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- Title
可见光CAP-OFDM 传输方案.
- Authors
刘莹; 王旭东; 吴楠; 崔玉
- Abstract
In view of the design of indoor high-speed visible light link, an Orthogonal Frequency Division Multiplexing( OFDM) transmission scheme based on Carrierless Amplitude Phase ( CAP) modulation (CAP-OFDM) with high spectrum efficiency is proposed. In this scheme, a pair of orthogonal filters are used to generate the baseband real signal, the signal is then loaded into a orthogonal carrier in the frequency domain by Hartley transform and polarized by adding a DC bias. Based on the Lambert radiation model, the analytical formulas of the symbol error rate(SER) and bandwidth utilization for the CAP-OFDM and the PAM-OFDM, QAM-OFDM transmission schemes proposed in the existing literatures are deduced. The correctness of the theoretical derivation is verified through simulation experiments. The simulation results show that when the modulation order is fixed, the SER performance of CAP-OFDM and QAM-OFDM is the same and better than that of PAM-OFDM. When the bandwidth utilization is fixed, CAP-OFDM has the best SER performance and QAM-OFDM has the worst SER performance.
- Publication
Telecommunication Engineering, 2018, Vol 58, Issue 10, p1189
- ISSN
1001-893X
- Publication type
Article
- DOI
10.3969/j.issn.1001-893x.2018.10.013