming skills are beneficial
- The work is research oriented, so ability to learn quickly, work independently and identify problems and solutions is necessary.
- Existing Matlab based system simulator will be modified and used for tests and evaluations, which means that the thesis work requires good Matlab programming skills
- Experience from other programming languages is a merit.
Extent: 1 student, 30hp
Work location: Luleå
Prefered Starting Date: Q1 2020, please enclose a transcript in your application and state when you can start.
Last Day to Apply: 24th of November
Contact: Mats Nordberg, +46703008001, firstname.lastname@example.org or Agnes Westerberg, email@example.com
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Primary country and city: Sweden (SE) || || Luleå || Stud&YP
Req ID: 304457