Research Article
An Improved OFDM-MSK System for Wireless Communications
@INPROCEEDINGS{10.1109/CHINACOM.2009.5339923, author={Weiwen Weng and Yuan'an Liu and Hefei Hu and Dongming Yuan}, title={An Improved OFDM-MSK System for Wireless Communications}, proceedings={ChinaCom2009-Wireless Communications and Networking Symposium}, publisher={IEEE}, proceedings_a={CHINACOM2009-WCN}, year={2009}, month={11}, keywords={MSK; Continuous Phase modulation(CPM); CFO; inter-carrier interference(ICI); MLSD; Viterbi Algorithm(VA); OFDM-MSK}, doi={10.1109/CHINACOM.2009.5339923} }- Weiwen Weng
Yuan'an Liu
Hefei Hu
Dongming Yuan
Year: 2009
An Improved OFDM-MSK System for Wireless Communications
CHINACOM2009-WCN
IEEE
DOI: 10.1109/CHINACOM.2009.5339923
Abstract
As a well attractive modulation scheme, Minimum-shift Keying (MSK) has a fast roll-off side-lobe spectrum. Because of this excellent property, we introduce MSK into the conventional OFDM to form an improved OFDM-MSK system. The new system can effectively overcome the carrier frequency offset (CFO), mitigate the interference among the sub-carriers. And two kinds of OFDM-MSK receiver are discussed in detail. At the same time, two FFT-based sampling modes (Mode A and Mode B) are also proposed and analyzed. And a practical OFDM-MSK structure design is given. Simulation results show that when SNR is high, the BER performance of OFDM-MSK systems outperforms that of OFDM-QPSK systems over AWGN and Rayleigh wireless fading channels. Keywords-
