2021/11/06 by Shimaa Naser, Lina Bariah, Naser, Shimaa +9
Engineering · #Advanced Wireless Communication Technologies #FOS: Computer and information sciences #FOS: Electrical engineering #Information Theory (cs.IT) #Optical Wireless Communication Technologies #PAPR reduction in OFDM #Signal Processing (eess.SP) #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2111.03928
openalex publication_date 2021/11/06 · openalex created_date 2022/05/05 · openalex updated_date 2026/07/28
Visible light communication (VLC) has been recognized as a promising\ntechnology for handling the continuously increasing quality of service and\nconnectivity requirements in modern wireless communications, particularly in\nindoor scenarios. In this context, the present work considers the integration\nof two distinct modulation schemes, namely spatial modulation (SM) with space\ntime block codes (STBCs), aiming at improving the overall VLC system\nreliability. Based on this and in order to further enhance the achievable\ntransmission data rate, we integrate quasi-orthogonal STBC (QOSTBC) with SM,\nsince relaxing the orthogonality condition of OSTBC ultimately provides a\nhigher coding rate. Then, we generalize the developed results to any number of\nactive light-emitting diodes (LEDs) and any M-ary pulse amplitude modulation\nsize. Furthermore, we derive a tight and tractable upper bound for the\ncorresponding bit error rate (BER) by considering a simple two-step decoding\nprocedure to detect the indices of the transmitting LEDs and then decode the\nsignal domain symbols. Notably, the obtained results demonstrate that QOSTBC\nwith SM enhances the achievable BER compared to SM with repetition coding\n(RC-SM). Finally, we compare STBC-SM with both multiple active SM (MASM) and\nRC-SM in terms of the achievable BER and overall data rate, which further\njustifies the usefulness of the proposed scheme.\n