A Multiple Sequences Spread-Spectrum System with In-phase/Quadrature Index Modulation for Underwater Acoustic Communications
2021 15th International Symposium on Medical Information and Communication Technology (ISMICT)(2021)
摘要
In the multiple sequences spread system (MSSS), multiple modulated spreading sequences by a groups of symbols are superimposed at the transmitter. In this paper, we propose a new multiple sequences spread-spectrum system with in-phase/quadrature index modulation (MSSS-I/Q-IM), which can achieve higher spectrum efficiency by using code index modulation to carry two groups of additional bits. In the...
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关键词
Multiple sequences spread spectrum,index modulation,bit error rate
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