Electromagnetic interference to radar receivers due to OFDM communications systems

Summary form only given. New technology and innovations are giving rise to novel and diverse wireless systems. Unfortunately, as these systems come to fruition worldwide, the already crowded spectrum becomes even more congested due to the high-speed data links offered by systems like WiMAX and LTE. The general focus in spectrum engineering in the last couple of decades has been on reducing radar interference with communication systems. Research has explored design modifications of the radar transmitter and transmitted waveforms to be more spectrally efficient. Techniques such as power amplifier pre-distortion have been explored to minimize out-of-band emissions. However, little insight has been gained on the interoperability between radars and communication systems, specifically mitigating emissions at their receivers other than with simple analog solutions such as filtering. A full complement of solutions and a thorough investigation of the difficulties associated with interoperation must be explored to accommodate problems at both the receiver and the transmitter.