Index Modulation of OAM-UCA with LDPC Transmission

The Orbital Angular Momentum (OAM) is utilized as a new dimension to improve wireless communication spectral efficiency. combination of OAM and Multi-Input Multi-Output (MIMO) with Uniform Circular Array (UCA) scheme is expected to be easily applied in the existing communication network. Similarly, the Index Modulation (IM) utilizes the indices of the building blocks of the corresponding communication systems in the Low Density Parity Code (LDPC) to improve error performance and transmit addition information bits. In this paper, we propose the index modulation of OAM-UCA with LDPC transmission technology. Combining LDPC with OAM-UCA index modulation, the simulation results show that when the index number of OAM mode is 5, LDPC coding can bring the gain of 4 dB when the Bit Error Rate (BER) is 10
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• In addition, the combination of OAM-UCA and index modulation with LDPC scheme is expected to be applied in 6G.