TY - INPR UR - http://dx.doi.org/10.1109/twc.2024.3446658 SP - 1 KW - Bit error rate KW - data rate KW - fluid antenna system KW - index modulation KW - position index modulation TI - Position Index Modulation for Fluid Antenna System N1 - This version is the author accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions. SN - 1536-1276 ID - discovery10196818 AV - public JF - IEEE Transactions on Wireless Communications EP - 1 N2 - Fluid antenna system (FAS) represents all forms of movable and non-movable position-flexible antenna system, and opens up the possibility of a new form of modulation schemes. In this paper, we investigate the design of position index modulation (PIM) for FAS for decreasing the bit error rate (BER) while taking advantage of the rate gain in index modulation. We further derive the BER and data rate expressions to assess the achievable performance of PIM. Simulation results are provided to illustrate the performance and some insights are drawn into the impact of both channel estimation accuracy and transmission power. PB - Institute of Electrical and Electronics Engineers (IEEE) Y1 - 2024/08/27/ A1 - Yang, Halvin A1 - Xu, Hao A1 - Wong, Kai-Kit A1 - Chae, Chan-Byoung A1 - Murch, Ross A1 - Jin, Shi A1 - Zhang, Yangyang ER -