Title :
Analysis and design of SLM based DFT spreading OFDM system for active anti-jamming system
Author :
Kim, Jangsu ; An, Dong Geon ; Ryu, Heung-Gyoon ; Kim, Jin-up
Author_Institution :
Dept. of Electron. Eng., Chungbuk Nat. Univ., Cheongju, South Korea
Abstract :
DFT (discrete Fourier transform) spread OFDM is used a lot to solve high PAPR problem of OFDM (orthogonal frequency division multiplexing) system. However, PAPR is increased again in DFT spreading OFDM system when comb type of pilot is exploited to estimate channel characteristics effectively. So, in this paper, we apply a SLM (selective mapping) method to DFT spreading OFDM system to reduce increased PAPR characteristics. And we suggest an effective method to transmit side information without additional bandwidth. Also, we propose an adaptive sub-carrier allocation method to improve system performance against interference or jamming. We would like to analyze proposed SLM based DFT spreading OFDM system using adaptive sub-carrier allocation method. And we compare and analyze system performance through simulation under multi-tone jamming (MTJ) and partial band jamming (PBJ) environments.
Keywords :
OFDM modulation; discrete Fourier transforms; jamming; SLM based DFT spreading OFDM system; active antijamming system; adaptive subcarrier allocation method; discrete Fourier transform; multitone jamming; orthogonal frequency division multiplexing system; partial band jamming environments; selective mapping method; side information; Adaptive systems; Bit error rate; Discrete Fourier transforms; Jamming; Peak to average power ratio; Resource management; Anti-jamming; DFT spreading OFDM; MTJ; PBJ; SLM;
Conference_Titel :
Radio and Wireless Symposium (RWS), 2011 IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
978-1-4244-7687-9
DOI :
10.1109/RWS.2011.5725411
