Joint State Sensing and Communication Systems With OFDM Transmission

Future wireless applications may require both high-quality wireless communication and sensing. In this letter, we investigate a joint state sensing and communication system with orthogonal frequency division multiplexing (OFDM) transmission. To obtain its capacity-distortion region, we should solve a high dimensional optimization problem. To reduce the computational complexity, it is theoretically proved that the optimization problem is equivalent to that optimizing the magnitude probability distribution of the complex signal inputs. Furthermore, a modified Blahut-Arimoto algorithm is proposed to obtain the capacity-distortion region. The optimal probability distribution of signal inputs is validated through numerical results.