A Hybrid Multi-Domain Index Modulation for Covert Communication
IEEE Wireless Communications Letters(2022)
摘要
In this letter, a hybrid multi-domain index modulation scheme based on spreading codes domain and beam domain is proposed. In our design, the information bit stream is divided into two parts: one for covert transmission using the index of spreading code and the other using the directional modulation to improve bit error ratio (BER) performance in the desired direction and to prevent eavesdropping....
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关键词
Codes,Modulation,Indexes,Phase modulation,Linear antenna arrays,Directive antennas,Phased arrays
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