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http://dx.doi.org/10.7840/kics.2016.41.12.1715

Comparison of Time and Frequency Resources of DFT-s-OFDM Systems Using the Zero-Tail and Unique Word  

Kim, Byeongjae (Department of Electronic Engineering, Chungbuk National University)
Ryu, Heung-Gyoon (Department of Electronic Engineering, Chungbuk National University)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.41, no.12, 2016 , pp. 1715-1720 More about this Journal
Abstract
In the upcoming 5-generation mobile communication system, various techniques for improving the power efficiency and spectral efficiency have been proposed. 5G mobile communication system also have been studied a lot of multi-carrier-based modulation techniques like the 4G mobile communication system. In this paper, we analyzed the conventional system structure of the Zero-tail DFT-s-OFDM and UW (Unique Word) -DFT-s-OFDM system based on DFT-s-OFDM system in these techniques. UW and zero are added and used each system, and CP is removed. the result of quality of systems for simulation, OOB(Out of Band) power of Zero-tail DFT-s-OFDM and UW-DFT-s-OFDM use the less time resource as long as CP length, also both systems are reduced about 11dB than DFT-s-OFDM system. In these result, Zero-tail DFT-s-OFDM and UW-DFT-s-OFDM system are more effective than DFT-s-OFDM system.
Keywords
DFT-s-OFDM; Zero-tail DFT-s-OFDM; UW-DFT-s-OFDM; DFT-spreading; OOB;
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