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http://dx.doi.org/10.5515/KJKIEES.2010.21.7.796

FH DFT-Spreading OFDM System for the Effective Channel Estimation and PAPR Reduction in Jamming Channel  

Kim, Jang-Su (Dept. of Electronic Engineering, Chungbuk National University)
Ryu, Heung-Gyoon (Dept. of Electronic Engineering, Chungbuk National University)
Lee, Seung-Jun (Communication R/D Center, LIG Nex1 Co.)
Ko, Dong-Kuk (Communication R/D Center, LIG Nex1 Co)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.21, no.7, 2010 , pp. 796-804 More about this Journal
Abstract
It is important to use the comb type pilot allocation for the continuous channel and efficient processing. And DFT-spreading OFDM is used a lot to solve high PAPR problem of OFDM system. However, PAPR is increased again when comb type pilot is used to estimate channel characteristics. So, in this paper, we employ a new SLM method to DFT-spreading OFDM system to reduce increased high PAPR. And we suggest an effective method to transmit side information without additional bandwidth. Pilot and side information must be preserved from jamming or intentional interferences since those are very important in DFT spread OFDM system using SLM. So, in this paper, we like to analyze and simulate the performance of DFT spread OFDM system based on SLM against jamming signal. To remedy the vulnerable shortcomings of DFT spread OFDM about jamming or intentional interferences, we employ FH(Frequency Hopping) method and analyze system performance under the several jamming conditions such as MTJ(Multi Tone Jamming) and PBJ(Partial Band Jamming).
Keywords
PAPR; Anti-Jamming; FH; DFT-Spreading; OFDM; Comb Type Pilot;
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