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Parallel combinatory OFDM signaling
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DOI：10.1109/26.764929.png)
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摘要
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In this paper, a parallel combinatory-orthogonal frequency division multiplexing (PC-OFDM) system is proposed and analyzed. The proposed system selects at each symbol interval a subset of the available subcarriers, and the selected subcarriers are modulated by points from an M-PSK signal constellation. PC-OFDM systems can be designed to have lower peak-to-average power ratio (PAPR), higher bandwidth efficiency, and lower bit error probability on Gaussian channels compared to ordinary OFDM systems, A bit mapping procedure using the Johnson association, together with a position algorithm for the PSK symbols, is proposed. Good analytical approximations of the BER for PC-OFDM systems are derived for AWGN and Ricean fading channels, and extensive simulation results are presented.
Keyword:
AWGN channel
bandwidth efficiency
bit mapping
M-PSK
multicarrier modulation
OFDM
orthogonal signaling
parallel combinatory signaling
peak-to-average power ratio (PAPR)
Ricean channel
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8.3
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1.2W
被引数:
3.6W
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