Studentische Arbeiten

Titel: On the Peak to Average Power Ratio of Universal Filtered Multicarrier
Typ:
  • Forschungsarbeit
Betreuer:
Status: abgeschlossen

Hintergrund

With the fast growing amount of devices which are to be connected to the Internet, future 5G wireless communication systems have to be able to support a very diverse type of traffics. In the road towards 5G, radical changes of various technologies are required to meet the increasing demand of data rate, capacity, latency and etc. Starting from the fundamental aspect of physical layer, the institute is looking into potential alternative waveform technologies to OFDM. One of 5G waveform candidates is  universal filtered multicarrier (UFMC). It can be seen as a generalization of filter-bank multicarrier (FBMC) and OFDM. Based on filtering a group of subcarriers, it combines the advantages of FBMC and OFDM, while avoiding its main drawbacks.

Problemstellung

OFDM is today's prominent modulation scheme, it is applied in various standards such as WLAN and LTE. However, it may not suit all requirements of the expected heterogeneous traffics in 5G. OFDM has two main drawbacks, i.e., bad frequency localization and high Peak to Average Power Ratio (PAPR). Recently, a novel multicarrier modulation scheme, UFMC, was proposed to enhance the performance of OFDM.

UFMC applies per sub-band FIR-filtering, thus it can be well-localized in frequency (more robust against frequency dispersion). For a better spectral efficiency, no guard band is inserted between successive symbols, thus more sensitive to time dispersion. The aim of this work is to analyze and compare the PAPR of UFMC to conventional OFDM. Furthermore, PAPR reduction methods shall be investigated for this novel multicarrier technique.

Aufgabe

The tasks of this thesis involve:

  • analysis of PAPR for UFMC
  • implement some basic PAPR reduction methods
  • compare PAPR of UFMC and OFDM, applying PAPR reduction methods
  • Simulation in Matlab

 

This thesis can be accomplished in German or English.

Anforderung

 

  • Knowledge of signal processing, OFDM

 

Kenntnisgewinn

  1. Digital Signal Processing
  2. Multicarrier modulation (UFMC,OFDM)