In this letter, we propose layered asymmetrically clipped optical-orthogonal frequency-division multiplexing (LACO-OFDM) with index modulation (IM), i.e., LACO-OFDM-IM for optical wireless systems. classical LACO-OFDM, the spectral leakage because of out-of-band clipping harmonics increases baseband bandwidth (BB) resulting in lower efficiencies. For LACO-OFDM-IM, use IM and optimize BB by filt...

In this letter, a hybrid multi-domain index modulation scheme based on spreading codes domain and beam is proposed. our design, the information bit stream divided into two parts: one for covert transmission using of code other directional to improve error ratio (BER) performance in desired direction prevent eavesdropping. Then, joint boundaries statistical theory, average probabilities legitima...

Orthogonal frequency division multiplexing with index modulation (OFDM-IM), stands out among conventional communication technologies, as it uses the indices of available transmit entities. Thanks to such an approach, offers a novel method for transmission extra data bits. Recent years have seen great interest in chaos-based communications. The spectrum-spreading signals used chaotic signal tech...

Single-source binary hybrid multilevel inverters with cascaded transformers have a bulky transformer connected to their main H-bridge cells in each phase. This bulky transformer has been eliminated in this work without any effect on operation and modulation strategies. The proposed topology has significant advantages from view point of dimensions and number of transformers, design of transforme...