2020/02/17 by Jehad M. Hamamreh, Hamamreh, Jehad M., Abdulwahab Hajar +3
Engineering · #Advanced Wireless Communication Technologies #PAPR reduction in OFDM #Advanced MIMO Systems Optimization
paper · pdf · doi:10.48550/arxiv.2002.07231
With the emergence of new applications (e.g., extended reality and haptics),\nwhich require to be simultaneously served not just with low latency and\nsufficient reliability, but also with high spectral efficiency, future networks\n(i.e., 6G) should be capable of meeting this demand by introducing new\neffective transmission designs. Motivated by this, a novel modulation technique\ntermed as orthogonal frequency division multiplexing with subcarrier power\nmodulation (OFDM-SPM) is proposed for providing highly spectral-efficient data\ntransmission with low-latency and less-complexity for future 6G wireless\ncommunication systems. OFDM-SPM utilizes the power of subcarriers in OFDM\nblocks as a third dimension to convey extra information bits while reducing\nboth complexity and latency compared to conventional schemes. In this paper,\nthe concept of OFDM-SPM is introduced and its validity as a future adopted\nmodulation technique is investigated over a wireless multipath Rayleigh fading\nchannel. The proposed system structure is explained, an analytical expression\nof the bit error rate (BER) is derived, and numerical simulations of BER and\nthroughput performances of OFDM-SPM are carried out. OFDM-SPM is found to\ngreatly enhance the spectral efficiency where it is capable of doubling it.\nAdditionally, OFDM-SPM introduces negligible complexity to the system, does not\nexhibit error propagation, reduces the transmission delay, and decreases the\ntransmission power by half.\n